TS5A4595_14 [TI]
8-R SPST ANALOG SWITCH 5-V/3.3V SINGLE- CHANNEL ANALOG SWITCH;
| 型号： | TS5A4595_14 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 8-R SPST ANALOG SWITCH 5-V/3.3V SINGLE- CHANNEL ANALOG SWITCH |
| 文件： | 总13页 (文件大小：147K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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SCDS180 − FEBRUARY 2005
Description
Features
D
D
D
D
D
D
D
D
D
Low ON-State Resistance (8 W)
ON-State Resistance Flatness (1.5 W)
Control Inputs Are 5.5-V Tolerant
Low Charge Injection (5 pC Max)
450-MHz −3-dB Bandwidth at 255C
Low Total Harmonic Distortion (THD) (0.04%)
2-V to 5.5-V Single-Supply Operation
−82-dB OFF-Isolation at 1 MHz
The TS5A4595 is a single-pole single-throw (SPST)
analog switch that is designed to operate from 2 V to
5.5 V. This device can handle both digital and analog
signals, and signals up to V can be transmitted in either
+
direction.
Applications
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D
D
Sample-and-Hold Circuit
D
0.5-nA Max OFF Leakage
Battery-Powered Equipment
(Cellular Phones, PDAs)
D
ESD Performance Tested Per JESD 22
− 2000-V Human-Body Model
(A114-B, Class II)
D
D
D
Audio and Video Signal Routing
Communication Circuits
PCMCIA Cards
− 1000-V Charged-Device Model (C101)
D
TTL/CMOS-Logic Compatible
Summary of Characteristics
V = 5 V, T = 25°C
+
A
Single Pole
Single Throw
(SPST)
SOT-23 OR SC-70 PACKAGE
(TOP VIEW)
Configuration
COM
NC
1
5
4
V
Number of channels
1
8 Ω
+
ON-state resistance (r
)
on
2
3
ON-state resistance flatness (r
)
1.5 Ω
GND
IN
on(flat)
Turn-on/turn-off time (t /t
)
17 ns/14 ns
5 pC
ON OFF
Charge injection (Q )
C
Bandwidth (BW)
450 MHz
−82 dB at 1 MHz
0.04%
OFF isolation (O
ISO
)
FUNCTION TABLE
Total harmonic distortion (THD)
Leakagecurrent(I /I
NC TO COM,
COM TO NC
IN
)
0.5 nA
COM(OFF) NC(OFF)
L
ON
Power-supply current (I )
+
0.25 µA
H
OFF
Package option
5-pin SOT-23 or SC-70
ORDERING INFORMATION
(1)
(2)
T
PACKAGE
ORDERABLE PART NUMBER
TS5A4595DBVR
TS5A4595DCKR
TOP-SIDE MARKING
A
SOT (SOT-23) − DBV
SOT (SC−70) − DCK
Tape and reel
Tape and reel
JSB_
JT_
−40°C to 85°C
(1)
(2)
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.
DBV/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2005, Texas Instruments Incorporated
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SCDS180 − FEBRUARY 2005
Pin Configurations
Available in Other Pin Configurations
COM
NO
1
5
4
V
+
2
3
COM
NC
1
5
4
V
+
GND
IN
2
3
GND
IN
TS5A4594
1
2
3
1
2
3
V
V
+
5
4
5
4
IN
IN
TS5A4595
+
COM
GND
COM
GND
NO
NC
TS5A4596
TS5A4597
(1)(2)
Absolute Minimum and Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
(3)
V
V
Supply voltage range
−0.3
6
V
+
NC
(3)(4)
Analog voltage range
−0.3
−50
−20
V
+
+ 0.3
V
V
COM
I
K
Analog port diode current
On-state switch current
V
, V
NC COM
< 0
= 0 to V
mA
mA
I
I
NC
COM
V , V
NC COM
20
6
+
(3)(4)
V
I
Digital input voltage range
−0.3
−50
V
I
I
I
Digital input clamp current
V < 0
I
mA
mA
mA
IK
Continuous current through V
100
+
+
Continuous current through GND
−100
GND
DBV package
206
252
150
(5)
θ
Package thermal impedance
°C/W
°C
JA
DCK package
T
stg
Storage temperature range
−65
(1)
Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade
device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified
is not implied.
