LMC567 [TI]

Low-Power Tone Decoder;
LMC567
型号: LMC567
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

Low-Power Tone Decoder

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LMC567  
SNOSBY1C JUNE 1999REVISED DECEMBER 2015  
LMC567 Low-Power Tone Decoder  
1 Features  
3 Description  
The LMC567 device is a low-power, general-purpose  
LMCMOS tone decoder which is functionally similar  
to the industry standard LM567. The device consists  
of a twice frequency voltage-controlled oscillator  
(VCO) and quadrature dividers which establish the  
reference signals for phase and amplitude detectors.  
1
Functionally Similar to LM567  
2-V to 9-V Supply Voltage Range  
Low Supply Current Drain  
No Increase in Current With Output Activated  
Operates to 500-kHz Input Frequency  
High Oscillator Stability  
The phase detector and VCO form a phase-locked  
loop (PLL) which locks to an input signal frequency  
which is within the control range of the VCO. When  
the PLL is locked and the input signal amplitude  
exceeds an internally pre-set threshold, a switch to  
ground is activated on the output pin. External  
components set up the oscillator to run at twice the  
input frequency and determine the phase and  
amplitude filter time constants.  
Ground-Referenced Input  
Hysteresis Added to Amplitude Comparator  
Out-of-Band Signals and Noise Rejected  
20-mA Output Current Capability  
2 Applications  
Touch-Tone Decoding  
(1)  
Device Information  
Precision Oscillators  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
Frequency Monitoring and Control  
Wide-Band FSK Demodulation  
Ultrasonic Controls  
LMC567  
SOIC (8)  
4.90 mm × 3.91 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Carrier Current Remote Controls  
Communications Paging Decoders  
Simplified Diagram  
1
2
3
4
8
7
6
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1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
LMC567  
SNOSBY1C JUNE 1999REVISED DECEMBER 2015  
www.ti.com  
Table of Contents  
9.3 Feature Description................................................... 8  
9.4 Device Functional Modes.......................................... 9  
10 Application and Implementation........................ 10  
10.1 Application Information.......................................... 10  
10.2 Typical Application ............................................... 10  
11 Power Supply Recommendations ..................... 12  
12 Layout................................................................... 12  
12.1 Layout Guidelines ................................................. 12  
12.2 Layout Example ................................................... 12  
13 Device and Documentation Support ................. 13  
13.1 Device Support .................................................... 13  
13.2 Community Resources.......................................... 13  
13.3 Trademarks........................................................... 13  
13.4 Electrostatic Discharge Caution............................ 13  
13.5 Glossary................................................................ 13  
1
2
3
4
5
6
7
Features.................................................................. 1  
Applications ........................................................... 1  
Description ............................................................. 1  
Revision History..................................................... 2  
Device Comparison Table..................................... 3  
Pin Configuration and Functions......................... 3  
Specifications......................................................... 4  
7.1 Absolute Maximum Ratings ...................................... 4  
7.2 Recommended Operating Conditions....................... 4  
7.3 Thermal Information.................................................. 4  
7.4 Electrical Characteristics........................................... 4  
7.5 Typical Characteristics.............................................. 6  
Parameter Measurement Information .................. 7  
8.1 Test Circuit................................................................ 7  
Detailed Description .............................................. 8  
9.1 Overview ................................................................... 8  
9.2 Functional Block Diagram ......................................... 8  
8
9
14 Mechanical, Packaging, and Orderable  
Information ........................................................... 13  
4 Revision History  
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.  
Changes from Revision B (April 2013) to Revision C  
Page  
Added ESD Ratings table, Feature Description section, Device Functional Modes section, Application and  
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation  
Support section, and Mechanical, Packaging, and Orderable Information section................................................................ 1  
Changes from Revision A (April 2013) to Revision B  
Page  
Changed layout of National Data Sheet to TI format ............................................................................................................. 9  
2
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5 Device Comparison Table  
DEVICE NUMBER  
DESCRIPTION  
LMC567  
Low power tone decoder  
General-purpose tone decoder with half oscillator frequency than  
LMC567  
LM567, LM567C  
6 Pin Configuration and Functions  
D Package  
8-Pin SOIC  
Top View  
1
2
3
4
8
7
6
5
Pin Functions  
PIN  
TYPE(1)  
DESCRIPTION  
NAME  
GND  
NO.  
