ANALOG DEVICES AD8661 Service Manual

Low Noise, Precision 16 V CMOS,

O

www.BDTIC.com/ADI

FEATURES

Low offset voltage: 100 μV maximum @ VS = 5 V
Low input bias current: 1 pA maximum
Single-supply operation: 5 V to 16 V
Low noise: 10 nV/√Hz
Wide bandwidth: 4 MHz
Unity-gain stable
Small package options

3 mm × 3 mm 8-lead LFCSP
8-lead MSOP and narrow SOIC
14-lead TSSOP and narrow SOIC

APPLICATIONS

Sensors
Medical equipment
Consumer audio
Photodiode amplification
ADC drivers

Rail-to-Rail Operational Amplifiers

AD8661/AD8662/AD8664

PIN CONFIGURATIONS

1

NC

AD8661

–IN

2

TOP VIEW

3

+IN

(Not to Scale)

V–

4

NC = NO CONNECT

Figure 1. AD8661, 8-Lead SOIC_N

1

OUT A

–IN A

+IN A

V–

AD8662

2

TOP VIEW

3

(Not to Scale)

4

Figure 3. AD8662, 8-Lead SOIC_N

1

OUT A

–IN A

2

AD8664

3

+IN A

+IN B

–IN B

OUT B

V+

TOP VIEW

(Not to Scale)

4

5

6

7

(R-8)

(R-8)

8

7

6

5

14

13

12

11

10

8

7

6

5

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

1NC

AD8661

2–IN

3+IN

05200-002

4V–

NC = NO CONNECT

Figure 2. AD8661, 8-Lead LFCSP_VD

(CP-8-

OUT A

1

AD8662

2

–IN A

+IN A

05200-001

V–

TOP VIEW

3

(Not to Scale)

4

Figure 4. AD8662, 8-Lead MSOP

(RM-8)

1

OUT A

–IN A

2

V+

AD8664

3

TOP VIEW

(Not to Scale)

4

5

6

7

+IN A

+IN B

–IN B

UT B

8NC

7V+

6OUT

5NC

05200-035

2)

V+

8

7

OUT B

–IN B

6

5

+IN B

OUT D

14

–IN D

13

+IN D

12

V–

11

10

+IN C

9

–IN C

8

OUT C

05200-004

GENERAL DESCRIPTION

The AD8661/AD8662/AD8664 are rail-to-rail output, single­supply amplifiers that use the Analog Devices, Inc., patented
DigiTrim® trimming technique to achieve low offset voltage.
The AD866x series features extended operating ranges, with
supply voltages up to 16 V. It also features low input bias
current, wide signal bandwidth, and low input voltage and
current noise.

The combination of low offset, very low input bias current, and

ide supply range makes these amplifiers useful in a wide

a w
variety of applications usually associated with higher priced
JFET amplifiers. Systems using high impedance sensors, such as
photodiodes, benefit from the combination of low input bias
current, low noise, low offset, and wide bandwidth. The wide
operating voltage range meets the demands of high
performance ADCs and DACs. Audio applications and medical

05200-036

Figure 5. AD8664, 14-Lead SOIC_N

-14)

(R

Figure 6. AD8664, 14-Lead TSSOP

(RU-14)

monitoring equipment can take advantage of the high input
impedance, low voltage and current noise, and wide bandwidth.

The single AD8661 is available in a narrow 8-lead SOIC
p

ackage and a very thin, dual lead, 8-lead LFCSP. The AD8661
SOIC_N package is specified over the extended industrial
temperature range of −40°C to +125°C. The AD8661
LFCSP_VD is specified over the industrial temperature range
of −40°C to +85°C. The AD8662 is available in a narrow 8-lead
SOIC package and an 8-lead MSOP, both specified over the
extended industrial temperature range of −40°C to +125°C. The
AD8664 is available in a narrow 14-lead SOIC package and a
14-lead TSSOP, both with an extended industrial temperature
range of −40°C to +125°C.

05200-037

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] ©2006 Analog Devices, Inc. All rights reserved.