(2)
(3)
(4)
(5)
The algebraic convention, whereby the most negative value is a minimum and the most positive value is a maximum
All voltages are with respect to ground, unless otherwise specified.
The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
The package thermal impedance is calculated in accordance with JESD 51-7.
2
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SCDS180 − FEBRUARY 2005
(1)
Electrical Characteristics for 5-V Supply
V
+
= 4.5 V to 5.5 V, V = 2.4 V, V = 0.8 V T = −40°C to 85°C (unless otherwise noted)
IH
IL
A
PARAMETER
TEST CONDITIONS
MIN
MAX UNIT
SYMBOL
T
A
V
+
TYP
Analog Switch
Analog signal
range
V
V
,
COM
0
V
V
+
NC
on
25°C
5
8
ON-state
resistance
V
I
= 4.5 V, V
= 3.5 V,
Switch ON,
See Figure 13
+
NC
r
4.5 V
4.5 V
Ω
= 10 mA,
Full
10
COM
ON-state
resistance
flatness
25°C
Full
0.5
1.5
V
= 1.5 V, 2.5 V, 3.5 V,
= 10 mA,
Switch ON,
See Figure 13
NC
r
Ω
on(flat)
I
COM
2
0.5
5
NC
OFF leakage
current
V
NC
= 1 V, V
or
= 4.5 V, V
= 4.5 V,
= 1 V,
25°C
Full
−0.5
−5
0.01
0.01
COM
Switch OFF,
See Figure 14
I
5.5 V
5.5 V
nA
nA
NC(OFF)
V
V
NC
COM
COM
OFF leakage
current
= 1 V, V
= 4.5 V,
= 4.5 V, V = 1 V,
NC
25°C
Full
−0.5
−5
0.5
5
COM
NC
Switch OFF,
See Figure 14
or
I
COM(OFF)
V
V
COM
= 1 V, V
COM
= 1 V,
NC
NC
25°C
−1
0.01
0.01
1
NC
ON leakage
current
or
= 4.5 V, V
or
Switch ON,
See Figure 15
V
= 4.5 V,
I
5.5 V
5.5 V
nA
nA
COM
NC(ON)
Full
25°C
Full
−10
−1
10
1
V
V
= 1 V, 4.5 V, V
= Open,
= 1 V,
NC
NC
COM
= 1 V, V
or
= 4.5 V, V
COM
COM
ON leakage
current
Switch ON,
See Figure 15
I
V
= 4.5 V,
NC
COM(ON)
COM
COM
or
−10
10
V
= 1 V, 4.5 V, V
NC
= Open,
Digital Control Input (IN)
Input logic high
Input logic low
V
Full
Full
2.4
0
5.5
0.8
0.5
5
V
V
IH
V
IL
25°C
Full
−0.5
−5
0.01
Input leakage
current
I
, I
IH IL
V = V or 0
5.5 V
µA
I
+
(1)
The algebraic convention, whereby the most negative value is a minimum and the most positive value is a maximum
3
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SCDS180 − FEBRUARY 2005
(1)
Electrical Characteristics for 5-V Supply (continued)
V
+
= 4.5 V to 5.5 V, T = −40°C to 85°C (unless otherwise noted)
A
PARAMETER
TEST CONDITIONS
MIN
MAX UNIT
SYMBOL
T
V
TYP
12
9
A
+
Dynamic
25°C
Full
5 V
17
V
R
= 3 V,
= 300 Ω,
C = 35 pF,
L
NC
L
Turn-on time
t
ns
ON
See Figure 17
C = 35 pF,
L
4.5 V to 5.5 V
5 V
19
25°C
Full
14
V
R
= 3 V,
= 300 Ω,
NC
Turn-off time
t
ns
OFF
See Figure 17
4.5 V to 5.5 V
17
L
V
C
= 0, R = 0,
GEN
GEN
L
Charge injection
