ANALOG DEVICES OP2177, OP4177 Service Manual

ⴚIN A
ⴙIN A

Vⴚ

OUT B
–IN B
+IN B

V+

1

45

8

OP2177

OUT A

查询OP1177供应商

Precision Low Noise, Low Input

a

FEATURES
Low Offset Voltage: 60 ␮V Max
Very Low Offset Voltage Drift: 0.7 ␮V/ⴗC Max
Low Input Bias Current: 2 nA Max

√

Low Noise: 8 nV/
CMRR, PSRR, and A
Low Supply Current: 400 ␮A/Amp
Dual Supply Operation: ⴞ2.5 V to ⴞ15 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
RTDs
Strain Bridges
Shunt Current Measurements

Precision Filters

Hz

> 120 dB Min

VO

Bias Current Operational Amplifiers

OP1177/OP2177/OP4177

FUNCTIONAL BLOCK DIAGRAM

8-Lead MSOP

(RM-Suffix)

1

NC

ⴚIN

OP1177

ⴙIN

Vⴚ

45

NC = NO CONNECT

8-Lead MSOP

(RM-Suffix)

8

NC
V+
OUT

NC

8-Lead SOIC

(R-Suffix)

NC

1

ⴚIN

2

+IN

3

Vⴚ

4

NC = NO CONNECT

8-Lead SOIC

(R-Suffix)

OUT A

1

ⴚIN A

2

3

+IN A

4

Vⴚ

OP1177

OP2177

NC

8

V+

7

OUT

6

NC

5

V+

8

7

OUT B

6

ⴚIN B

+IN B

5

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 con­sumption. Outputs are stable with capacitive loads of over
1,000 pF with no external compensation. Supply current is less
than 500 µA per amplifier at 30 V. Internal 500 Ω series resis-
tors 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 and OP2177 are available in the tiny MSOP 8-lead sur­face-mount package, while the OP4177 is available in TSSOP14.
Moreover, specified performance in the MSOP/TSSOP package is
identical to performance in the SOIC package.

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

14-Lead TSSOP

(RU-Suffix)

OUT A

–IN A
+IN A

+IN B
–IN B

OUT B

1

OP4177

V+

7

OUT D

14

–IN D
+IN D
V–
+IN C
–IN C

8

OUT C

OUT A

ⴚIN A

+IN A

+IN B

ⴚIN B

OUT B

1

2

3

4

V+

5

6

7

14-Lead SOIC

(R-Suffix)

OP4177
OP4177

OUT D

14

ⴚIN D

13

+IN D

12

Vⴚ

11

+IN C

10

9

ⴚIN C

8

OUT C

and controls—thermocouple, RTD, strain-bridge, and other
sensor signal conditioning—and precision filters.

The OP1177 (single) and the OP2177 (dual) amplifiers are
available in the 8-lead MSOP and 8-lead SOIC packages. The
OP4177 (quad) is available in 14-lead narrow SOIC and 14-lead
TSSOP packages. MSOP and TSSOP packages are available in
tape and reel only.

REV. B

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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]www.analog.com
Fax: [phone] © Analog Devices, Inc., 2002

(@ VS = ⴞ5.0 V, VCM = 0 V, TA = 25ⴗC, unless

OP1177/OP2177/OP4177–SPECIFICATIONS

otherwise noted.)

Parameter Symbol Conditions Min Typ* Max Unit

INPUT CHARACTERISTICS

Offset Voltage

OP1177 V
OP2177/4177 V
OP1177/2177 V

OP4177 V
Input Bias Current I
Input Offset Current I

B

OS

OS

OS

OS

OS

–40°C < TA < +125°C 25 100 µV
–40°C < TA < +125°C 25 120 µV
–40°C < TA < +125°C –2 +0.5 +2 nA
–40°C < TA < +125°C –1 +0.2 +1 nA

