MN2311H/B [SPECTRUM]
Instrumentation Amplifier, 1 Func, CQCC44, CERAMIC, LCC-44;
| 型号： | MN2311H/B |
| 厂家： | 
SPECTRUM MICROWAVE, INC. |
| 描述： | Instrumentation Amplifier, 1 Func, CQCC44, CERAMIC, LCC-44 放大器 |
| 文件： | 总8页 (文件大小：168K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MN2310 Series
Precision, Low-Noise JFET Instrumentation Amplifiers
The MN2310 Series exceptionally low
Features:
noise characteristics and low input bias
current is made possible with the use of
■ Ultra Low Noise:
a large-area discrete JFET differential
1.65nV/ Hz Voltage Noise
input stage. These selected and matched
4fA/ Hz Current Noise
JFETs exhibit superior noise characteris-
tics to those available in monolithic
JFET instrumentation amplifiers.
■ Sub-Audio 1/f Noise
Corner
The JFET input stage is combined with
low-noise opamps to provide an excep-
tional bandwidth composite amplifier
with low distortion characteristics.
Precision laser-trimmed resistors facilitate
high gain accuracy without the use of
external resistors. Internal compensation
provides maximum flat gain to 1MHz.
One user-selected external capacitor is
required to precisely set the 6dB/octave
low-frequency gain roll-off, a feature
often desired in AC amplifiers.
■ Fixed Gain:
30dB (MN2310)
40dB (MN2311)
50dB (MN2312)
■ Gain Accuracy ±0.25dB
■ Wide Power Supply
Range +/-8V to +/-15V
■ 1MHz Input Bandwidth
The devices are available in factory-set
fixed gains of 30dB, 40dB, and 50dB
(MN2310, MN2311, and MN2312,
respectively) and are packaged in small
44-pin ceramic leadless chip carriers
(CLCCs). Commercial devices are
specified for 0°C to +70°C operation
while “H” models are specified for
-55°C to +125°C operation. “H/B”
models are available with environmental
stress screening while “H/B CH” models
are compliant with MIL-H-38534
requirements.
■ True Differential Inputs
600MΩ Impedence
■ Over Voltage Protected
■ Small 44-pin CLCC
(JEDEC “C”)
■ 0°C to +70°C, -55°C to
+125°C Operation
■ Optional Environmental
Stress Screening or
Applications for the MN2310 Series
include SONAR systems and other
piezoelectric transducer-based systems
(hydrophones, seismometers, accelerom-
eters, condenser microphones) as well
as CT scanners, Ultrasound, high
energy physics instrumentation and
other instrumentation.
Compliant MIL-H-38534
Models Available
(Contact Factory)
For additional information
regarding Custom Microelectronic
Products and Services, please contact
Micro Networks at:
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Web Site – http://www.mnc.com
MN2310 Series
Low Noise JFET
Instrumentation Amplifiers
Specifications
Specifications @ TA=+25°C, Supply Voltages +/-12V, unless otherwise indicated
Units
Min.
Parameter
Max.
Condition
Typ.
Fixed Gain:
MN2310
MN2311
MN2312
dB
dB
dB
30
40
50
Single Ended Output
MN2310
MN2311
MN2312
dB
dB
dB
36
46
56
Balanced Output
Gain Error @ +25
°C
VO = Pin 24 to GND
VO = Pin 24 to GND
dB
+/-0.1
+/-0.25
Gain Tempco
dB/°C
+/-0.001
Input Characteristics
Bias Current
pA
4
Impedance, Differential
Impedance, Common Mode
Overload Protection
Voltage Noise
M
Ω
/pF
/pF
600/12
150/48
MΩ
100
µ
sec Current Pulse
A
0.5
2
@ 10kHz
@ 10kHz
nV/ Hz
fA/ Hz
1.65
4
Current Noise
20
Output Characteristics
Voltage Swing:
RL = 2k
RL = 2k
Ω
Ω
, THD = -60dB
, THD = -60dB
V rms
V rms
mA
Single Ended
Balanced
Short Circuit Current
Capacitive Load Stability
Total Harmonic Distortion
Offset @ Pin 24
2.25
4.50
34
Pin 23, Pin 24
Pin 23, Pin 24
pF
dB
200
-90
50
RL = 2k
Ω
, VO = 2V rms
Unity D.C. Gain
VO = -12dB
mV
MHz
25
Small Signal Bandwidth
Slew Rate
1
V/µsec
3.5
Power Supply Requirements
Power Supply Range
Current Drains:
+/-15
Volts
+/-8
+/-12
+VCC
+14
-14
mA
mA
+12
-12
-VCC
Specifications subject to change without notification as Micro Networks reserves the right to make improvements and changes in its products.