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

TABLE OF CONTENTS

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

AD8661 Electrical Characteristics—LFCSP_VD Only............5

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

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

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

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

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

AD8661/AD8662/AD8664 Electrical Characteristics—

SOIC_N, MSOP, and TSSOP ...................................................... 3

AD8661/AD8662/AD8664 Electrical Characteristics—

SOIC_N, MSOP, and TSSOP ...................................................... 4

REVISION HISTORY

7/06—Rev. C to Rev. D

Added AD8664 ...................................................................Universal

Added 14-Lead SOIC_N and 14-Lead TSSOP ...............Universal

Changes to Features.......................................................................... 1

Changes to Table 1............................................................................ 3

Changes to Table 2............................................................................ 4

Changes to Table 3............................................................................ 5

Changes to Table 4............................................................................ 6

Changes to Table 5 and Table 6....................................................... 7

Changes to Figure 29...................................................................... 11

Updated Outline Dimensions....................................................... 13

Changes to Ordering Guide.......................................................... 15

5/06—Rev. B to Rev. C

hanges to Ordering Guide.......................................................... 13

C

3/06—Rev. A to Rev. B

A

dded AD8662 ...................................................................Universal

Added MSOP ......................................................................Universal

AD8661 Electrical Characteristics—LFCSP_VD Only............6

Absolute Maximum Ratings ............................................................7

Thermal Resistance.......................................................................7

ESD Caution...................................................................................7

Typical Performance Characteristics..............................................8

Outline Dimensions....................................................................... 13

Ordering Guide .......................................................................... 15

Changes to Table 1.............................................................................3

C

hanges to Table 2.............................................................................4

Changes to Table 3.............................................................................5

Changes to Table 4.............................................................................6

Changes to Table 5.............................................................................7

Updated Outline Dimensions....................................................... 13

Changes to Ordering Guide.......................................................... 13

1/06—Rev. 0 to Rev. A

dded LFCSP_VD .............................................................Universal

A

Changes to Table 1.............................................................................3

Changes to Table 2.............................................................................4

Changes to Ordering Guide.......................................................... 13

9/05—Revision 0: Initial Version

Rev. D | Page 2 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

SPECIFICATIONS

AD8661/AD8662/AD8664 ELECTRICAL CHARACTERISTICS—SOIC_N, MSOP, AND TSSOP

VS = 5.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.

Table 1.

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS V

AD8661 −40°C < TA < +85°C 1000 μV
AD8661 −40°C < TA < +125°C 1400 μV
AD8662 −40°C < TA < +125°C 1000 μV
AD8664 −40°C < TA < +125°C 1200 μV

Input Bias Current IB 0.3 1 pA

−40°C < TA < +85°C 50 pA

−40°C < TA < +125°C 300 pA
Input Offset Current IOS 0.2 0.5 pA

−40°C < TA < +85°C 20 pA

−40°C < TA < +125°C 75 pA
Input Voltage Range −0.1 +3.0 V
Common-Mode Rejection Ratio CMRR VCM = −0.1 V to +3.0 V 85 100 dB

−40°C < TA < +125°C 80 100 dB
Large Signal Voltage Gain AVO R
Offset Voltage Drift TCVOS

AD8661 −40°C < TA < +125°C 3 10 μV/°C
AD8662, AD8664 −40°C < TA < +125°C 2 9 μV/°C

OUTPUT CHARACTERISTICS

Output Voltage High VOH I

−40°C < TA < +125°C 4.80 V
Output Voltage Low VOL I

−40°C < TA < +125°C 110 mV
Short-Circuit Current ISC ±19 mA
Closed-Loop Output Impedance Z

POWER SUPPLY

Supply Current per Amplifier ISY V

−40°C < TA < +125°C 2.0 mA
DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 3.5 V/μs
Gain Bandwidth Product GBP 4 MHz
Phase Margin ΦO 65 Degrees

NOISE PERFORMANCE

Peak-to-Peak Noise en p-p f = 0.1 Hz to 10 Hz 2.5 μV p-p
Voltage Noise Density e
f = 10 kHz 10 nV/√Hz
Current Noise Density i

f = 1 MHz, AV = 1 50 Ω

OUT

n

n

= VS/2 30 100 μV

CM

= 2 kΩ, VO = 0.5 V to 4.5 V 100 220 V/mV

L

= 1 mA 4.85 4.93 V

L

= 1 mA 50 100 mV

L

= VS/2 1.15 1.40 mA

O

f = 1 kHz 12 nV/√Hz

f = 1 kHz 0.1 pA/√Hz

Rev. D | Page 3 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

AD8661/AD8662/AD8664 ELECTRICAL CHARACTERISTICS—SOIC_N, MSOP, AND TSSOP

VS = 16.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.

Table 2.