15 60 µV
15 75 µV

Input Voltage Range –3.5 +3.5 V
Common-Mode Rejection Ratio CMRR V

Large Signal Voltage Gain A

VO

= –3.5 V to +3.5 V 120 126 dB

CM

–40°C < T

< +125°C 118 125 dB

A

RL = 2 kΩ , VO = –3.5 V to +3.5 V 1,000 2,000 V/mV

Offset Voltage Drift

OP1177/OP2177 ∆V

/∆T –40°C < TA < +125°C 0.2 0.7 µV/°C

OS

OP4177 ∆VOS/∆T –40°C < TA < +125°C 0.3 0.9 µV/°C

OUTPUT CHARACTERISTICS

Output Voltage High V
Output Voltage Low V
Output Current I

OH

OL

OUT

IL = 1 mA, –40°C < TA < +125°C +4 +4.1 V
IL = 1 mA, –40°C < TA < +125°C –4.1 –4 V
V

DROPOUT

< 1.2 V ±10 mA

POWER SUPPLY

Power Supply Rejection Ratio

OP1177 PSRR V

OP2177/OP4177 PSRR V

Supply Current/Amplifier I

SY

= ±2.5 V to ±15 V, 120 130 dB

S

–40°C < T

= ±2.5 V to ±15 V, 118 121 dB

S

–40°C < T

< +125°C 115 125 dB

A

< +125°C 114 120 dB

A

VO = 0 V 400 500 µA
–40°C < TA < +125°C 500 600 µA

DYNAMIC PERFORMANCE

Slew Rate SR R

= 2 kΩ 0.7 V/µs

L

Gain Bandwidth Product GBP 1.3 MHz

NOISE PERFORMANCE

Voltage Noise en p-p 0.1 Hz to 10 Hz 0.4 µV p-p
Voltage Noise Density e
Current Noise Density i

n

n

f = 1 kHz 7.9 8.5 nV/√Hz
f = 1 kHz 0.2 pA/√Hz

MULTIPLE AMPLIFIERS
CHANNEL SEPARATION C

S

DC 0.01 µV/V
f = 100 kHz –120 dB

*Typical values cover all parts within one standard deviation of the average value. Average values, given in many competitors ’ data sheets as “typical,” give unrealistically

low estimates for parameters that can have both positive and negative values.

Specifications subject to change without notice.

–2–

REV. B

OP1177/OP2177/OP4177

ELECTRICAL CHARACTERISTICS

(@ VS = ⴞ15 V, VCM = 0 V, TA = 25ⴗC, unless otherwise noted.)

Parameter Symbol Conditions Min Typ* Max Unit

INPUT CHARACTERISTICS

Offset Voltage

OP1177 V
OP2177/OP4177 V
OP1177/OP2177 V

OP4177 V
Input Bias Current I
Input Offset Current I

B

OS

OS

OS

OS

OS

–40°C < TA < +125°C 25 100 µV
–40°C < TA < +125°C 25 120 µV
–40°C < TA < +125°C –2 +0.5 +2 nA
–40°C < TA < +125°C –1 +0.2 +1 nA

15 60 µV
15 75 µV

Input Voltage Range –13.5 +13.5 V
Common-Mode Rejection Ratio CMRR V

Large Signal Voltage Gain A

VO

= –13.5 V to +13.5 V

CM

–40°C < T

< +125°C 120 125 dB

A

RL = 2 kΩ , VO = –13.5 V to +13.5 V 1,000 3,000 V/mV

Offset Voltage Drift

OP1177/OP2177 ∆V

/∆T –40°C < TA < +125°C 0.2 0.7 µV/°C

OS

OP4177 ∆VOS/∆T –40°C < TA < +125°C 0.3 0.9 µV/°C

OUTPUT CHARACTERISTICS

Output Voltage High V
Output Voltage Low V
Output Current I
Short Circuit Current I

OH

OL

OUT

SC

IL = 1 mA, –40°C < TA < +125°C +14 +14.1 V
IL = 1 mA, –40°C < TA < +125°C –14.1 –14 V
V

DROPOUT

< 1.2 V ±10 mA

±35 mA

POWER SUPPLY

Power Supply Rejection Ratio

OP1177 PSRR V

OP2177/OP4177 PSRR V

Supply Current/Amplifier I

SY

= ±2.5 V to ±15 V, 120 130 dB

S

–40°C < T

= ±2.5 V to ±15 V, 118 121 dB

S

–40°C < T

< +125°C 115 125 dB

A

< +125°C 114 120 dB

A

VO = 0 V 400 500 µA
–40°C < TA < +125°C 500 600 µA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 0.7 V/µs
Gain Bandwidth Product GBP 1.3 MHz

