ANALOG DEVICES ADA4610-2 Service Manual

JFET Dual Operational Amplifier

Data Sheet

ADA4610-2

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

Trademarks and registered trademarks are the property of their respective owners.

Fax: [phone] ©2011–2012 Analog Devices, Inc. All rights reserved.

NOTES

1. THE EXPOSED PAD MUST BE
CONNECTED TO V –.

1OUT A
2–IN

A

3+IN A
4V–

7 OUT B

8 V+

6 –IN B
5 +IN B

09646-001

PIN 1
INDICATOR

ADA4610-2

TOP VIEW

(Not to S cale)

09646-002

OUT A

1

–IN A

2

+IN A

3

V–

4

V+

8

OUT B

7

–IN B

6

+IN B

5

ADA4610-2

TOP VIEW

(Not to S cale)

FEATURES

Low offset voltage

B grade: 0.4 mV maximum
A grade: 1 mV maximum

Low offset voltage drift

B grade: 4 µV/°C maximum

A grade: 8 µV/°C maximum
Low input bias current: 5 pA typical at V
Dual-supply operation: ±4.5 V to ±15 V
Low noise

7.3 nV/√Hz typical at f = 1 kHz

0.45 µV p-p at 0.1 Hz to 10 Hz
Low distortion: 0.00006%
No phase reversal
Rail-to-rail output
Unity gain stable

APPLICATIONS

Instrumentation
Medical instruments
Multipole filters
Precision current measurement
Photodiode amplifiers
Sensors
Audio

= ±15 V

SY

Low Noise, Precision, Rail-to-Rail Output,

PIN CONFIGURATIONS

Figure 1. 8-Lead LFCSP (CP Suffix)

Figure 2. 8-Lead SOIC_N (R Suffix) and 8-Lead MSOP (RM Suffix)

GENERAL DESCRIPTION

The ADA4610-2 is a dual channel, precision JFET amplifier
that features low input voltage and current noise, offset voltage,
input bias current, and rail-to-rail output.

The combination of low offset, noise, and very low input
bias current makes these amplifiers especially suitable for
high impedance sensor amplification and precise current
measurements using shunts. With excellent dc precision, low
noise, and fast settling time, the ADA4610-2 provides superior
accuracy in medical instruments, electronic measurement, and
automated test equipment. Unlike many competitive amplifiers,
the ADA4610-2 maintains fast settling performance with
substantial capacitive loads. Unlike many older JFET amplifiers,
the ADA4610-2 does not suffer from output phase reversal
when input voltages exceed the maximum common-mode
voltage range.

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

The fast slew rate and great stability with capacitive loads make
the ADA4610-2a perfect fit for high performance filters. Low
input bias currents, low offset, and low noise result in a wide
dynamic range for photodiode amplifier circuits. Low noise
and distortion, high output current, and excellent speed make
the ADA4610-2 a great choice for audio applications.

The ADA4610-2 is specified over the −40°C to +125°C
extended industrial temperature range.

The ADA4610-2 is available in the 8-lead narrow SOIC, 8-lead
MSOP, and 8-lead LFCSP packages.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]

www.analog.com

ADA4610-2 Data Sheet

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

Pin Configurations ........................................................................... 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Specifications ..................................................................................... 3

Electrical Characteristics ............................................................. 4

Absolute Maximum Ratings ............................................................ 6

REVISION HISTORY

5/12—Rev. 0 to Rev. A

Changes to Data Sheet Title and General Description Section .. 1
Changed Input Impedance, Differential to Input Capacitance,

Differential in Table 1 ....................................................................... 3

Added Input Resistance in Table 1 ................................................. 3

Changed Input Impedance, Differential to Input Capacitance,

Differential in Table 2....................................................................... 4

Added Input Resistance in Table 2 ................................................. 4

Added Figure 9, Figure 10, and Figure 14 ..................................... 8

Added Figure 15 ................................................................................ 9