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS V

AD8661 −40°C < TA < +85°C 1000 μV
AD8661 −40°C < TA < +125°C 1400 μV
AD8662 −40°C < TA < +125°C 1000 μV
AD8664 −40°C < TA < +125°C 1200 μV

Input Bias Current IB 0.3 1 pA

−40°C < TA < +85°C 50 pA

−40°C < TA < +125°C 300 pA
Input Offset Current IOS 0.2 0.5 pA

−40°C < TA < +85°C 20 pA

−40°C < TA < +125°C 75 pA
Input Voltage Range −0.1 +14.0 V
Common-Mode Rejection Ratio CMRR VCM = −0.1 V to +14.0 V 90 110 dB

−40°C < TA < +125°C 90 110 dB
Large Signal Voltage Gain AVO R
Offset Voltage Drift TCVOS

AD8661 −40°C < TA < +125°C 3 10 μV/°C
AD8662, AD8664 −40°C < TA < +125°C 2 9 μV/°C

OUTPUT CHARACTERISTICS

Output Voltage High VOH I
I

−40°C < TA < +125°C 15.50 V
Output Voltage Low VOL I
I

−40°C < TA < +125°C 350 mV
Short-Circuit Current ISC ±140 mA
Closed-Loop Output Impedance Z

POWER SUPPLY

Power Supply Rejection Ratio PSRR VS = 5 V to 16 V 95 110 dB

−40°C < TA < +125°C 95 115 dB
Supply Current per Amplifier ISY V

−40°C < TA < +125°C 2.1 mA
DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 3.5 V/μs
Gain Bandwidth Product GBP 4 MHz
Phase Margin ΦO 65 Degrees

NOISE PERFORMANCE

Peak-to-Peak Noise en p-p f = 0.1 Hz to 10 Hz 2.5 μV p-p
Voltage Noise Density e
f = 10 kHz 10 nV/√Hz
Current Noise Density i

f = 1 MHz, AV = 1 45 Ω

OUT

n

n

= VS/2 50 160 μV

CM

= 2 kΩ, VO = 0.5 V to 15.5 V 200 360 V/mV

L

= 1 mA 15.93 15.97 V

L

= 10 mA 15.60 15.70 V

L

= 1 mA 24 50 mV

L

= 10 mA 190 300 mV

L

= VS/2 1.25 1.55 mA

O

f = 1 kHz 12 nV/√Hz

f = 1 kHz 0.1 pA/√Hz

Rev. D | Page 4 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

AD8661 ELECTRICAL CHARACTERISTICS—LFCSP_VD ONLY

VS = 5.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.

Table 3.

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS V

−40°C < TA < +85°C 2000 μV

Input Bias Current IB 0.3 1 pA

−40°C < TA < +85°C 50 pA
Input Offset Current IOS 0.2 0.5 pA

−40°C < TA < +85°C 20 pA
Input Voltage Range −0.1 +3.0 V
Common-Mode Rejection Ratio CMRR VCM = −0.1 V to +3.0 V 85 100 dB

−40°C < TA < +85°C 80 100 dB
Large Signal Voltage Gain AVO R
Offset Voltage Drift TCVOS −40°C < TA < +85°C 4 17 μV/°C

OUTPUT CHARACTERISTICS

Output Voltage High VOH I

−40°C < TA < +85°C 4.80 V
Output Voltage Low VOL I

−40°C < TA < +85°C 120 mV
Short-Circuit Current ISC ±19 mA
Closed-Loop Output Impedance Z

POWER SUPPLY

Supply Current per Amplifier ISY V

−40°C < TA < +85°C 1.8 mA
DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 3.5 V/μs
Gain Bandwidth Product GBP 4 MHz
Phase Margin ΦO 65 Degrees

NOISE PERFORMANCE

Peak-to-Peak Noise en p-p f = 0.1 Hz to 10 Hz 2.5 μV p-p
Voltage Noise Density e
f = 10 kHz 10 nV/√Hz
Current Noise Density i

f = 1 MHz, AV = 1 65 Ω

OUT

n

n

= VS/2 50 300 μV

CM

= 2 kΩ, VO = 0.5 V to 4.5 V 100 240 V/mV

L

= 1 mA 4.85 4.93 V

L

= 1 mA 50 100 mV

L

= VS/2 1.15 1.40 mA

O

f = 1 kHz 12 nV/√Hz

f = 1 kHz 0.1 pA/√Hz

Rev. D | Page 5 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

AD8661 ELECTRICAL CHARACTERISTICS—LFCSP_VD ONLY

VS = 16.0 V, VCM = VS/2, TA = 25°C, unless otherwise noted.