7
PWR  
Ground connection  
Device input  
IN  
3
I
LF_CAP  
OF_CAP  
OUT  
2
I
Loop filter capacitor terminal  
Output filter capacitor terminal  
Device output  
1
I
8
O
T_CAP  
T_RES  
VCC  
5
I
I
Timing capacitor connection terminal  
Timing resistor connection terminal  
Voltage supply connection  
6
4
PWR  
(1) I = input, O = output, PWR = power  
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SNOSBY1C JUNE 1999REVISED DECEMBER 2015  
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7 Specifications  
7.1 Absolute Maximum Ratings  
over operating free-air temperature range (unless otherwise noted)(1)(2)  
MIN  
MAX  
UNIT  
Vp–p  
V
Input voltage  
IN  
2
Supply voltage  
VCC  
OUT  
OUT  
10  
13  
Output voltage  
V
Output current  
30  
mA  
mW  
°C  
Package dissipation  
Operating temperature, TA  
Storage temperature, Tstg  
500  
125  
150  
–25  
–55  
°C  
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings  
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended  
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and  
specifications.  
7.2 Recommended Operating Conditions  
over operating free-air temperature range (unless otherwise noted)  
MIN  
2
MAX  
9
UNIT  
V
VCC  
FIN  
TA  
Supply voltage  
Input frequency  
1
500  
125  
Hz  
°C  
Operating temperature  
–25  
7.3 Thermal Information  
LMC567  
THERMAL METRIC(1)  
D (SOIC)  
8 PINS  
111.8  
59.2  
UNIT  
RθJA  
RθJC(top)  
RθJB  
ψJT  
Junction-to-ambient thermal resistance  
Junction-to-case (top) thermal resistance  
°C/W  
°C/W  
°C/W  
°C/W  
°C/W  
Junction-to-board thermal resistance  
52.2  
Junction-to-top characterization parameter  
Junction-to-board characterization parameter  
13.5  
ψJB  
51.7  
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application  
report, SPRA953.  
7.4 Electrical Characteristics  
Test Circuit, TA = 25°C, Vs = 5 V, RtCt #2, Sw. 1 Pos. 0, and no input, unless otherwise noted.  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
0.3  
0.5  
0.8  
0
MAX UNIT  
Vs = 2 V  
Vs = 5 V  
Vs = 9 V  
RtCt #1, quiescent  
or activated  
I4  
Power supply current  
0.8 mAdc  
1.3  
V3  
R3  
I8  
Input D.C. bias  
Input resistance  
Output leakage  
mVdc  
40  
kΩ  
1
100 nAdc  
Vs = 2 V  
Vs = 5 V  
Vs = V  
98  
Center frequency,  
Fosc ÷ 2  
RtCt #2, measure oscillator  
Frequency and divide by 2  
f0  
92  
103  
105  
113  
2
kHz  
%/V  
f0|9 V - f0|2 V  
ì100  
Center frequency  
shift with supply  
Δf0  
1
7 f0|5 V  
(1)  
4
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Electrical Characteristics (continued)  
Test Circuit, TA = 25°C, Vs = 5 V, RtCt #2, Sw. 1 Pos. 0, and no input, unless otherwise noted.  
PARAMETER  
TEST CONDITIONS  
MIN  
11  
TYP  
20  
MAX UNIT  
27  
Vs = 2 V  
Vs = 5 V  
Vs = 9 V  
Set input frequency equal to f0 measured  
above. Increase input level until pin 8 goes  
low.  
Vin  
Input threshold  
17  
30  
45 mVrms  
45  
Starting at input threshold, decrease input  
level until pin 8 goes high.  
ΔVin  
Input hysteresis  
1.5  
mVrms  
I8 = 2 mA  
I8 = 20 mA  
Vs = 2 V  
0.06  
0.7  
0.15  
Vdc  
Input level > threshold  
Choose RL for specified I8.  