Updated Outline Dimensions ....................................................... 16

Changes to Ordering Guide .......................................................... 17

12/11—Revision 0: Initial Version

ESD Caution...................................................................................6

Typical Performance Characteristics ..............................................7

Comparative Voltage and Variable Voltage Graphs ............... 13

Applications Information .............................................................. 15

Comparator Operation .............................................................. 15

Outline Dimensions ....................................................................... 16

Ordering Guide .......................................................................... 17

Rev. A | Page 2 of 20

Data Sheet ADA4610-2

Offset Voltage Drift (A Grade)2

ΔVOS/ΔT

1 8 µV/°C

Output Voltage High

VOH

RL = 2 kΩ

4.85

4.90 V

Voltage Noise

en p-p

0.1 Hz to 10 Hz

0.45 μV p-p

SPECIFICATIONS

VSY = ±5 V, VCM = 0 V, TA = 25°C, unless otherwise noted.

Table 1.

Parameter Symbol Test Conditions/Comments Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage (B Grade)1 VOS 0.2 0.4 mV

−40°C < TA < +125°C 0.8 mV
Offset Voltage (A Grade)1 VOS 0.4 1 mV

−40°C < TA < +125°C 1.8 mV
Offset Voltage Drift (B Grade)2 ΔVOS/ΔT 0.5 4 µV/°C

Input Bias Current IB 5 25 pA

−40°C < TA < +125°C 1.5 nA
Input Offset Current IOS 2 20 pA

−40°C < TA < +125°C 0.25 nA
Input Voltage Range −2.5 +2.5 V
Common-Mode Rejection Ratio CMRR VCM = −2.5 V to +2.5 V 94 110 dB

−40°C < TA < +125°C 86 dB
Large Signal Voltage Gain AVO RL = 2 kΩ, V

−40°C < TA < +125°C 86 dB
Input Capacitance, Differential VCM = 0 V 3.1 pF
Input Capacitance, Common-Mode VCM = 0 V 4.8 pF
Input Resistance VCM = 0 V >1 × 1013 Ω

OUTPUT CHARACTERISTICS

= −3.5 V to +3.5 V 98 100 dB

OUT

−40°C < TA < +125°C 4.6 V
RL = 600 Ω 4.6 4.89 V

−40°C < TA < +125°C 4.05 V
Output Voltage Low VOL RL = 2 kΩ −4.95 −4.9 V

−40°C < TA < +125°C −4.75 V
RL = 600 Ω −4.9 −4.8 V

−40°C < TA < +125°C −4.4 V
Short-Circuit Current I

±63 mA

SC

POWER SUPPLY

Power Supply Rejection Ratio PSRR VSY = ±4.5 V to ±18 V 106 125 dB

−40°C < TA < +125°C 103 dB
Supply Current/Amplifier IS I

= 0 mA 1.5 1.7 mA

OUT

−40°C < TA < +125°C 1.85 mA

DYNAMIC PERFORMANCE

Gain Bandwidth Product GBP VIN = 5 mV p-p, RL = 2 kΩ, AV = 100 15.4 MHz
Unity-Gain Crossover UGC VIN = 5 mV p-p, RL = 2 kΩ, AV = −10 9.3 MHz
Phase Margin φ

M

61 Degrees

−3 dB Closed-Loop Bandwidth −3 dB AV = 1, VIN = 5 mV p-p 10.6 MHz

NOISE PERFORMANCE

Voltage Noise Density en f = 10 Hz 14 nV/√Hz

f = 100 Hz 8.2 nV/√Hz
f = 1 kHz 7.3 nV/√Hz
f = 10 kHz 7.3 nV/√Hz

1

Offset voltage does not include solder heat resistance.

2

Guaranteed by design and characterization.

