OP1177 Analog Devices, OP1177 Datasheet

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OP1177

Manufacturer Part Number
OP1177
Description
Precision Low Noise, Low Input Bias Current Op Amp (Single)
Manufacturer
Analog Devices
Datasheet

Specifications of OP1177

-3db Bandwidth
1.3MHz
Slew Rate
700mV/µs
Vos
15µV
Ib
500pA
# Opamps Per Pkg
1
Input Noise (nv/rthz)
7.9nV/rtHz
Vcc-vee
5V to 36V
Isy Per Amplifier
500µA
Packages
SOIC,SOP

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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 A
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
Precision filters
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
Rev. E
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.
Trademarks and registered trademarks are the property of their respective owners.
Thermocouples
Resistor thermal detectors (RTDs)
Strain bridges
Shunt current measurements
VO
> 120 dB minimum
Bias Current Operational Amplifiers
Precision Low Noise, Low Input
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
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.
Figure 5. 14-Lead SOIC_N (R Suffix)
OUT A
OUT A 1
OUT B 7
Figure 1. 8-Lead MSOP (RM Suffix)
Figure 3. 8-Lead MSOP (RM Suffix)
+IN A
+IN A 3
+IN B 5
–IN A
–IN A 2
–IN B 6
–IN
+IN
NC
V–
V–
V+ 4
NC = NO CONNECT
1
4
OP1177
1
4
OP4177
OP1177/OP2177/OP4177
OP2177
8
5
8
5
PIN CONFIGURATIONS
©2001–2007 Analog Devices, Inc. All rights reserved.
14
13
12
11
10
9
8
NC
V+
OUT
NC
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
Figure 6. 14-Lead TSSOP (RU Suffix)
OUT A
OUT B
Figure 2. 8-Lead SOIC_N (R Suffix)
OUT A
Figure 4. 8-Lead SOIC_N (R Suffix)
–IN A
+IN A
+IN B
–IN B
+IN A
–IN A
–IN
+IN
NC
V+
V–
V–
NC = NO CONNECT
1
2
3
4
1
2
3
4
OP1177
1
7
OP4177
OP2177
www.analog.com
14
8
8
7
6
5
8
7
6
5
NC
V+
NC
OUT
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C

Related parts for OP1177

OP1177 Summary of contents

Page 1

... 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 ...

Page 2

... OP1177/OP2177/OP4177 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 4 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution .................................................................................. 5 Typical Performance Characteristics ............................................. 6 Functional Description .................................................................. 14 Total Noise-Including Source Resistors ................................... 14 Gain Linearity ............................................................................. 14 Input Overvoltage Protection ................................................... 15 Output Phase Reversal ............................................................... 15 Settling Time ............................................................................... 15 REVISION HISTORY 11/07— ...

Page 3

... V to ± −40°C < T < +125° −40°C < T < +125° kΩ L GBP e p-p 0 kHz kHz 100 kHz Rev Page OP1177/OP2177/OP4177 1 Min Typ Max Unit 15 60 μ μV 25 100 μV 25 120 μV −2 +0 −1 +0 −3.5 +3.5 V 120 126 dB 118 125 ...

Page 4

... OP1177/OP2177 OP4177 OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Current Short-Circuit Current POWER SUPPLY Power Supply Rejection Ratio OP1177 OP2177/OP4177 Supply Current per Amplifier DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density ...

Page 5

... MSOP (RM-8) −65°C to +150°C 8-Lead SOIC_N (R-8) 14-Lead SOIC_N (R-14) −40°C to +125°C 14-Lead TSSOP (RU-14) −65°C to +150°C 1 MSOP is available in tape and reel only. 300°C ESD CAUTION Rev Page OP1177/OP2177/OP4177 θ θ Unit 190 44 °C/W 158 43 ° ...

Page 6

... OP1177/OP2177/OP4177 TYPICAL PERFORMANCE CHARACTERISTICS ±15V –40 –30 –20 – INPUT OFFSET VOLTAGE (µV) Figure 7. Input Offset Voltage Distribution 0.05 0.15 0.25 0.35 INPUT OFFSET VOLTAGE DRIFT (µV/°C) Figure 8. Input Offset Voltage Drift Distribution 140 V = ±15V SY 120 100 0.1 0.2 0.3 ...

Page 7

... Figure 15. Large Signal Transient Response V = ±15V 4mV p ∞ GND 10M 100M Figure 17. Small Signal Overshoot vs. Load Capacitance 0V –15V +200mV 0V Rev Page OP1177/OP2177/OP4177 V = ±15V 1,000pF 2kΩ 100mV TIME (100µs/DIV) Figure 16. Small Signal Transient Response V = ±15V 2kΩ 100mV p-p IN +OS –OS 10 100 1k CAPACITANCE (pF ±15V 10kΩ – ...

Page 8

... OP1177/OP2177/OP4177 OUTPUT 15V ±15V 10kΩ –100 200mV IN 0V –200mV INPUT TIME (4µs/DIV) Figure 19. Negative Overvoltage Recovery 140 120 100 100 1k 10k 100k FREQUENCY (Hz) Figure 20. CMRR vs. Frequency 140 120 100 80 +PSRR 100 1k 10k 100k FREQUENCY (Hz) Figure 21. PSRR vs. Frequency ±15V 10M ±15V ...

Page 9

... V = ±15V 150 –40 Rev Page OP1177/OP2177/OP4177 V = ±15V 100 TEMPERATURE (°C) Figure 28. CMRR vs. Temperature V = ±15V 100 TEMPERATURE (°C) Figure 29. PSRR vs. Temperature = ±5V SY –30 –20 – INPUT OFFSET VOLTAGE (µV) Figure 30. Input Offset Voltage Distribution ...