NOISE PERFORMANCE

Voltage Noise en p-p 0.1 Hz to 10 Hz 0.4 µV p-p
Voltage Noise Density e
Current Noise Density i

n

n

f = 1 kHz 7.9 8.5 nV/√Hz
f = 1 kHz 0.2 pA/√Hz

MULTIPLE AMPLIFIERS
CHANNEL SEPARATION C

S

DC 0.01 µV/V
f = 100 kHz –120 dB

*Typical values cover all parts within one standard deviation of the average value. Average values, given in many competitors ’ data sheets as “typical,” give unrealistically

low estimates for parameters that can have both positive and negative values.

Specifications subject to change without notice.

REV. B

–3–

OP1177/OP2177/OP4177

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V

S–

to V

S+

Differential Input Voltage . . . . . . . . . . . . . . ±Supply Voltage

Storage Temperature Range

R, RM, and RU Packages . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

OP1177/OP2177/OP4177 . . . . . . . . . . . –40°C to +125°C

Junction Temperature Range

R, RM, and RU Packages . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering, 10 sec) . . . . . . . 300°C

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute maximum rating condi­tions for extended periods may affect device reliability.

ORDERING GUIDE

Temperature Package Package Branding

Model Range Description Option Information

OP1177ARM –40°C to +125°C 8-Lead MINI_SOIC RM-8 AZA
OP1177AR –40°C to +125°C 8-Lead SOIC SO-8
OP2177ARM –40°C to +125°C 8-Lead MINI_SOIC RM-8 B2A
OP2177AR –40°C to +125°C 8-Lead SOIC SO-8
OP4177AR –40°C to +125°C 14-Lead SOIC R-14
OP4177ARU –40°C to +125°C 14-Lead TSSOP RU-14

Package Type ␪

8-Lead MSOP (RM)

2

1

JA

␪

JC

Unit

190 44 °C/W
8-Lead SOIC (R) 158 43 °C/W
14-Lead SOIC (R) 120 36 °C/W
14-Lead TSSOP (RU) 240 43 °C/W

NOTES

1

θJA is specified for worst-case conditions, i.e., θ

in circuit board for surface-mount packages.

2

MSOP is only available in tape and reel.

is specified for device soldered

JA

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the OP1177/OP2177/OP4177 features proprietary ESD protection circuitry, permanent damage
may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