Table 4.

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS V

−40°C < TA < +85°C 2000 μV
Input Bias Current IB 0.3 1 pA

−40°C < TA < +85°C 50 pA
Input Offset Current IOS 0.2 0.5 pA

−40°C < TA < +85°C 20 pA
Input Voltage Range −0.1 +14.0 V
Common-Mode Rejection Ratio CMRR VCM = −0.1 V to +14.0 V 90 110 dB

−40°C < TA < +85°C 90 110 dB
Large Signal Voltage Gain AVO R
Offset Voltage Drift TCVOS −40°C < TA < +85°C 4 17 μV/°C

OUTPUT CHARACTERISTICS

Output Voltage High VOH I
I

−40°C < TA < +85°C 15.50 V
Output Voltage Low VOL I
I

−40°C < TA < +85°C 400 mV
Short-Circuit Current ISC ±140 mA
Closed-Loop Output Impedance Z

POWER SUPPLY

Power Supply Rejection Ratio PSRR VS = 5 V to 16 V 95 110 dB

−40°C < TA < +85°C 95 115 dB
Supply Current per Amplifier ISY V

−40°C < TA < +85°C 1.9 mA
DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 3.5 V/μs
Gain Bandwidth Product GBP 4 MHz
Phase Margin ΦO 65 Degrees

NOISE PERFORMANCE

Peak-to-Peak Noise en p-p f = 0.1 Hz to 10 Hz 2.5 μV p-p
Voltage Noise Density e
f = 10 kHz 10 nV/√Hz
Current Noise Density i

f = 1 MHz, AV = 1 45 Ω

OUT

n

n

= VS/2 50 300 μV

CM

= 2 kΩ, VO = 0.5 V to 15.5 V 200 420 V/mV

L

= 1 mA 15.95 15.97 V

L

= 10 mA 15.60 15.70 V

L

= 1 mA 24 50 mV

L

= 10 mA 210 350 mV

L

= VS/2 1.25 1.55 mA

O

f = 1 kHz 12 nV/√Hz

f = 1 kHz 0.1 pA/√Hz

Rev. D | Page 6 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

ABSOLUTE MAXIMUM RATINGS

Table 5.

Parameter Rating

Supply Voltage 18 V
Input Voltage −0.1 V to VS
Differential Input Voltage 18 V
Output Short-Circuit Duration to GND Indefinite
Storage Temperature Range −60°C to +150°C
Operating Temperature Range

R-8, RM-8, R-14, and RU-14 −40°C to +125°C

CP-8-2 −40°C to +85°C
Junction Temperature Range −65°C to +150°C
Lead Temperature, Soldering (60 sec) 300°C

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.

THERMAL RESISTANCE

θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.

Table 6. Thermal Resistance

Package Type θJA θ

8-Lead SOIC_N 121 43 °C/W
8-Lead LFCSP_VD 75
8-Lead MSOP 142 44 °C/W
14-Lead SOIC_N 88.2 56.3 °C/W
14-Lead TSSOP 114 23.3 °C/W

1

Exposed pad soldered to application board.

1

Unit

JC

1

18

°C/W

ESD 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 this product 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.

Rev. D | Page 7 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

TYPICAL PERFORMANCE CHARACTERISTICS

6000

VS= 16V

= 25°C

T

A

= –0.1V TO +14V

V

CM

5000

300

VS= 5V AND 16V

250

4000

3000

2000

NUMBER OF AMPL IFIE RS

1000

0

–150

VOS(µV)

Figure 7. Input Offset Voltage Distribution

16

14

12

10

8

6

NUMBER OF AMPL IFIE RS

4

2

0

0123456789

TCVOS(µV/°C)

VS= 16V

= –40°C TO +125°C

T

A

=8V

V

CM

Figure 8. Offset Voltage Drift Distribution

200

150

100

INPUT BIAS CURRENT (pA)

50

05200-026

150100500–50–100

0

–40

TEMPERATURE (°C)

05200-032

1201008040 60200–20

Figure 10. Input Bias Current vs. Temperature

10k

VDD= 16V

1k

100

10

1

OUTPUT SAT URATION VO LTAGE (mV)