Page 10

... OP1177/OP2177/OP4177 1 ± 25°C A 1.2 1.0 0.8 SINK 0.6 SOURCE 0.4 0.2 0 0.01 0.1 0.001 LOAD CURRENT (mA) Figure 31. Output Voltage to Supply Rail vs. Load Current GAIN –10 –20 100k 1M FREQUENCY (Hz) Figure 32. Open-Loop Gain and Phase Shift vs. Frequency 120 100 100 –20 –40 –60 – ...

Page 11

... V = ± 10kΩ 180 –100 V 160 V = 200mV IN 140 120 100 Rev Page OP1177/OP2177/OP4177 V = ± INPUT R = 10kΩ L OUTPUT TIME (200µs/DIV) Figure 40. No Phase Reversal V = ±5V SY 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 41. CMRR vs. Frequency V = ±5V SY –PSRR +PSRR 100 1k 10k 100k ...

Page 12

... OP1177/OP2177/OP4177 V = ±5V SY TIME (1s/DIV) Figure 43. 0 Input Voltage Noise ± 100 150 FREQUENCY (Hz) Figure 44. Voltage Noise Density vs. Frequency – – TEMPERATURE (°C) Figure 45. Short-Circuit Current vs. Temperature 4.40 4.35 4.30 4.25 4.20 4.15 4.10 4.05 4.00 – –50 200 250 600 V = ±5V ...

Page 13

... T = 25°C A 400 350 300 250 200 150 100 SUPPLY VOLTAGE (V) Figure 49. Supply Current vs. Supply Voltage 0 –20 –40 –60 –80 –100 –120 –140 –160 Figure 50. Channel Separation vs. Frequency Rev Page OP1177/OP2177/OP4177 100 1k 10k 100k 1M FREQUENCY (Hz) ...

Page 14

... This is especially true for circuits with high closed-loop gains. The OP1177 has excellent gain linearity even with heavy loads, as shown in Figure 51. Compare its performance to the OPA277, shown in Figure 52. Both devices are measured under identical conditions, with R distortion at lower voltages ...

Page 15

... V. This is beyond the output voltage range of the OPx177 when operating at ±15 V supplies and forces the output into saturation. Recovery time is important in many applications, particularly where the operational amplifier must amplify small signals in the presence of large transient voltages. Rev Page OP1177/OP2177/OP4177 V = 10V ...

Page 16

... Figure 18 shows the positive overload recovery time of the OP1177. The output recovers in less than 4 μs after being overdriven by more than 100%. The negative overload recovery of the OP1177 is 1.4 μs, as seen in Figure 19. THD + NOISE The OPx177 has very low total harmonic distortion. This indicates excellent gain linearity and makes the OPx177 a great choice for high closed-loop gain precision circuits ...

Page 17

... R 6 where: V OUT a is the open-loop gain of the amplifier the frequency at which the phase Φ 2 Rev Page OP1177/OP2177/OP4177 – OP1177 V– Figure 60. Compensation Using Feedback Capacitor – 6 OP1177 V– Figure 61. EMI Reduction ⎛ + ⎞ − ⎜ ⎟ ⎝ ⎠ OP1177 – ...

Page 18

... The use of a ground plane is highly recommended. A ground plane reduces EMI noise and also helps to maintain a constant temperature across the circuit board. DIFFERENCE AMPLIFIERS Difference amplifiers are used in high accuracy circuits to improve the common-mode rejection ratio (CMRR). R2 100kΩ OP1177 3 4 V– Figure 63. Difference Amplifier ...

Page 19

... V output. The circuit achieves better than ±0.5°C accuracy after adjustment. Rev Page 200kΩ 0.1µF 80.6kΩ R6 10µF 50Ω 1kΩ OP1177 OUT 3 R5 100Ω 10µF 4 10µF R4 50Ω 0.1µF V– until the output is zero. P ...

Page 20

... V– Figure 65. Low Power Linearized RTD Circuit SINGLE OPERATIONAL AMPLIFIER BRIDGE The low input offset voltage drift of the OP1177 makes it very effective for bridge amplifier circuits used in RTD signal condi- tioning often more economical to use a single bridge operational amplifier as opposed to an instrumentation amplifier. ...

Page 21

... V1 50mV V– – Figure 68. Channel Separation Test Circuit REFERENCES ON NOISE DYNAMICS AND FLICKER NOISE S. Franco, Design with Operational Amplifiers and Analog Integrated Circuits. McGraw-Hill, 1998. Analog Devices, Inc., 1991. Analog Devices, Inc., 1991. Rev Page OP1177/OP2177/OP4177 C3 680pF 1 OP2177 33kΩ 33kΩ ...

Page 22

... OP1177/OP2177/OP4177 OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° 0° 0.51 (0.0201) ...

Page 23

... MAX 0.15 0.30 SEATING 0.05 0.19 COPLANARITY PLANE 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 72. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters Rev Page OP1177/OP2177/OP4177 0.80 8° 0.60 0° 0.40 0.75 8° 0.60 0° 0.45 ...

Page 24

... OP1177AR-REEL7 −40°C to +125°C 1 OP1177ARZ −40°C to +125°C 1 OP1177ARZ-REEL −40°C to +125°C 1 OP1177ARZ-REEL7 −40°C to +125°C OP1177ARM-R2 −40°C to +125°C OP1177ARM-REEL −40°C to +125°C 1 OP1177ARMZ-R2 −40°C to +125°C 1 OP1177ARMZ-REEL −40°C to +125°C OP2177AR − ...

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