Rev. A | Page 3 of 20

ADA4610-2 Data Sheet

Offset Voltage Drift (B Grade)2

ΔVOS/ΔT

0.5 4 µV/°C

−40°C < TA < +125°C

0.25

nA

OUTPUT CHARACTERISTICS

Output Voltage Low

VOL

RL = 2 kΩ

−14.9

−14.85

V

−40°C < TA < +125°C

2.0

mA

ELECTRICAL CHARACTERISTICS

VSY = ±15 V, VCM = 0 V, TA = 25°C, unless otherwise noted.

Table 2.

Parameter Symbol Test Conditions/Comments Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage (B Grade)1 VOS 0.2 0.4 mV

−40°C < TA < +125°C 0.8 mV
Offset Voltage (A Grade)1 VOS 0.4 1 mV

−40°C < TA < +125°C 1.8 mV

Offset Voltage Drift (A Grade)2 ΔVOS/ΔT 1 8 µV/°C
Input Bias Current IB 5 25 pA

−40°C < TA < +125°C 1.5 nA
Input Offset Current IOS 2 20 pA

Input Voltage Range −12.5 +12.5 V
Common-Mode Rejection Ratio CMRR VCM = −12.5 V to +12.5 V 100 115 dB

−40°C < TA < +125°C 96 dB
Large Signal Voltage Gain AVO RL = 2 kΩ, V

−40°C < TA < +125°C 91 dB

Input Capacitance, Differential VCM = 0 V 3.1 pF
Input Capacitance, Common-Mode VCM = 0 V 4.8 pF
Input Resistance VCM = 0 V >1 × 1013 Ω

= ±13.5 V 104 107 dB

OUT

Output Voltage High VOH RL = 2 kΩ 14.8 14.9 V

−40°C < TA < +125°C 14.65 V
RL = 600 Ω 14.25 14.47 V

−40°C < TA < +125°C 13.35 V

−40°C < TA < +125°C −14.75 V
RL = 600 Ω −14.68 −14.6 V

−40°C < TA < +125°C −14.3 V
Short-Circuit Current I

±79 mA

SC

POWER SUPPLY

Power Supply Rejection Ratio PSRR VSY = ±4.5 V to ±18 V 106 125 dB

−40°C < TA < +125°C 103 dB
Supply Current/Amplifier ISY I

= 0 mA 1.6 1.85 mA

OUT

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ ±172 +25/−61 V/µs
Gain Bandwidth Product GBP VIN = 5 mV p-p, RL = 2 kΩ, AV = 100 16.3 MHz
Unity-Gain Crossover UGC VIN = 5 mV p-p, RL = 2 kΩ, AV = −10 9.3 MHz
Phase Margin φM 66 Degrees

−3 dB Closed-Loop Bandwidth −3 dB AV = 1, VIN = 5 mV p-p 9.50 MHz
Total Harmonic Distortion (THD) + Noise THD + N 1 kHz, G = +1, RL = 2 kΩ, VIN = 6 V rms 0.00006 %

Rev. A | Page 4 of 20

Data Sheet ADA4610-2

f = 1 kHz

7.3 nV/√Hz

Parameter Symbol Test Conditions/Comments Min Typ Max Unit

NOISE PERFORMANCE

Peak-to-Peak Voltage Noise en p-p 0.1 Hz to 10 Hz bandwidth 0.45 µV p-p
Voltage Noise Density en f = 10 Hz 14 nV/√Hz

f = 100 Hz 8.5 nV/√Hz

f = 10 kHz 7.3 nV/√Hz

1

Offset voltage does not include solder heat resistance.

2

Guaranteed by design and characterization.

Rev. A | Page 5 of 20

ADA4610-2 Data Sheet

Electrostatic Discharge

2500 V
8-Lead SOIC_N (R-8)

120

43

°C/W

ABSOLUTE MAXIMUM RATINGS

Table 3.

Parameter Rating

Supply Voltage ±18 V
Input Voltage ±VS
Output Short-Circuit Duration to GND Observe derating curves
Storage Temperature Range −65°C to +150°C
Operating Temperature Range −40°C to +125°C
Junction Temperature Range −65°C to +150°C
Lead Temperature (Soldering, 10 sec) 300°C

(Human Body Model)

Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.