–4–

REV. B

Typical Performance Characteristics–

OP1177/OP2177/OP4177

50

VSY = ⴞ15V

45

40

35

30

25

20

15

NUMBER OF AMPLIFIERS

10

5

0

ⴚ30 ⴚ20 ⴚ10

ⴚ40

INPUT OFFSET VOLTAGE – ␮V

02030

10

40

TPC 1. Input Offset Voltage
Distribution

1.8

VSY = ⴞ15V

1.6
T

= 25ⴗC

A

1.4

1.2

1.0

SOURCE

0.8

0.6

⌬OUTPUT VOLTAGE – V

0.4

0.2

SINK

0

0.001 0.01 10

0.1 1

LOAD CURRENT – mA

TPC 4. Output Voltage to Supply
Rail vs. Load Current

90

80

70

60

50

40

30

20

NUMBER OF AMPLIFIERS

10

0

0.05

0.15 0.25 0.35
TCVOS – ␮V/ⴗC

VSY = ⴞ15V

0.45 0.55

TPC 2. Input Offset Voltage
Drift Distribution

INPUT BIAS CURRENT – nA

ⴚ1

ⴚ2

ⴚ3

3

2

1

0

ⴚ50

0 50 100

TEMPERATURE – ⴗC

VSY = ⴞ15V

TPC 5. Input Bias Current vs.
Temperature

150

140

VSY = ⴞ15V

120

100

80

60

40

NUMBER OF AMPLIFIERS

20

0

0.1 0.2 0.3 0.5

00.4
INPUT BIAS CURRENT – nA

0.6

0.7

TPC 3. Input Bias Current
Distribution

60

50

40

30

GAIN

20

10

OPEN-LOOP GAIN – dB

0

ⴚ10

ⴚ20

100k 1M 10M

FREQUENCY – Hz

VSY = ⴞ15V

= 0

C

L

=

R

L

PHASE

TPC 6. Open-Loop Gain and
Phase Shift vs. Frequency

0

45

90

135

180

PHASE SHIFT – Degrees

120

100

80

60

= 100

A

V

40

AV = 10

20

0

AV = 1

ⴚ20

CLOSED-LOOP GAIN – dB

ⴚ40

ⴚ60

ⴚ80

1k 10k 100M

100k 1M 10M

FREQUENCY – Hz

VSY = ⴞ15V

= 4mV p-p

V

IN

= 0

C

L

=

R

L

TPC 7. Closed-Loop Gain vs.
Frequency

500

450

400

350

300

250

200

150

OUTPUT IMPEDANCE – ⍀

100

50

0

100 1k 10k

A

FREQUENCY – Hz

= 100

V

AV = 10

VSY = ⴞ15V

= 50mV p-p

V

IN

AV = 1

100k 1M

TPC 8. Output Impedance vs.
Frequency

VSY = ⴞ15V
C

= 300pF

L

= 2k⍀

R

L

= 4V

V

IN

A

= 1

V

VOLTAGE – 1V/DIV

GND

TIME – 100␮s/DIV

TPC 9. Large Signal Transient
Response

REV. B

–5–

OP1177/OP2177/OP4177

k

VSY = ⴞ15V
C

= 1,000pF

L

= 2k⍀

R

L

= 100mV

V

IN

A

= 1

V

GND

VOLTAGE – 100mV/DIV

TIME – 100␮s/DIV

TPC 10. Small Signal Transient
Response

15V

0V

OUTPUT

VSY = ⴞ15V

= 10k⍀

R

L

A

= ⴚ100

V

= 200mV

V

IN

0V

50

VSY = ⴞ15V

45

R

= 2k⍀

L

= 100mV p-p

V

IN

40

35

30

25

20

15

10

SMALL SIGNAL OVERSHOOT – %

5

0

110 10

CAPACITANCE – pF

100

+OS

ⴚOS

1k

TPC 11. Small Signal Overshoot vs.
Load Capacitance

CMRR – dB

140

120

100

80

60

40

VSY = ⴞ15V

VSY = ⴞ15V

= 10k⍀

R

L

= ⴚ100

A

V

V

= 200mV

0V

IN

ⴚ15V

OUTPUT

+200mV

0V

INPUT

TIME – 10␮s/DIV

TPC 12. Positive Overvoltage
Recovery

PSRR – dB

140

120

100

80

60

40

+PSRR

VSY = ⴞ15V

ⴚPSRR

ⴚ200mV

INPUT

TIME – 4␮s/DIV

TPC 13. Negative Overvoltage
Recovery

VSY = ⴞ15V

– 0.2␮V/DIV

NOISE

V

TIME – 1s/DIV

TPC 16. 0.1 Hz to 10 Hz Input
Voltage Noise

20

0

100 1k 100k 1M

10 10k 10M

FREQUENCY – Hz

TPC 14. CMRR vs. Frequency

18

VSY = ⴞ15V

16

14

12

10

8

6

4

VOLTAGE NOISE DENSITY – nV/ Hz

2

0 25050 100 150 200

FREQUENCY – Hz

TPC 17. Voltage Noise Density

20

0

100 1k 100k 1M

10 10k 10M

FREQUENCY – Hz

TPC 15. PSRR vs. Frequency

SHORT CIRCUIT CURRENT – mA

35

30

25

20

15

10

5

0

ⴚ50

ⴙI

SC

ⴚI

SC

0 50 100

TEMPERATURE – ⴗC

V

SY

= ⴞ15V

TPC 18. Short Circuit Current vs.
Temperature

150

–6–

REV. B