Q
See Figure 20
25°C 4.5 V to 5.5 V
2
6.5
6.5
13
5
pC
pF
pF
pF
C
= 1 nF,
NC
V
NC
= 0, f = 1 MHz,
C
See Figure 16
See Figure 16
See Figure 16
25°C
25°C
25°C
5 V
5 V
5 V
NC(OFF)
OFF capacitance
Switch OFF,
COM
OFF capacitance
V
= 0, f = 1 MHz,
COM
Switch OFF,
C
COM(OFF)
NC
V
= 0, f = 1 MHz,
NC
Switch ON,
C
NC(ON))
ON capacitance
COM
ON capacitance
V
= GND, f = 1 MHz,
COM
Switch ON,
C
See Figure 16
See Figure 16
See Figure 18
25°C
25°C
25°C
25°C
5 V
5 V
5 V
5 V
13
3
pF
pF
COM(ON)
Digital input
capacitance
C
I
V = V or GND,
I
+
R
= 50 Ω, Switch ON,
L
Bandwidth
BW
450
−82
MHz
dB
Signal = 0 dBm
R = 50 Ω, V
f = 1 MHz, C = 5 pF
= 1 V
RMS
Switch OFF,
See Figure 19
L
NC
OFF isolation
O
ISO
L
Total harmonic
distortion
R
= 600 Ω, C = 50 pF,
f = 20 Hz to 20 kHz,
See Figure 21
L
L
THD
25°C
5 V
0.04
0.01
%
V
= 5 V
,
SOURCE
p-p
Supply
25°C
0.25
0.5
Positive supply
current
I
+
V = V or GND,
I
Switch ON or OFF
5.5 V
µA
+
Full
(1)
The algebraic convention, whereby the most negative value is a minimum and the most positive value is a maximum
4
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SCDS180 − FEBRUARY 2005
(1)
Electrical Characteristics for 3-V Supply
V
+
= 2.7 V to 3.6 V, T = −40°C to 85°C (unless otherwise noted)
A
PARAMETER
TEST CONDITIONS
MIN
MAX UNIT
SYMBOL
T
A
V
+
TYP
Analog Switch
Analog signal
range
V
V
,
COM
0
V
V
+
NC
on
25°C
9.5
1.8
16
20
ON-state
resistance
V
I
= 3 V, V
NC
COM
= 1.5 V,
= 10 mA,
Switch ON,
See Figure 13
+
r
2.7 V
2.7 V
Ω
Full
ON-state
resistance
flatness
25°C
Full
6
7
V
I
= 1.5 V, 2.5 V,
= 10 mA,
Switch ON,
See Figure 13
NC
r
Ω
on(flat)
COM
NC
OFF leakage
current
V
= 1 V, V
or
= 3 V,
25°C
Full
−0.5
−5
0.01
0.01
0.5
5
NC
COM
Switch OFF,
See Figure 14
I
3.6 V
3.6 V
nA
nA
NC(OFF)
V
V
= 3 V, V
= 1 V,
= 3 V,
NC
COM
COM
OFF leakage
current
= 1 V, V
or
= 1 V, V
25°C
Full
−0.5
−5
0.5
5
COM
COM
NC
Switch OFF,
See Figure 14
I
COM(OFF)
V
V
= 3 V,
= 1 V,
NC
= 1 V, V
NC
NC
COM
COM
25°C
Full
−1
−10
−1
0.01
0.01
1
10
1
NC
ON leakage
current
or
= 3 V, V
or
Switch ON,
See Figure 15
I
V
= 3 V,
3.6 V
3.6 V
nA
nA
NC(ON)
V
V
= 1 V, 3 V, V = Open,
NC
COM
= 1 V, V
or
= 3 V, V
or
= 1 V,
= 3 V,
COM
NC
25°C
Full
COM
ON leakage
current
Switch ON,
See Figure 15
I
V
COM(ON)
COM
COM
NC
−10
10
V
= 1 V, 3 V, V
= Open,
NC
Digital Control Input (IN)
Input logic high
Input logic low
V
Full
Full
2
0
5.5
0.8
0.5
5
V
V
IH
V
IL
25°C
Full
−0.5
−5
0.01
Input leakage
current
I
, I
IH IL
V = V or 0
3.6 V
nA