Table 4. Thermal Resistance

Package Type θ

8-Lead MSOP (RM-8) 142 45 °C/W

8-Lead LFCSP_VD (CP-8-9) 57 12 °C/W

1

θJA is specified for worst-case conditions, that is, θJA is specified for device

soldered in circuit board for surface-mount packages.

1

θ

JA

Unit

JC

ESD CAUTION

Rev. A | Page 6 of 20

Data Sheet ADA4610-2

400

350

300

250

200

150

100

50

0

–1000 –800 –600 –400 –200 0 200 400 600 800 1000 1200

OFFSET VOLTAGE (µV)

NUMBER OF CHANNELS

09646-003

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

SOIC

350

300

250

200

150

100

50

0

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

BIN (µV/°C)

NUMBER OF CHANNELS

09646-004

ADA4610-2
V

SY

= ±5V

SOIC

500

400

300

200

100

0

–100

–200
–300

–400

–500

–5 –4 –3 –2 –1 0 1 2 3 4 5

COMMON-MODE INPUT (V)

INPUT OFFSET VOLTAGE (µV)

09646-005

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

R

L

=

∞

400

350

300

250

200

150

100

50

0

–1000 –800 –600 –400 –200 0 200 400 600 800 1000 1200

OFFSET VOLTAGE (µV)

NUMBER OF CHANNELS

09646-006

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

SOIC

350

400

300

250

200

150

100

50

0

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

BIN (µV/°C)

NUMBER OF CHANNELS

09646-007

ADA4610-2
V

SY

= ±15V

SOIC

500

400

300

200

100

0

–100

–200
–300

–400

–500

–15 –10 –5 0 5 10 15

COMMON-MODE INPUT (V)

INPUT OFFSET VOLTAGE (µV)

09646-008

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

R

L

=

∞

TYPICAL PERFORMANCE CHARACTERISTICS

TA = 25°C, unless otherwise noted.

Figure 3. Input Offset Voltage Distribution

Figure 4. TCVOS Distribution

Figure 6. Input Offset Voltage Distribution

Figure 7. TCVOS Distribution

Figure 5. Input Offset Voltage vs. Common-Mode Input Voltage

Figure 8. Input Offset Voltage vs. Common-Mode Input Voltage

Rev. A | Page 7 of 20

ADA4610-2 Data Sheet

1M

1

–5 –4 –3 –2 –1 0 1 2 3 4 5

INPUT BIAS A, INPUT BIAS B ( pA)

V

CMI

(V)

09646-055

10

100

1k

10k

100k

ADA4610-2
SOIC
V

SY

= ±15V

R

L

=

∞

T

A

= +25°C

100M

10

1

100

1k

10k

100k

1M

10M

0.1
–5 6

INPUT BIAS A, INPUT BIAS B ( pA)

V

CMI

(V)

09646-056

ADA4610-2
SOIC
V

SY

= ±5V

R

L

=

∞

+125°C

+85°C

+25°C

–4 –3 –2 –1 0 1 2 3 4 5

–40°C

100

10

1

0.1
–50 –25 0 25 50 75 100 125

TEMPERATURE (°C)

INPUT BIAS CURRE NT (pA)

09646-009

ADA4610-2
V

SY

= ±5V

1

0.1

0.01

0.1 1 10 100
I

OUT

SOURCE (mA)

V

DD

– V

OUT

(V)

09646-011

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

0.1 1 10 100
I

OUT

SINK (mA)

09646-015

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

10

1

0.1

0.01

V

OUT

– V

SS

(V)

100

80

90

10

20

30

40

50

60

70

0

–15 –10 10–5 50 15

INPUT BIAS CURRE NT (pA)

COMMON-MODE VOLTAGE (V)

