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OP1177 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer OP1177
Beschreibung Precision Low Noise / Low Input Bias Current Operational Amplifiers
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 24 Seiten
OP1177 Datasheet, Funktion
FEATURES
Low offset voltage: 60 μV maximum
Very low offset voltage drift: 0.7 μV/°C maximum
Low input bias current: 2 nA maximum
Low noise: 8 nV/√Hz typical
CMRR, PSRR, and AVO > 120 dB minimum
Low supply current: 400 μA per amplifier
Dual supply operation: ±2.5 V to ±15 V
Unity-gain stable
No phase reversal
Inputs internally protected beyond supply voltage
APPLICATIONS
Wireless base station control circuits
Optical network control circuits
Instrumentation
Sensors and controls
Thermocouples
Resistor thermal detectors (RTDs)
Strain bridges
Shunt current measurements
Precision filters
Precision Low Noise, Low Input
Bias Current Operational Amplifiers
OP1177/OP2177/OP4177
PIN CONFIGURATIONS
NC 1
8 NC
–IN
+IN
OP1177
V+
OUT
V– 4
5 NC
NC = NO CONNECT
Figure 1. 8-Lead MSOP (RM Suffix)
NC 1
–IN 2
+IN 3
V– 4
OP1177
8 NC
7 V+
6 OUT
5 NC
NC = NO CONNECT
Figure 2. 8-Lead SOIC_N (R Suffix)
OUT A
–IN A
+IN A
V–
18
OP2177
45
V+
OUT B
–IN B
+IN B
Figure 3. 8-Lead MSOP (RM Suffix)
OUT A 1
–IN A 2
+IN A 3
V– 4
OP2177
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 4. 8-Lead SOIC_N (R Suffix)
OUT A 1
–IN A 2
14 OUT D
13 –IN D
+IN A 3
12 +IN D
V+ 4 OP4177 11 V–
+IN B 5
10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 5. 14-Lead SOIC_N (R Suffix)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1 14
OP4177
78
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
Figure 6. 14-Lead TSSOP (RU Suffix)
GENERAL DESCRIPTION
The OPx177 family consists of very high precision, single, dual,
and quad amplifiers featuring extremely low offset voltage and
drift, low input bias current, low noise, and low power consump-
tion. Outputs are stable with capacitive loads of over 1000 pF
with no external compensation. Supply current is less than 500 μA
per amplifier at 30 V. Internal 500 Ω series resistors protect the
inputs, allowing input signal levels several volts beyond either
supply without phase reversal.
Unlike previous high voltage amplifiers with very low offset
voltages, the OP1177 (single) and OP2177 (dual) amplifiers
are available in tiny 8-lead surface-mount MSOP and 8-lead
narrow SOIC packages. The OP4177 (quad) is available in
TSSOP and 14-lead narrow SOIC packages. Moreover, specified
performance in the MSOP and the TSSOP is identical to
performance in the SOIC package. MSOP and TSSOP are
available in tape and reel only.
The OPx177 family offers the widest specified temperature
range of any high precision amplifier in surface-mount packaging.
All versions are fully specified for operation from −40°C to
+125°C for the most demanding operating environments.
Applications for these amplifiers include precision diode
power measurement, voltage and current level setting, and
level detection in optical and wireless transmission systems.
Additional applications include line-powered and portable
instrumentation and controls—thermocouple, RTD, strain-
bridge, and other sensor signal conditioning—and precision filters.
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2001–2009 Analog Devices, Inc. All rights reserved.






OP1177 Datasheet, Funktion
OP1177/OP2177/OP4177
TYPICAL PERFORMANCE CHARACTERISTICS
50
VSY = ±15V
45
40
35
30
25
20
15
10
5
0
–40
–30 –20 –10 0
10 20
INPUT OFFSET VOLTAGE (µV)
30
Figure 7. Input Offset Voltage Distribution
40
1.8
VSY = ±15V
1.6 TA = 25°C
1.4
1.2
1.0
0.8 SOURCE
0.6
SINK
0.4
0.2
0
0.001
0.01 0.1
LOAD CURRENT (mA)
1
10
Figure 10. Output Voltage to Supply Rail vs. Load Current
90
VSY = ±15V
80
70
60
50
40
30
20
10
0
0.05
0.15 0.25 0.35 0.45 0.55
INPUT OFFSET VOLTAGE DRIFT (µV/°C)
0.65
Figure 8. Input Offset Voltage Drift Distribution
3
VSY = ±15V
2
1
0
–1
–2
–3
–50
0 50 100
TEMPERATURE (°C)
Figure 11. Input Bias Current vs. Temperature
150
140
VSY = ±15V
120
100
80
60
40
20
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
INPUT BIAS CURRENT (nA)
Figure 9. Input Bias Current Distribution
60
VSY = ±15V
50 CL = 0
RL =
40
270
225
180
30
GAIN
20
10
PHASE
135
90
45
00
–10 –45
–20
100k
1M
FREQUENCY (Hz)
–90
10M
Figure 12. Open-Loop Gain and Phase Shift vs. Frequency
Rev. G | Page 6 of 24

6 Page









OP1177 pdf, datenblatt
OP1177/OP2177/OP4177
VSY = ±5V
TIME (1s/DIV)
Figure 43. 0.1 Hz to 10 Hz Input Voltage Noise
18
VSY = ±5V
16
14
12
10
8
6
4
2
0 50 100 150 200
FREQUENCY (Hz)
Figure 44. Voltage Noise Density vs. Frequency
250
35
30
+ISC
25
–ISC
20
VSY = ±5V
15
10
5
0
–50 0 50 100
TEMPERATURE (°C)
Figure 45. Short-Circuit Current vs. Temperature
150
4.40
4.35
VSY = ±5V
4.30
4.25
4.20
+VOH
–VOL
4.15
4.10
4.05
4.00
–50
0 50 100
TEMPERATURE (°C)
Figure 46. Output Voltage Swing vs. Temperature
150
25
VSY = ±5V
20
15
10
5
0
–50 0
50 100
TEMPERATURE (°C)
Figure 47. Input Offset Voltage vs. Temperature
150
600
500
VSY = ±15V
400
VSY = ±5V
300
200
100
0
–50 0
50 100
TEMPERATURE (°C)
Figure 48. Supply Current vs. Temperature
150
Rev. G | Page 12 of 24

12 Page





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