05200-017

10

0.1

0.001 0.01 0.1 1 10

VDD–V

OH

SOURCING

V
SINKING

LOAD CURRENT (mA)

OL

05200-019

100

Figure 11. Output Swing Saturation Voltage vs. Load Current

300

VS=16V
T

=25°C

A

200

100

(µV)

0

OS

V

–100

–200

–300

0

COMMON-MO DE VOLT AGE (V)

Figure 9. Input Offset Voltage vs. Common-Mode Voltage

05200-023

1412 131110987654321

110

IL = 1mA

100

90

80

70

60

50

40

30

20

OUTPUT SAT URATION VO LTAGE (mV)

10

0

–40

(VDD – VOH) AT VS = 5V

TEMPERATURE ( °C)

Figure 12. Output Swing Saturation Voltage vs. Temperature, I

Rev. D | Page 8 of 16

VOL AT VS = 5V

(VDD – VOH) AT VS = 16V

V

AT VS = 16V

OL

1201008040 60200–20

= 1 mA

L

05200-030

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

450

IL = 10mA

400

350

(VDD – VOH) AT VS = 16V

300

250

200

150

100

OUTPUT SAT URATION VO LTAGE (mV)

50

0
–40

TEMPERATURE ( °C)

AT VS = 16V

V

OL

Figure 13. Output Swing Saturation Voltage vs. Temperature, I

1201008040 60200–20

= 10 mA

L

05200-031

140

120

100

80

60

CMRR (dB)

40

20

0

100 1k

VS=5VAND16V

FREQUENCY (Hz)

Figure 16. CMRR vs. Frequency

05200-006

10M1M100k10k

80

VS= 5V AND 16V
R

=100kΩ

L

C

=15pF

L

60

40

20

0

–20

OPEN-LOOP GAIN (dB)

–40

–60

10k 100k 1M 10M

GAIN

FREQUENCY (Hz)

Figure 14. Open-Loop Gain and Phase Shift vs. Frequency

1k

VDD = 16V

100

AV = 100

10

(Ω)

OUT

Z

1

0.1

AV = 10

AV = 1

PHASE

0

45

90

135

180

225

270

315

140

VS= 5V AND 16V

120

100

80

60

PSRR (dB)

40

OPEN-LOOP PHASE SHIFT (Degrees)

05200-003

20

0

1k

FREQUENCY (Hz)

05200-005

10M1M100k10k

Figure 17. PSRR vs. Frequency

70

VS = ±2.5 AND ±8V
G = +1

60

R

= 100kΩ

L

50

40

30

OS+

20

SMALL SIGNAL OVERSHOOT (%)

10

OS–

0.01
100 1k

Figure 15. Closed-Loop Outpu

FREQUENCY (Hz)

t Impedance vs. Frequency

05200-007

10M1M100k10k

0

10

Figure 18. Small Signal Overshoot vs. Load Capacitance

Rev. D | Page 9 of 16

LOAD CAPACITANCE (p F)

05200-015

1k100

AD8661/AD8662/AD8664

V

www.BDTIC.com/ADI

1.8

1.6

1.4

1.2

1.0

(mA)

0.8

SY

I

0.6

0.4

0.2

0

–40

Figure 19. Supply Current vs. Temperature

VS=16V

VS=5V

TEMPERATURE (°C)

100

VS= 5V AND 16V
V

= 100mV

80

IN

C

= 200pF

L

G=+1

60

40

20

0

–20

–40

OUTPUT VO LTAGE ( mV)

–60

–80

05200-029

1201008040 60200–20

–100

TIME (0.5µs/DIV)

05200-010

Figure 22. Small Signal Transient Response

1400

1200

1000

800

(µA)

SY

I

600

400

200

0

0

2.0
VS= ±2.5V AND ±8V

1.5

1.0

0.5

0

–0.5

VS (V)

Figure 20. Supply Current vs. Supply Voltage

(Dual-S

upply Configuration), T

= 25°C

A

8

VS= 16V
C

= 200pF

L

6

4

2

0

–2

OUTPUT VOLTAGE (V)

–4

–6

05200-027

18161412108642

–8

TIME (2µs/DIV)

05200-034

Figure 23. Large Signal Transient Response

100m

V

IN

0V

0V

VS = 16V
G = –100

–1.0

PEAK-TO-PE AK NOISE (µV)

–1.5

–2.0

TIME (1s/DIV)