09646-057

ADA4610-2
SOIC
V

SY

= ±15V

R

L

=

∞

T

A

= +25°C

Figure 9. Input Bias Current vs. Common Mode Voltage

Figure 10. Input Bias Current vs. Common Mode Voltage and Temperature

Figure 12. Dropout Voltage vs. Source Current

Figure 13. Dropout Voltage vs. Sink Current

Figure 11. Input Bias Current vs. Temperature

Figure 14. Input Bias Current vs. Common-Mode Voltage

Rev. A | Page 8 of 20

Data Sheet ADA4610-2

1G

100M

10

100

1k

10k

100k

1M

10M

1

–15 –10 10–5 50 15

INPUT BIAS CURRE NT (pA)

COMMON-MODE VOLTAGE (V)

09646-058

+125°C

ADA4610-2
SOIC
V

SY

= ±15V

R

L

=

∞

+85°C

+25°C

–40°C

100

10

1

0.1
–50 –25 0 25 50 75 100 125

TEMPERATURE (°C)

INPUT BIAS CURRE NT (pA)

09646-012

ADA4610-2
V

SY

= ±15V

0.01

0.1 1 10 100
I

OUT

SOURCE (mA)

09646-014

1

0.1

0.01

V

DD

– V

OUT

(V)

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

10

1

0.1

0.01

10.10.01 10 100

I

OUT

SINK (mA)

V

OUT

– V

SS

(V)

09646-018

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

120 270

225

180

135

90

45

0

–45

–90

100

80

60

40

20

0

–20

–40

0.01 0.1 1 10 100 1k 10k 100k

FREQUENCY ( kHz )

GAIN (dB)

PHASE (Degrees)

09646-016

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

R

L

= 2kΩ

60

40

20

0

–20

–40

1 10 100 1k 10k 100k

FREQUENCY ( kHz )

GAIN (dB)

09646-017

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

A

V

= +100

AV = +10

AV = +1

Figure 15. Input Bias Current vs. Common-Mode Voltage and Temperature

Figure 18. Dropout Voltage vs. Sink Current

Figure 16. Input Bias Current vs. Temperature

Figure 17. Dropout Voltage vs. Source Current

Figure 19. Open-Loop Gain and Phase vs. Frequency

Figure 20. Closed-Loop Gain vs. Frequency

Rev. A | Page 9 of 20

ADA4610-2 Data Sheet

1k

100

10

1

0.1

0.01

10.1 10 100 1k 10k 100k
FREQUENCY ( kHz )

Z

OUT

(Ω)

09646-021

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

A

V

= +100

A

V

= +10

A

V

= +1

120 270

GAIN (dB)

60

40

20

0

–20

–40

1 10 100 1k 10k 100k

FREQUENCY ( kHz )

GAIN (dB)

09646-020

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

A

V

= +100

A

V

= +10

A

V

= +1

1k

100

10

1

0.1

0.01

10.1 10 100 1k 10k 100k
FREQUENCY ( kHz )

Z

OUT

(Ω)

09646-024

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

AV = +100

A

V

= +10

A

V

= +1

120

100

80

60

40

20

0

–20

10.1

10 100 1k 10k

FREQUENCY ( kHz )

PSRR (dB)

09646-022

PSRR–

PSRR+

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

120

140

100

80

60

40

20

0

10.1 10 100 1k 10k
FREQUENCY ( kHz )

CMRR (dB)

09646-023

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

Figure 21. Closed-Loop Output Impedance vs. Frequency

ADA4610-2

= ±15V

V

100

80

60

40

20

0

–20

–40

0.01 0.1 1 10 100 1k 10k 100k

FREQUENCY ( kHz )

SY

T

A

R

L

= 25°C

= 2kΩ

Figure 22. Open-Loop Gain and Phase vs. Frequency

225

180

135

90

45

0

–45

–90

Figure 24. Closed-Loop Output Impedance vs. Frequency

PHASE (Degrees)