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Web Site – http://www.mnc.com
MN2310 Series
Low Noise JFET
Instrumentation Amplifiers
Absolute Maximum Ratings
Ordering Information
Operating Temperature Range
-55°C to +125°C
Part Number
MN2310 H/B CH
Specified Temperature Range
MN231X
Select desired gain. MN2310 for 30dB,
MN2311 for 40dB and MN2312 for 50dB.
0°C to +70°C
MN231XH, H/B, H/B CH
-55°C to +125°C
Select temperature range. Standard device
is specified for 0°C to +70°C operation. Add
“H” for -55°C to +125°C operation.
Storage Temperature Range
-65°C to +150°C
Supply Voltage
+/-15V
1V rms
Add “/B” suffix for environmental stress
screening to “H” models.
Analog Input Voltage
Add “CH” suffix to “H/B” models
for compliant MIL-H-38534 processing.
Consult factory for availability.
Block Diagram
Bypass
+V Supply
Lid
Substrate
V out (+)
In +
300MΩ
300MΩ
Rg
Input
Protection
JFET
INA
V out (-)
In -
Cext
Bypass
-V Supply
Ground
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Web Site – http://www.mnc.com
MN2310 Series
Low Noise JFET
Instrumentation Amplifiers
Pin Designations
1. Cext/RAgain
12. NC
23. Voltage Out (+) 34. NC
24. Voltage Out (-) 35. NC
2. Cext
3. Ground
4. NC
13. NC
14. -V Bypass
15. NC
25. +V Supply
26. NC
36. R9 Gain
37. NC
5. NC
16. NC
27. +V Bypass
28. NC
38. NC
PIN 1
6. NC
17. NC
39. NC
7. NC
18. -V Bypass
19. NC
29. NC
40. Input (+)
41. Input (-)
42. NC
8. NC
30. NC
9. NC
20. -V Supply
21. NC
31. NC
10. NC
11. NC
32. NC
43. Shield (Lid)
44. Shield (Sub.)
22. NC
33. NC
Input Protection - Protecting the input stage of a
low noise amplifier from destructive input transients
is a complex problem. Normal diodes and MOV’s
present loading problems when placed across the
input terminals. Biased diodes (diodes connected
from the input leads to V+ and V- in a reversed
condition) contribute to input noise current. Input
series resistors used in a series current limiting
circuit seriously add to the noise voltage (En) of most
low noise amplifiers.
current pulses of up to 2A-seconds from kilovolt
transients (open circuit).
1/f noise for low audio and subaudio applications
- Highly sensitive instruments, such as seismographs
and radiation detectors use the low audio and
sub-audio frequency bands. In these applications,
amplifiers are required to have exceptionally low
1/f noise characteristics. Unfortunately, all semicon-
ductors exhibit some degree of 1/f noise depending
on the type of semiconductor device and process.
1/f noise is typically quantified by identifying the
break frequency f/1 where the noise density has risen
3dB above the mid band value.
The MN2310 Series Low NoiseAmplifiers contain
a unique input protection circuit which has been
carefully designed to protect the amplifier without
causing unwanted noise performance deterioration.