Figure 21. 0.1 Hz to 10 Hz Input Voltage Noise

05200-009

–8V

V

O

Figure 24. Positive Overload Recovery

Rev. D | Page 10 of 16

TIME (5µs/DIV)

05200-013

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

–100mV

16

0V

V

IN

8V

V

O

VS = 16V
G = –100

NUMBER OF AMPL IFIE RS

14

12

10

8

6

4

VS=5V
T

= –40°C T O +125° C

A

V

=2.5V

CM

0V

TIME (5µs/DIV)

Figure 25. Negative Overload Recovery

1k

VS= ±2.5V AND ±8V

100

10

VOLTAG E NOISE DENSITY (nV/ Hz)

1

1

FREQUENCY (Hz)

Figure 26. Voltage Noise Density vs. Frequency

1800

VS=5V

= 25°C

T

A

NUMBER OF AMPL IFIE RS

1600

1400

1200

1000

800

600

400

200

0
–150

V

= –0.1V TO +3V

CM

VOS(µV)

Figure 27. Input Offset Voltage Distribution

2

05200-014

0

0

TCVOS(µV/°C)

05200-022

10987654321

Figure 28. Offset Voltage Drift Distribution

200

VS = 5V

= 25°C

T

A

150

100

50

(µV)

0

OS

V

–50

–100

–150

05200-008

10k1k10010

–200

COMMON-MODE VOLTAGE (V)

05200-021

3.53.02.52.01.51.00–0.5 0.5

Figure 29. Input Offset Voltage vs. Common-Mode Voltage

10k

VDD=5V

1k

100

10

1

OUTPUT SAT URATION VO LTAGE (mV)

05200-024

150100500–50–100

0.1

0.001 0.01 0.1 1 10 20

VDD–V

OH

SOURCING

LOAD CURRENT (mA)

V

OL

SINKING

05200-020

Figure 30. Output Swing Saturation Voltage vs. Load Current

Rev. D | Page 11 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

1k

VDD = 5V

100

AV = 100

10

(Ω)

OUT

Z

1

AV = 10

AV = 1

V

IN

VS = 16V
G = +1

V

O

0.1

0.01
100 1k

Figure 31. Closed-Loop Outpu

2.5
VS=±2.5V

C

= 200pF

L

2.0
G=+1

1.5

1.0

0.5

0

–0.5

–1.0

OUTPUT VO LTAGE (V )

–1.5

–2.0

–2.5

FREQUENCY (Hz)

t Impedance vs. Frequency

TIME (1µs/DIV)

05200-033

10M1M100k10k

05200-011

OUTPUT VOLTAGE (2V/DIV)

05200-012

TIME (0.2µs/DIV)

Figure 33. No Phase Reversal

Figure 32. Large Signal Transient Response

Rev. D | Page 12 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

OUTLINE DIMENSIONS

5.00 (0.1968)

4.80 (0.1890)

4.00 (0.1574)

3.80 (0.1497)

0.25 (0.0098)

0.10 (0.0040)

COPLANARIT Y

0.10

CONTROL LING DI MENSIO NS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF M ILLI METER EQ UIVALENTS FOR
REFERENCE O NLY AND ARE NOT APPROPRIATE FO R USE IN DESIGN.

85

1

1.27 (0.0500)

SEATING

PLANE

COMPLIANT TO JEDEC STANDARDS MS-012-A A

BSC

6.20 (0.2440)

5.80 (0.2284)

4

1.75 (0.0688)

1.35 (0.0532)

0.51 (0.0201)

0.31 (0.0122)

8°
0°

0.25 (0.0098)

0.17 (0.0067)

0.50 (0.0196)

0.25 (0.0099)

1.27 (0.0500)

0.40 (0.0157)

45°

060506-A

Figure 34. 8-Lead Small Outline Package [SOIC_N]

row Body

Nar

(R-8)

Dimensions shown in millimeters and (inches)

0.50

0.40

0.30

4

PIN 1
INDICATOR

1

1.89

1.50

1.74

REF

1.59

PIN 1

INDICATOR

3.00

BSC SQ

TOP

VIEW

2.75

BSC SQ

0.50

BSC

0.60 MAX

8

5

1.60

1.45

1.30

0.90 MAX

0.85 NOM

SEATING

PLANE

12° MAX

0.30

0.23

0.18

0.70 MAX

0.65 TYP

0.05 MAX

0.01 NOM

0.20 REF

Figure 35. 8-Lead Lead Frame Chip Scale Package [LFCSP_VD]

mm x 3 mm Body, Very Thin, Dual Lead

3

(CP-8-2)