V8  
Output sat voltage  
Measure Fosc with Sw. 1 in  
Pos. 0, 1, and 2;  
7%  
11%  
14%  
15%  
17%  
Largest detection  
bandwidth  
Vs = 5 V  
11%  
L.D.B.W.  
FOSC P2  
|
-F  
OSC P1 ì100  
FOSC P0  
|
L.D.B.W =  
Vs = 9 V  
15%  
|
(2)  
FOSC P2 -FOSC|P1  
|
ΔBW  
Bandwidth skew  
0%  
±1.0%  
Skew =  
-1 ì100  
«
÷
2 FOSC P0  
|
(3)  
Highest center  
frequency  
RtCt #3  
Measure oscillator frequency and divide by 2.  
fmax  
Vin  
700  
35  
kHz  
Set input frequency equal to fmax measured above. Increase  
input level until pin 8 goes low.  
Input threshold at fmax  
mVrms  
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7.5 Typical Characteristics  
Figure 1. Supply Current vs Operating Frequency  
Figure 3. Largest Detection Bandwidth vs Temperature  
Figure 5. Frequency Drift With Temperature  
Figure 2. Bandwidth vs Input Signal Level  
Figure 4. Bandwidth as a Function of C2  
Figure 6. Frequency Drift With Temperature  
6
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8 Parameter Measurement Information  
All parameters are measured according to the conditions described in Specifications.  
8.1 Test Circuit  
Figure 7 was used to make the measurements of the typical characteristics of the LMC567.  
Figure 7. LMC567 Test Circuit  
Table 1. Rt and Ct Values for the Test Circuit  
RtCt  
#1  
Rt  
Ct  
100k  
10k  
300 pF  
300 pF  
62 pF  
#2  
#3  
5.1k  
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SNOSBY1C JUNE 1999REVISED DECEMBER 2015  
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9 Detailed Description  
9.1 Overview  
The LMC567C is a low-power, general-purpose tone decoder with similar functionality to the industry standard  
LM567. The device requires external components set up the internal oscillator to run at twice the input frequency  
and determine the required filter constants. Internal VCO and Phase detector form a Phase-locked loop which  
locks to an input signal frequency that is established by external timing components. When PLL is locked, a  
switch to ground is activated in the output of the device.  
9.2 Functional Block Diagram  
1
2
3
4
8
7
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9.3 Feature Description  
9.3.1 Oscillator  
The voltage-controlled oscillator (VCO) on the LMC567 must be set up to run at twice the frequency of the input  
signal tone to be decoded. The center frequency of the VCO is set by timing resistor Rt and timing capacitor Ct  
connected to pins 5 and 6 of the IC. The center frequency as a function of Rt and Ct is given by Equation 4:  
1
FOSC  
@
Hz  
1.4 RtCt  
(4)  
Because this causes an input tone of half Fosc to be decoded by Equation 5,  
1
F
@
Hz  
INPUT  
2.8 RtCt  
(5)  
Equation 5 is accurate at low frequencies; however, above 50 kHz (Fosc = 100 kHz), internal delays cause the  
actual frequency to be lower than predicted.  
The choice of Rt and Ct is a tradeoff between supply current and practical capacitor values. An additional supply  
current component is introduced in Equation 6 due to Rt being switched to Vs every half cycle to charge Ct:  
Is due to Rt = Vs/(4Rt)  
(6)  
Thus the supply current can be minimized by keeping Rt as large as possible (see Figure 1). However, the  
desired frequency dictates an RtCt product such that increasing Rt requires a smaller Ct. Below  
Ct = 100 pF, circuit board stray capacitances begin to play a role in determining the oscillation frequency which  
ultimately limits the minimum Ct.  
To allow for IC and component value tolerances, the oscillator timing components requires a trim. This is  
generally accomplished by using a variable resistor as part of Rt, although Ct could also be padded. The amount  
of initial frequency variation due to the LMC567 itself is given in the Electrical Characteristics; the total trim range  
must also accommodate the tolerances of Rt and Ct.  
8
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Feature Description (continued)  
9.3.2 Input  
The input pin 3 is internally ground-referenced with a nominal 40-kΩ resistor. Signals which are already centered  
on 0 V may be directly coupled to pin 3; however, any DC potential must be isolated through a coupling  
capacitor. Inputs of multiple LMC567 devices can be paralleled without individual DC isolation.  