09646-019

Figure 25. PSRR vs. Frequency

Figure 23. Closed-Loop Gain vs. Frequency

Figure 26. CMRR vs. Frequency

Rev. A | Page 10 of 20

Data Sheet ADA4610-2

3

2

1

0

–1

–2

–3

0 1 2 3

4 5 6 7 8 9 10

TIME (µs)

OUTPUT VOLTAGE (V)

09646-027

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

C

L

= 100pF

120

100

80

60

40

20

0

–20

10.1 10 100 1k 10k
FREQUENCY ( kHz )

PSRR (dB)

09646-025

PSRR–

PSRR+

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

120

140

100

80

60

40

20

0

10.1 10 100 1k 10k
FREQUENCY ( kHz )

CMRR (dB)

09646-026

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

12

8

4

0

–4

–8

–12

0 1 2 3 4 5 6 7 8 9 10

TIME (µs)

OUTPUT VOLTAGE (V)

09646-030

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

C

L

= 100pF

75

50

25

0

–25

–50

–75

0 1 2 3 4 5 6 7 8 9 10

TIME (µs)

OUTPUT VOLTAGE (mV)

09646-028

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

C

L

= 100pF

100

VOLTAGE NOISE DENSITY (nV/ Hz)

Figure 27. Large Signal Transient Response

Figure 28. PSRR vs. Frequency

Figure 30. Large Signal Transient Response

Figure 31. Small Signal Transient Response

ADA4610-2

= ±5V

V

SY

= 25°C

T

A

Figure 29. CMRR vs. Frequency

10

1

0.001 0.01 0.1 1 10 100
FREQUENCY ( kHz )

09646-033

Figure 32. Voltage Noise Density

Rev. A | Page 11 of 20

ADA4610-2 Data Sheet

60

50

40

30

20

0

10

0.01 0.1 1
CAPACITANCE (nF)

OVERSHOOT (%)

09646-034

OS–

OS+

ADA4610-2
V

SY

= ±5V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

V

IN

= 100mV p-p

75

50

25

0

–25

–50

–75

0 1 2 3 4 5 6 7 8 9 10

TIME (µs)

OUTPUT VOLTAGE (mV)

09646-031

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

C

L

= 100pF

100

10

1

0.001 0.01 0.1 1 10
FREQUENCY ( kHz )

VOLTAGE NOISE DENSITY (nV/ Hz)

09646-036

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

50

45

40

35

30

0

25

20

15

10

5

0.01 0.1 1
CAPACITANCE (nF)

OVERSHOOT (%)

09646-037

OS–

OS+

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

V

IN

= 100mV p-p

Figure 33. Overshoot vs. Load Capacitance

Figure 34. Small Signal Transient Response

Figure 35. Voltage Noise Density

Figure 36. Overshoot vs. Load Capacitance

Rev. A | Page 12 of 20

Data Sheet ADA4610-2

–60

–80

–120

–140

–160

–100

–40

0.1 1 10 100
FREQUENCY ( kHz )

CHANNEL SEPARAT ION (dB)

09646-039

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

R

L

= 2kΩ

1

0.1

0.01

0.001

0.0001

0.00001

0.10.01

0.001 1 10
AMPLIT UDE ( V rms)

THD + N (%)

09646-040

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

R

L

= 2kΩ

F

IN

= 1kHz

THD + N %

0.01

0.001

0.0001

0.00001

10.10.01 10 100

FREQUENCY ( kHz )

THD + N (%)

09646-041

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

R

L

= 2kΩ

V

IN

= 5V rms

500kHz BAND-PASS FILTER

80kHz BAND-PASS FILTER

16

12

8

4

0

–4

–8

–12

–16

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

TIME (ms)

VOLTAGE (V)

09646-042

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

C

L

= 100pF

OUTPUT
INPUT

300

200

100

0

–100

–200

–300

0 1 2 3 4 5 6 7 8 9 10

TIME (sec)