Standard product devices are protected from
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Web Site – http://www.mnc.com
MN2310 Series
Low Noise JFET
Instrumentation Amplifiers
The n-type JFET front end in the MN2310 Series
Low Noise Instrumentation Amplifiers produces
exceptionally low 1/f noise. A typical noise density
of the En parameter of the MN2310 is shown below.
Gain
20dB per
Octave
MN2310 1/f Spectral Density
1
10
100
1000
10000
-140
f
3dB
Frequency
-150
-160
Adjusting Device Gain - The gain of the MN2310
SeriesAmplifiers is predetermined by three resistors,
two of which are laser trimmed thin film resistor
networks. However, access to the gain setting resis-
tors (R7 and R9) for the MN2310 Series is provided
for user-defined gains via external resistors. Resis-
tors R7 and R9 are internal to the MN2310 Series
amplifiers and have values as follows:
-170
-180
Frequency
High CMR Amplifier - The MN2310 Series is
shown below connected as a high-CMR ac ampli-
fier. The ac configuration uses a single bypass
capacitor (Cext) to set the low frequency 3dB roll-
off point. The low frequency roll-off as a function
of the value of Cext is given below and depicted in
the following figure.
Device Fixed Gain R7(kΩ) R9(Ω)
MN2310
MN2311
MN2312
30dB
40dB
50dB
1.42
4.59
46
46
46
14.50
F3dB = 1/2π RC where R = 46Ω
Gain Formula:
Gain (dB) = 20 Log (R7 / Req + 0.5)
+V Supply
where Req = R9 // Rext for an increase in gain or
where Req = R9 + Rext to decrease gain.
0.1 uF
R/2
40
+
1
V/2
-
+
MN2310
Cext
44
V/2
-
2
14
41
30
0.1 uF
R/2
-V Supply
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Web Site – http://www.mnc.com
MN2310 Series
Low Noise JFET
Instrumentation Amplifiers
Performance Curves
Frequency Response
60
50
40
30
MN2310
MN2311
MN2312
20
10
0
10
100
1000
10000
100000
1000000
10000000
Frequency, Hz
Total Harmonic Distortion, MN2311
100
90
80
70
60
+/-8V, 10Vpp
+/-15V, 10Vpp
3Vpp
50
40
30
20
10
0
1000
10000
100000
Frequency, Hz
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Web Site – http://www.mnc.com
MN2310 Series
Low Noise JFET
Instrumentation Amplifiers
Performance Curves
MN2310 Series CMR
10
100
1000
10000
100000
0
-10
-20
-30
-40
-50
-60
-70
-80
MN2310
MN2311
MN2312
-90
-100
Frequency, Hz
MN2310 Series Supply Rejection
100
1000
10000
100000
0
-20
-40
-60
-80
Positive Supply
Negative Supply
-100
-120
Frequency, Hz
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Web Site – http://www.mnc.com
MN2310 Series
Low Noise JFET
Instrumentation Amplifiers
Performance Curves
Noise as a Function of Frequency
2.0
1.5
1.0
0.5
V
V
CC = +/-8V
CC = +/-15V
0
10
100
1000
10000
100000
Frequency, Hz
Package Outline
0.050typ (1.270)
0.650 + .012/-.007 SQ
A 0.008 R typ; (0.203)
B
A
B 0.075 +/-0.010; (1.905+/-0.254)
C 0.141 max; (3.581)
0.025 typ
(0.635)
PIN ONE
IDENT.
Dimensions in Inches (MM)
0.085
0.050 typ
(1.270)
0.040 x 45°C
(1016)
0.020 x 45°C REF
C
(0.508)
3 Places
324 Clark St., Worcester, MA 01606
Tel. (508) 852-5400 • FAX (508) 853-8296
E-Mail – sales@mnc.com
Revision 1 1/98 - 5M
© Copyright 1998
Web Site – http://www.mnc.com
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