9.3.3 Loop Filter  
Pin 2 is the combined output of the phase detector and control input of the VCO for the phase-locked loop (PLL).  
Capacitor C2 in conjunction with the nominal 80-kΩ pin 2 internal resistance forms the loop filter.  
For small values of C2, the PLL has a fast acquisition time and the pull-in range is set by the built in VCO  
frequency stops, which also determines the largest detection bandwidth (LDBW). Increasing C2 results in  
improved noise immunity at the expense of acquisition time, and the pull-in range begins to become narrower  
than the LDBW (see Figure 4). However, the maximum hold-in range always equal the LDBW.  
9.3.4 Output Filter  
Pin 1 is the output of a negative-going amplitude detector which has a nominal 0 signal output of 7/9 Vs. When  
the PLL is locked to the input, an increase in signal level causes the detector output to move negative. When pin  
1 reaches 2/3 Vs, the output is activated (see Output).  
Capacitor C1 in conjunction with the nominal 40-kΩ pin 1 internal resistance forms the output filter. The size of  
C1 is a tradeoff between slew rate and carrier ripple at the output comparator. Low values of C1 produce the  
least delay between the input and output for tone burst applications, while larger values of C1 improve noise  
immunity.  
Pin 1 also provides a means for shifting the input threshold higher or lower by connecting an external resistor to  
supply or ground. However, reducing the threshold using this technique increases sensitivity to pin 1 carrier  
ripple and also results in more part to part threshold variation.  
9.3.5 Output  
The output at pin 8 is an N-channel FET switch to ground which is activated when the PLL is locked and the  
input tone is of sufficient amplitude to cause pin 1 to fall below 2/3 Vs. Apart from the obvious current component  
due to the external pin 8 load resistor, no additional supply current is required to activate the switch. The ON-  
resistance of the switch is inversely proportional to supply; thus the sat voltage for a given output current  
increases at lower supplies.  
9.4 Device Functional Modes  
9.4.1 Operation as LM567  
The LMC567 low power tone decoder can be operated at supply voltages of 2 V to 9 V and at input frequencies  
ranging from 1 Hz up to 500 kHz.  
The LMC567 can be directly substituted in most LM567 applications with the following provisions:  
1. Oscillator timing capacitor Ct must be halved to double the oscillator frequency relative to the input frequency  
(see Oscillator).  
2. Filter capacitors C1 and C2 must be reduced by a factor of 8 to maintain the same filter time constants.  
3. The output current demanded of pin 8 must be limited to the specified capability of the LMC567.  
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SNOSBY1C JUNE 1999REVISED DECEMBER 2015  
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10 Application and Implementation  
NOTE  
Information in the following applications sections is not part of the TI component  
specification, and TI does not warrant its accuracy or completeness. TI’s customers are  
responsible for determining suitability of components for their purposes. Customers should  
validate and test their design implementation to confirm system functionality.  
10.1 Application Information  
These typical connection diagrams highlight the required external components and system level connections for  
proper operation of the device in several popular use cases.  
Any design variation can be supported by TI through schematic and layout reviews. Visit support.ti.com for  
additional design assistance. Also, join the audio amplifier discussion forum at e2e.ti.com.  
10.2 Typical Application  
Figure 8. LMC567 Application Schematic  
10.2.1 Design Requirements  
For this design example, use the parameters listed in Table 2.  
Table 2. Design Parameters  
DESIGN PARAMETER  
Supply voltage  
EXAMPLE VALUE  
2 V to 9 V  
Input voltage  
20 mVRMS to (VCC + 0.5)  
1 Hz to 500 KHz  
30 mA  
Input frequency  
Output current maximum  
10  
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10.2.2 Detailed Design Procedure  
10.2.2.1 Timing Components  
As VCO frequency (FOSC) runs at twice the frequency of the input tone, the desired input detection frequency can  
be defined by Equation 7:  
F
= 2 FOSC  
INPUT  
(7)  
The central frequency of the oscillator is set by timing capacitor and resistor. The timing capacitor value (CT)  
must be set in order to calculate the timing resistor value (RT). This is given by Equation 8:  
1
RT  
ö
1.4 FOSCCT  
(8)  
So, in order to found the required component values to set the detection frequency Equation 9:  
1
RT  
ö
2.8 FINPUTCT  
(9)  
This approximation is valid with lower frequencies; considerations must be taken when using higher frequencies.  