Dimensions shown in millimeters

Rev. D | Page 13 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

0.95

0.85

0.75

0.15

0.00

COPLANARITY

3.20

3.00

2.80

8

5

4

SEATING
PLANE

5.15

4.90

4.65

1.10 MAX

0.23

0.08

3.20

3.00

1

2.80

PIN 1

0.65 BSC

0.38

0.22

0.10

COMPLIANT TO JEDEC STANDARDS MO-187-AA

8°
0°

0.80

0.60

0.40

Figure 36. 8-Lead Mini Small Outline Package [MSOP]

(RM-8)

Dim

ensions shown in millimeters

8.75 (0.3445)

8.55 (0.3366)

4.00 (0.1575)

3.80 (0.1496)

14

1

8

7

6.20 (0.2441)

5.80 (0.2283)

0.25 (0.0098)

0.10 (0.0039)

COPLANARITY

0.10

CONTROLL ING DIMENSI ONS ARE IN MILLIMETERS; INCH DIME NSIONS
(IN PARENTHESES) ARE ROUNDED-OF F MILL IMETER EQ UIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.

1.27 (0.0500)
BSC

0.51 (0.0201)

0.31 (0.0122)

COMPLIANT TO JEDEC STANDARDS MS-012-AB

1.75 (0.0689)

1.35 (0.0531)

SEATING
PLANE

8°
0°

0.25 (0.0098)

0.17 (0.0067)

0.50 (0.0197)

0.25 (0.0098)

1.27 (0.0500)

0.40 (0.0157)

45°

060606-A

Figure 37. 14-Lead Standard Small Outline Package [SOIC_N]

Nar

row Body

(R-14)

Dimensions shown in millimeters and (inches)

5.10

5.00

4.90

14

4.50

4.40

4.30

PIN 1

1.05

1.00

0.80

0.65

BSC

0.15

0.05

COMPLIANT TO JEDEC STANDARDS MO-153-AB-1

Figure 38. 14-Lead Thin Shrink S

8

6.40
BSC

71

0.20

1.20

0.09

MAX

0.30
SEATING

0.19
PLANE

COPLANARITY

0.10

mall Outline Package [TSSOP]

(RU-14)

Dimensions shown in millimeters

8°
0°

0.75

0.60

0.45

Rev. D | Page 14 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

ORDERING GUIDE

Model Temperature Range Package Description Package Option Branding

AD8661ARZ
AD8661ARZ-REEL
AD8661ARZ-REEL7
AD8661ACPZ-R2
AD8661ACPZ-REEL
AD8661ACPZ-REEL7
AD8662ARZ
AD8662ARZ-REEL
AD8662ARZ-REEL7
AD8662ARMZ-R2
AD8662ARMZ-REEL
AD8664ARZ
AD8664ARZ-REEL
AD8664ARZ-REEL7
AD8664ARUZ
AD8664ARUZ-REEL

1

Z = Pb-free part.

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

−40°C to +125°C 8-Lead SOIC_N R-8

−40°C to +125°C 8-Lead SOIC_N R-8

−40°C to +125°C 8-Lead SOIC_N R-8

−40°C to +85°C 8-Lead LFCSP_VD CP-8-2 A0M

−40°C to +85°C 8-Lead LFCSP_VD CP-8-2 A0M

−40°C to +85°C 8-Lead LFCSP_VD CP-8-2 A0M

−40°C to +125°C 8-Lead SOIC_N R-8

−40°C to +125°C 8-Lead SOIC_N R-8

−40°C to +125°C 8-Lead SOIC_N R-8

−40°C to +125°C 8-Lead MSOP RM-8 A10

−40°C to +125°C 8-Lead MSOP RM-8 A10

−40°C to +125°C 14-Lead SOIC_N R-14

−40°C to +125°C 14-Lead SOIC_N R-14

−40°C to +125°C 14-Lead SOIC_N R-14

−40°C to +125°C 14-Lead TSSOP RU-14

−40°C to +125°C 14-Lead TSSOP RU-14

Rev. D | Page 15 of 16

AD8661/AD8662/AD8664

www.BDTIC.com/ADI

NOTES

©2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05200-0-7/06(D)

Rev. D | Page 16 of 16