I
+
(1)
The algebraic convention, whereby the most negative value is a minimum and the most positive value is a maximum
5
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SCDS180 − FEBRUARY 2005
(1)
Electrical Characteristics for 3-V Supply (continued)
V
+
= 2.7 V to 3.6 V, T = −40°C to 85°C (unless otherwise noted)
A
PARAMETER
TEST CONDITIONS
MIN
MAX UNIT
SYMBOL
T
V
TYP
20
A
+
Dynamic
25°C
Full
3 V
30
V
R
= 2 V,
= 300 Ω,
C = 35 pF,
L
NC
L
Turn-on time
t
ns
ON
See Figure 17
C = 35 pF,
L
2.7 V to 3.6 V
3 V
35
25°C
Full
15
25
V
R
= 2 V,
= 300 Ω,
NC
Turn-off time
t
ns
OFF
See Figure 17
2.7 V to 3.6 V
30
L
V
C
= 0, R = 0,
GEN
GEN
L
Charge injection
Q
See Figure 20
25°C
25°C
25°C
25°C
3 V
3 V
3 V
3 V
1
6.5
6.5
13
4
pC
pF
pF
pF
C
= 1 nF,
NC
V
NC
= 0, f = 1 MHz,
C
See Figure 16
See Figure 16
See Figure 16
NC(OFF)
OFF capacitance
Switch OFF,
COM
OFF capacitance
V
= 0, f = 1 MHz,
COM
Switch OFF,
C
COM(OFF)
NC
V
= 0, f = 1 MHz,
NC
Switch ON,
C
NC(ON)
ON capacitance
COM
ON capacitance
V
= 0, f = 1 MHz,
COM
Switch ON,
C
See Figure 16
See Figure 16
25°C
25°C
25°C
25°C
3 V
3 V
3 V
3 V
13
3
pF
pF
COM(ON)
Digital input
capacitance
C
I
V = V or GND,
I
+
R
= 50 Ω,
Switch ON,
See Figure 18
L
Bandwidth
BW
450
−82
MHz
dB
Signal = 0 dBm,
R
= 50 Ω, C = 5 pF,
Switch OFF,
See Figure 19
L
L
NC
OFF isolation
O
ISO
f = 1 MHz, V
= 1 V
RMS,
Total harmonic
distortion
R
= 600 Ω, C = 50 pF,
f = 20 Hz to 20 kHz,
See Figure 21
L
L
THD
25°C
3 V
0.09
0.01
%
V
= 3 V ,
SOURCE
p-p
Supply
25°C
0.25
0.5
Positive supply
current
I
+
V = V or GND,
I
Switch ON or OFF
3.6 V
µA
+
Full
(1)
The algebraic convention, whereby the most negative value is a minimum and the most positive value is a maximum
6
ꢀꢁ ꢂꢃ ꢄ ꢂꢅ ꢂ
ꢇW ꢁꢈ ꢁꢀ ꢃꢉꢃ ꢊꢋ ꢌ ꢁ ꢍꢎ ꢀꢏ ꢐ
ꢆ
ꢂ ꢇꢑꢒ ꢓ ꢔꢓ ꢇꢑ ꢁꢎ ꢉꢌ ꢊ ꢕꢇꢏꢐꢃꢉ ꢉꢕꢊ ꢃꢉꢃ ꢊꢋ ꢌ ꢁ ꢍꢎ ꢀꢏ ꢐ
www.ti.com
SCDS180 − FEBRUARY 2005
TYPICAL PERFORMANCE
10
8
T
A
= 25_C
8
6
4
2
0
6
V
= 3 V
= 5 V
855C
+
255C
4
–405C
V
+
2
0
0
1
2
3
4
5
0
1
2
3
4
5
V
COM
(V)
V
COM
(V)
Figure 1. r vs V
on
COM
Figure 2. r vs V
(V = 5 V)
+
on
COM
1.0
0.8
0.6
0.4
0.2
0.0
10
8
I
/I
COM(ON) NO(ON)
–405C
6
I
/I
NO(OFF) COM(OFF)
4
255C
855C
2
0
0
1
2
3
−40°C
25°C
A
85°C
V
COM
(V)
T (°C)
Figure 4. Leakage Current vs Temperature
(V = 5 V)
Figure 3. r vs V
(V = 3 V)
+
on
COM
+
2.0
1.5
20
18
16
14
12
10
8
t
ON
1.0
t
OFF
0.5
V
= 5 V
+
0.0
V
+
= 3 V
−0.5
−1.0
−1.5
−2.0
6
0
1
2
3
4
5
0
1
2
3
(V)
4
5
6
V
Bias Voltage (V)
+
Figure 6. t
and t
vs Supply Voltage