More information on this can be found in Oscillator.  
10.2.2.2 Bandwidth  
Detection bandwidth is represented as a percentage of FOSC. It can be approximated as a function of FOSC × C2  
following the behavior indicated in Figure 4. More information on this can be found in Loop Filter.  
10.2.2.3 Output Filter  
The size of the output filter capacitor C1 is a tradeoff between slew rate and carrier ripple. More information on  
this can be found in Output Filter.  
10.2.2.4 Supply Decoupling  
The decoupling of supply pin 4 becomes more critical at high supply voltages with high operating frequencies,  
requiring C4 to be placed as close as possible to pin 4.  
10.2.3 Application Curve  
SPACE  
IN (PIN 3)  
OUT (PIN 8)  
Figure 9. Frequency Detection  
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11 Power Supply Recommendations  
The LMC567 is designed to operate with an input power supply range between 2 V and 9 V. Therefore, the  
output voltage range of power supply must be within this range and well regulated. The current capability of  
upper power must not exceed the maximum current limit of the power switch. Because the operating frequency  
of the device could be very high for some applications, the decoupling of power supply becomes critical, so is  
required to place a proper decoupling capacitor as close as possible to VCC pin. Low equivalent-series-  
resistance (ESR) ceramic capacitor, typically 0.1 µF, is typically used. This capacitor must be placed within 2 mm  
of the supply pin.  
12 Layout  
12.1 Layout Guidelines  
The VCC pin of the LM567 must be decoupled to ground plane as the device can work with high switching  
speeds. The decoupling capacitor must be placed as close as possible to the device. Traces length for the timing  
and external filter components must be kept at minimum in order to avoid any possible interference from other  
close traces.  
12.2 Layout Example  
{ꢀort traces to external  
components  
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1
1
2
3
4
8
7
6
5
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2
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Lb  
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Figure 10. LMC567 Board Layout  
12  
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13 Device and Documentation Support  
13.1 Device Support  
13.1.1 Development Support  
For development support, see the following:  
support.ti.com  
13.2 Community Resources  
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective  
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of  
Use.  
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration  
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help  
solve problems with fellow engineers.  
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and  
contact information for technical support.  
13.3 Trademarks  
E2E is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
13.4 Electrostatic Discharge Caution  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
13.5 Glossary  
SLYZ022 TI Glossary.  
This glossary lists and explains terms, acronyms, and definitions.  
14 Mechanical, Packaging, and Orderable Information  
The following pages include mechanical, packaging, and orderable information. This information is the most  
current data available for the designated devices. This data is subject to change without notice and revision of  
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.  
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PACKAGE OPTION ADDENDUM  
www.ti.com  
27-Oct-2016  
PACKAGING INFORMATION  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan  
Lead/Ball Finish  
MSL Peak Temp  
Op Temp (°C)  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(6)  
(3)  
(4/5)  
LMC567CMX/NOPB  
ACTIVE  
SOIC  
D
8
2500  
Green (RoHS  
& no Sb/Br)  
CU SN  
Level-1-260C-UNLIM  
-25 to 100  
LMC  
567CM  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability  
information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that  
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between  
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight  
in homogeneous material)  
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation  
of the previous line and the two combined represent the entire Device Marking for that device.  
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish  
value exceeds the maximum column width.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
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In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
27-Oct-2016  
Addendum-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
4-May-2017  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
LMC567CMX/NOPB  
SOIC  
D
8
2500  
330.0  
12.4  
6.5  
5.4  
2.0  
8.0  
12.0  
Q1  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
4-May-2017  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SOIC  
SPQ  
Length (mm) Width (mm) Height (mm)  
367.0 367.0 35.0  
LMC567CMX/NOPB  
D
8
2500  
Pack Materials-Page 2  
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