VOLTAGE (nV)

09646-043

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

R

L

= 2kΩ

12

10

8

6

4

2

0

0 0.2 0.4 0.6 0.8 1.0

0.1%

0.01%

1.2 1.4

SETTLING TIME (µs)

STEP SIZE (V)

09646-044

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

C

L

= 20pF

POSITIVE STEP

COMPARATIVE VOLTAGE AND VARIABLE VOLTAGE GRAPHS

Figure 37. Channel Separation

Figure 38. THD + N vs. Amplitude

Figure 40. No Phase Reversal

Figure 41. Voltage Noise, 0.1 Hz to 10 Hz

Figure 39. THD + N vs. Frequency

Figure 42. Positive Step Settling Time

Rev. A | Page 13 of 20

ADA4610-2 Data Sheet

12

10

8

6

4

2

0

0 0.2 0.4 0.6 0.8 1.0

0.1%

0.01%

1.2 1.4

SETTLING TIME (µs)

STEP SIZE (V)

09646-045

ADA4610-2
V

SY

= ±15V

T

A

= 25°C

A

V

= +1

R

L

= 2kΩ

C

L

= 20pF

NEGATIVE STEP

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

0 5 10 15 20

+125°C

+25°C

25 30

V

SY

(V)

I

SY

FOR BOTH AMPLIFIERS (mA)

09646-047

+85°C

–40°C

ADA4610-2
R

L

=

∞

Figure 43 Negative Step Settling Time

Figure 44. Supply Current vs. Supply Voltage and Temperature

Rev. A | Page 14 of 20

Data Sheet ADA4610-2

8

7

6

5

4

3

2

1

0

0 4 8 12 16 20 24 28 32

SUPPLY VOLTAGE (V)

I

SY

FOR BOTH AMPLIFIERS (mA)

09646-053

COMPARATO R, V

OUT

= LOW

FOLLOWER

COMPARATO R, V

OUT

= HIGH

1++ –

D31

Q28

Q27

V

OUT

09646-054

V

EE

Q15Q14

Q13 Q17Q16Q23

Q29Q30

J1 J2

Q9

Q5

Q4

Q8

Q1

Q6

Q7

Q25

Q24

Q18

Q12

I

2

I

3

I

4

C2

C1

C3

DE1

V

IN+

V

IN–

C4

A2A1

R16

R7R6

R3

R5

R2

R10 R11

RC4

D26

R16

V

CC

DE5

DE6

DE3

DE2

DE4

APPLICATIONS INFORMATION

COMPARATOR OPERATION

Although op amps are quite different from comparators,
occasionally an unused section of a dual or a quad op amp may
be used as a comparator; however, this is not recommended for
any rail-to-rail output op amp. For rail-to-rail output op amps,
the output stage is generally a ratioed current mirror with bipolar
or MOSFET transistors. With the part operating open loop, the
second stage increases the current drive to the ratioed mirror to
close the loop. However, the second stage cannot close the loop,
which results in an increase in supply current. With the op amp
configured as a comparator, the supply current can be signifi­cantly higher (see Figure 45). Configuring an unused section as
a voltage follower with the noninverting input connected to a
voltage within the input voltage range is recommended. The

ADA4610-2 has a unique output stage design that reduces the

excess supply current, but does not entirely eliminate this effect
when the op amp is operating open loop.

Figure 45. Supply Current vs. Supply Voltage

Figure 46. Simplified Schematic

Rev. A | Page 15 of 20

ADA4610-2 Data Sheet

CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES)ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLYAND ARE NOT APPROPRIATE FOR USE IN DESIGN.