Figure 5. Charge-Injection (Q ) vs V
ON
OFF
C
COM
7
ꢀ ꢁ ꢂꢃ ꢄ ꢂ ꢅ ꢂ
ꢇW ꢁꢈ ꢁꢀ ꢃ ꢉ ꢃꢊ ꢋꢌ ꢁ ꢍꢎ ꢀ ꢏꢐ
ꢆ
ꢂ
ꢇ
ꢑꢒ
ꢓ
ꢔꢓ
ꢇ
ꢑ
ꢁ
ꢎ
ꢉ
ꢌ
ꢊ
ꢕ
ꢇ
ꢏ
ꢐ
ꢃ
ꢉ
ꢉ
ꢕ
ꢊ
ꢃ
ꢉ
ꢃ
ꢊ
ꢋꢌ
ꢁ
ꢍ
ꢎ
ꢀ
ꢏ
ꢐ
www.ti.com
SCDS180 − FEBRUARY 2005
TYPICAL PERFORMANCE (continued)
12
11
10
3
V
IH
2
1
0
9
8
7
6
t
ON
V
IL
t
OFF
−40°C
25°C
(5C)
85°C
0
1
2
3
4
5
6
T
V
(V)
A
+
Figure 7. t
and t
vs Temperature (V = 5 V)
Figure 8. Logic-Level Threshold vs V
ON
OFF
+
+
0.0
−0.5
−1.0
−1.5
−2.0
−2.5
−3.0
−3.5
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
−4.0
0.1
1
10
Frequency (MHz)
100
1000
0.1
1
10
100
1000
Frequency (MHz)
Figure 9. Bandwidth (Gain vs Frequency)
Figure 10. OFF Isolation vs Frequency
(V = 5 V)
+
10
9
8
7
6
5
4
3
2
1
0
0.20
0.15
0.10
0.05
0.00
V
= 5 V
+
V
V
= 3 V
= 5 V
+
V
+
= 3 V
+
−40°C
25°C
85°C
0.1
1
10
Frequency (MHz)
100
1000
T
A
(5C)
Figure 12. Total Harmonic Distortion vs
Frequency
Figure 11. Power-Supply Current vs
Temperature
8
ꢀꢁ ꢂꢃ ꢄ ꢂꢅ ꢂ
ꢇW ꢁꢈ ꢁꢀ ꢃꢉꢃ ꢊꢋ ꢌ ꢁ ꢍꢎ ꢀꢏ ꢐ
ꢆ
ꢂ ꢇꢑꢒ ꢓ ꢔꢓ ꢇꢑ ꢁꢎ ꢉꢌ ꢊ ꢕꢇꢏꢐꢃꢉ ꢉꢕꢊ ꢃꢉꢃ ꢊꢋ ꢌ ꢁ ꢍꢎ ꢀꢏ ꢐ
www.ti.com
SCDS180 − FEBRUARY 2005
PIN DESCRIPTION
PIN
NUMBER
NAME
DESCRIPTION
1
2
3
4
5
COM
NC
Common
Normally closed
Digital ground
GND
IN
Digital control pin to connect COM to NC
Power supply
V
+
PARAMETER DESCRIPTION
SYMBOL
DESCRIPTION
V
Voltage at COM
Voltage at NC
Resistance between COM and NC ports when the channel is ON
COM
V
NC
r
r
on
Difference between the maximum and minimum value of r in a channel over the specified range of conditions
on
on(flat)
I
I
Leakage current measured at the NC port, with the corresponding channel (NC to COM) in the OFF state
NC(OFF)
Leakage current measured at the NC port, with the corresponding channel (NC to COM) in the ON state and the output (COM)
open
NC(ON)
I
Leakage current measured at the COM port, with the corresponding channel (COM to NC) in the OFF state
COM(OFF)
Leakage current measured at the COM port, with the corresponding channel (COM to NC) in the ON state and the output (NC)
open
I
COM(ON)
V
Minimum input voltage for logic high for the control input (IN)
Maximum input voltage for logic low for the control input (IN)
Voltage at the control input (IN)
IH
IL
I
V
V
I , I
IH IL
Leakage current measured at the control input (IN)
Turn-on time for the switch. This parameter is measured under the specified range of conditions and by the propagation delay
between the digital control (IN) signal and analog output (COM or NC) signal when the switch is turning ON.
t
ON
Turn-off time for the switch. This parameter is measured under the specified range of conditions and by the propagation delay
between the digital control (IN) signal and analog output (COM or NC) signal when the switch is turning OFF.
t
OFF
Charge injection is a measurement of unwanted signal coupling from the control (IN) input to the analog (NC or COM) output.
This is measured in coulomb (C) and measured by the total charge induced due to switching of the control input.
Q
C
Charge injection, Q = C × ∆V
, C is the load capacitance, and ∆V is the change in analog output voltage.
C
L
COM
L
COM
C
C
Capacitance at the NC port when the corresponding channel (NC to COM) is OFF
Capacitance at the NC port when the corresponding channel (NC to COM) is ON
Capacitance at the COM port when the corresponding channel (COM to NC) is OFF
Capacitance at the COM port when the corresponding channel (COM to NC) is ON
Capacitance of control input (IN)
NC(OFF)
NC(ON)
C
COM(OFF)
C
COM(ON)
C
I
OFF isolation of the switch is a measurement of OFF-state switch impedance. This is measured in dB in a specific frequency,
with the corresponding channel (NC to COM) in the OFF state.
O
ISO
BW
Bandwidth of the switch. This is the frequency in which the gain of an ON channel is −3 dB below the DC gain.
Total harmonic distortion describes the signal distortion caused by the analog switch. This is defined as the ratio of root mean
square (RMS) value of the second, third, and higher harmonic to the absolute magnitude of the fundamental harmonic.
THD
I
+
Static power-supply current with the control (IN) pin at V or GND
+
9
ꢀ ꢁ ꢂꢃ ꢄ ꢂ ꢅ ꢂ
ꢇW ꢁꢈ ꢁꢀ ꢃ ꢉ ꢃꢊ ꢋꢌ ꢁ ꢍꢎ ꢀ ꢏꢐ
ꢆ
ꢂ
ꢇ
ꢑꢒ
ꢓ
ꢔ
ꢓ
ꢇ
ꢑ
ꢁ
ꢎ
ꢉ
ꢌ
ꢊ
ꢕ
ꢇ
ꢏ
ꢐ
ꢃ
ꢉ
ꢉ
ꢕ
ꢊ
ꢃ
ꢉ
ꢃ
ꢊ
ꢋꢌ
ꢁ
ꢍ
ꢎ
ꢀ
ꢏ
ꢐ
www.ti.com
SCDS180 − FEBRUARY 2005
PARAMETER MEASUREMENT INFORMATION
V
+
V
NC
IN
NC
COM
V
COM
+
Channel ON
VCOM * VNC
r
+
W
on
ICOM
I
COM
V
I
V = V or V
I IH IL
+
GND
Figure 13. ON-State Resistance (r
)
on
V
+
V
NC
IN
NC
OFF-State Leakage Current
Channel OFF
COM
V
COM
+
+
V = V or V
I IH IL
V
I
+
GND
Figure 14. OFF-State Leakage Current (I
, I
)
COM(OFF) NC(OFF)
V
+
V
NC
IN
NC
COM
ON-State Leakage Current
Channel ON
V
COM
+
V = V or V
I IH IL
V
I
+
GND
Figure 15. ON-State Leakage Current (I
, I
)
COM(ON) NC(ON)
10
ꢀꢁ ꢂꢃ ꢄ ꢂꢅ ꢂ
ꢇW ꢁꢈ ꢁꢀ ꢃꢉꢃ ꢊꢋ ꢌ ꢁ ꢍꢎ ꢀꢏ ꢐ
ꢆ
www.ti.com
ꢂ
ꢇ
ꢑ
ꢒ
ꢓ
ꢔ
ꢓ
ꢇ
ꢑ
ꢁ
ꢎ
ꢉ
ꢌ
ꢊ
ꢕ
ꢇ
ꢏ
ꢐ
ꢃ
ꢉ
ꢉ
ꢕ
ꢊ
ꢃ
ꢉ
ꢃ
ꢊꢋ
ꢌ
ꢁ
ꢍ
ꢎ
ꢀ
ꢏ
ꢐ
SCDS180 − FEBRUARY 2005
V
+
V
V
NC
NC
V
= V or GND
+
Capacitance
Meter
BIAS
V = V or V
I IH IL
f = 1 MHz
COM
IN
COM
V
BIAS
Capacitance is measured at NC,
COM, and IN inputs during ON
and OFF conditions.