COMPLIANT TO JEDEC STANDARDS MS-012-AA

012407-A

0.25 (0.0098)

0.17 (0.0067)

1.27 (0.0500)

0.40 (0.0157)

0.50 (0.0196)

0.25 (0.0099)

45°

8°
0°

1.75 (0.0688)

1.35 (0.0532)

SEATING

PLANE

0.25 (0.0098)

0.10 (0.0040)

4

1

8 5

5.00(0.1968)

4.80(0.1890)

4.00 (0.1574)

3.80 (0.1497)

1.27 (0.0500)
BSC

6.20 (0.2441)

5.80 (0.2284)

0.51 (0.0201)

0.31 (0.0122)

COPLANARITY

0.10

COMPLIANT TO JEDEC STANDARDS MO-187-AA

6°
0°

0.80

0.55

0.40

4

8

1

5

0.65 BSC

0.40

0.25

1.10 MAX

3.20

3.00

2.80

COPLANARITY

0.10

0.23

0.09

3.20

3.00

2.80

5.15

4.90

4.65

PIN 1

IDENTIFIER

15° MAX

0.95

0.85

0.75

0.15

0.05

10-07-2009-B

OUTLINE DIMENSIONS

Figure 47. 8-Lead Standard Small Outline Package [SOIC_N]

Narrow Body (R-8)

Dimensions shown in millimeters and (inches)

Figure 48. 8-Lead Mini Small Outline Package [MSOP]

(RM-8)

Dimensions shown in millimeters

Rev. A | Page 16 of 20

Data Sheet ADA4610-2

1

EXPOSED

PAD

BOTTOM VIEW

0.50
BSC

PIN 1
INDICATOR

0.50

0.40

0.30

TOP VIEW

12° MAX

0.70 MAX

0.65TYP

0.90 MAX

0.85 NOM

0.05 MAX

0.01 NOM

0.20 REF

2.23

2.13

2.03

4

1.60

1.50

1.40

3.25

3.00 SQ

2.75

2.95

2.75 SQ

2.55

5

8

PIN 1

INDICATOR

SEATING

PLANE

0.30

0.23

0.18

0.60 MAX

0.60 MAX

FOR PROP E R CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION
SECTION OF THIS DATA SHEET.

04-06-2012-A

ADA4610-2ARMZ-RL

−40°C to +125°C

8-Lead MSOP

RM-8

A2U

ADA4610-2ARZ

−40°C to +125°C

8-Lead SOIC_N

R-8

Figure 49. 8-Lead Lead Frame Chip Scale Package [LFCSP_VD]

3 mm × 3 mm Body, Very Thin, Dual Lead

(CP-8-9)

Dimensions shown in millimeters

ORDERING GUIDE

Model1 Temperature Range Package Description Package Option Branding

ADA4610-2ACPZ-R7 −40°C to +125°C 8-Lead LFCSP_VD CP-8-9 A2U
ADA4610-2ACPZ-RL −40°C to +125°C 8-Lead LFCSP_VD CP-8-9 A2U
ADA4610-2ARMZ −40°C to +125°C 8-Lead MSOP RM-8 A2U
ADA4610-2ARMZ-R7 −40°C to +125°C 8-Lead MSOP RM-8 A2U

ADA4610-2ARZ-R7 −40°C to +125°C 8-Lead SOIC_N R-8
ADA4610-2ARZ-RL −40°C to +125°C 8-Lead SOIC_N R-8
ADA4610-2BRZ −40°C to +125°C 8-Lead SOIC_N R-8
ADA4610-2BRZ-R7 −40°C to +125°C 8-Lead SOIC_N R-8
ADA4610-2BRZ-RL −40°C to +125°C 8-Lead SOIC_N R-8

1

Z = RoHS Compliant Part.

Rev. A | Page 17 of 20

ADA4610-2 Data Sheet

NOTES

Rev. A | Page 18 of 20

Data Sheet ADA4610-2

NOTES

Rev. A | Page 19 of 20

ADA4610-2 Data Sheet

©2011–2012 Analog Devices, Inc. All rights reserved. Trademarks and

NOTES

registered trademarks are the property of their respective owners.
D09646-0-5/12(A)

Rev. A | Page 20 of 20