V
I
GND
Figure 16. Capacitance (C , C
, C
, C
, C
)
I
COM(OFF) COM(ON) NC(OFF) NC(ON)
V
+
TEST
R
L
C
L
NC
V
NC
t
300 Ω
300 Ω
35 pF
35 pF
ON
(3)
COM
COM
IN
V
(2)
C
L
R
L
t
OFF
V
I
V
0
Logic
Input
(V )
I
+
50%
50%
Logic
(1)
GND
Input
t
t
ON
OFF
Switch
Output
90%
90%
(V
)
COM
(1)
(2)
(3)
All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z = 50 Ω, t < 5 ns, t < 5 ns.
O
r
f
C
includes probe and jig capacitance.
L
See Electrical Characteristics for V
.
COM
Figure 17. Turn-On (t ) and Turn-Off Time (t
)
ON
OFF
V
+
Network Analyzer
50 W
V
NC
NC
IN
Channel ON: NC to COM
V = V or GND
V
COM
COM
I
+
Source
Signal
Network Analyzer Setup
V
Source Power = 0 dBm
(632-mV P-P at 50-W load)
I
50 W
+
GND
DC Bias = 350 mV
Figure 18. Bandwidth (BW)
11
ꢀ ꢁ ꢂꢃ ꢄ ꢂ ꢅ ꢂ
ꢇW ꢁꢈ ꢁꢀ ꢃ ꢉ ꢃꢊ ꢋꢌ ꢁ ꢍꢎ ꢀ ꢏꢐ
ꢆ
ꢂ
ꢇ
ꢑꢒ
ꢓ
ꢔꢓ
ꢇ
ꢑ
ꢁ
ꢎ
ꢉ
ꢌ
ꢊ
ꢕ
ꢇ
ꢏ
ꢐ
ꢃ
ꢉ
ꢉ
ꢕ
ꢊ
ꢃ
ꢉ
ꢃ
ꢊ
ꢋꢌ
ꢁ
ꢍ
ꢎ
ꢀ
ꢏ
ꢐ
www.ti.com
SCDS180 − FEBRUARY 2005
V
+
Network Analyzer
Channel OFF: NC to COM
V = V or GND
50 W
V
NC
IN
NC
I
+
V
COM
COM
Source
Signal
Network Analyzer Setup
Source Voltage = 1 V
V
RMS
I
50 W
+
DC Bias = 350 mV
GND
Figure 19. OFF Isolation (O
)
ISO
V
IH
V
+
Logic
Input
OFF
ON
OFF
V
(V
I)
IL
R
GEN
NC
COM
V
COM
+
V
COM
∆V
COM
V
GEN
(1)
C
L
V
= 0 to V
= 0
= 1 nF
GEN
+
V
I
IN
R
C
GEN
L
Logic
(2)
GND
Q = C ×∆V
V = V or V
I IH IL
C L COM
Input
(1)
(2)
C
includes probe and jig capacitance.
L
All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z = 50 Ω, t < 5 ns, t < 5 ns.
O
r
f
Figure 20. Charge Injection (Q )
C
V = V /2 or −V /2
Channel ON: COM to NC
= V P-P
R
L
C
L
= 600 Ω
I
+
+
V
f = 20 Hz to 20 kHz
SOURCE
= 50 pF
SOURCE
+
LP Filter = 80 kHz
HP Filter = 10 Hz
V /2
+
Audio Analyzer
NC
Source
Signal
COM
(1)
C
L
600 W
V
I
IN
GND
600 W
−V /2
+
(1)
C
L
includes probe and jig capacitance.
Figure 21. Total Harmonic Distortion (THD)
12
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