ANALOG DEVICES AD8613, AD8617, AD8619 Service Manual

Low Cost Micropower, Low Noise CMOS Rail-to-

www.BDTIC.com/ADI

Rail, Input/Output Operational Amplifiers

FEATURES

Offset voltage: 2.2 mV max
Low input bias current: 1 pA max
Single-supply operation: 1.8 V to 5 V
Low noise: 22 nV/√Hz
Micropower: 38 μA
No phase reversal
Unity gain stable

APPLICATIONS

Battery-powered instrumentation
Multipole filters
Current shunt sense
Sensors
ADC predrivers
DAC drivers/level shifters
Low power ASIC input or output amplifiers

GENERAL DESCRIPTION

The AD8613/AD8617/AD8619 are single, dual, and quad
micropower, rail-to-rail input and output amplifiers that feature
low supply current, low input voltage, and low current noise.

The parts are fully specified to operate from 1.8 V to 5.0 V

ingle supply, or ±0.9 V and ±2.5 V dual supply. The combination

s
of low noise, very low input bias currents, and low power
consumption make the AD8613/AD8617/AD8619 especially
useful in portable and loop-powered instrumentation.

The ability to swing rail-to-rail at both the input and output

bles designers to buffer CMOS ADCs, DACs, ASICs, and

ena
other wide output swing devices in low power, single-supply
systems.

The AD8613 is available in a 5-lead SC70 package and a 5-lead
TSOT

-23 package. The AD8617 is available in 8-lead MSOP
and 8-lead SOIC packages. The AD8619 is available in 14-lead
TSSOP and 14-lead SOIC packages.

AD8613/AD8617/AD8619

PIN CONFIGURATIONS

14
13
12
11
10

5

4

8
7
6
5

8
7
6
5

14
13

12

11

10

9
8

V+
OUT B
–IN B
+IN B

9

8

OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C

V+

–IN

V+
OUT B
–IN B
+IN B

OUT D

–IN D

+IN D
V–

+IN C
–IN C

OUT C

05622-037

05622-001

05622-002

05622-035

05622-036

1

OUT

+IN

V–

AD8613

TOP VIEW

2

(Not to Scale)

3

Figure 1. 5-Lead SC70 and 5-Lead TSOT-23

1

OUT A

–IN A
+IN A

V–

AD8617

2

TOP VIEW

3

(Not toScale)

4

Figure 2. 8-Lead MSOP

1

OUT A

–IN A
+IN A

V–

AD8617

2
3

TOP VIEW

(Not to Scale)

4

Figure 3. 8-Lead SOIC_N

1

OUT A

2

–IN A

3

+IN A

V+

+IN B
–IN B

OUT B

AD8619

TOP VIEW

4

(Not to Scale)

5

6

7

Figure 4. 14-Lead TSSOP

OUT A

1
2

–IN A
+IN A

3

AD8619

TOP VIEW

V+

4

(Not to Scale)

+IN B

5
6

–IN B

OUT B

7

Figure 5. 14-Lead SOIC_N

Rev. B

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.

AD8613/AD8617/AD8619

www.BDTIC.com/ADI

TABLE OF CONTENTS

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

Thermal Resistance.......................................................................5

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

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

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

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

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

Absolute Maximum Ratings............................................................ 5

REVISION HISTORY

1/06—Rev. A to Rev. B

Added AD8613 ...................................................................Universal

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

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

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

Updated Outline Dimensions....................................................... 12

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

ESD Caution...................................................................................5

Typical Performance Characteristics..............................................6

Outline Dimensions....................................................................... 12

Ordering Guide .......................................................................... 13

10/05—Rev. 0 to Rev. A

A

dded AD8619 ...................................................................Universal

Change to Specifications Section ....................................................3

Updated Outline Dimensions....................................................... 12

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

9/05—Revision 0: Initial Version

Rev. B | Page 2 of 16

AD8613/AD8617/AD8619

www.BDTIC.com/ADI

SPECIFICATIONS

Electrical characteristics @ VS = 5 V, VCM = VS/2, TA = 25°C, unless otherwise noted.

Table 1.

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS −0.3 V < VCM < +5.3 V 0.4 2.2 mV

−40°C < TA < +125°C, −0.3 V < VCM < +5.2 V 2.2 mV
Offset Voltage Drift VOS/T −40°C < TA < +125°C 1 4.5 µV/°C
AD8613 2.5 7.0 µV/°C
Input Bias Current IB 0.2 1 pA

−40°C < TA < +85°C 110 pA

−40°C < TA < +125°C 780 pA
Input Offset Current IOS 0.1 0.5 pA

−40°C < TA < +85°C 50 pA

−40°C < TA < +125°C 250 pA
Common-Mode Rejection Ratio CMRR 0 V < VCM < 5 V 95 dB

−40°C < TA < +125°C 68 dB
Large Signal Voltage Gain AVO R

Input Capacitance C
C
OUTPUT CHARACTERISTICS

Output Voltage High VOH I

−40°C to +125°C 4.9 V

I

−40°C to +125°C 4.50 V

Output Voltage Low VOL I

−40°C to +125°C 50 mV

I

−40°C to +125°C 335 mV

Short-Circuit Current ISC ±80 mA

Closed-Loop Output Impedance Z
POWER SUPPLY

Power Supply Rejection Ratio PSRR 1.8 V < VS < 5 V 67 94 dB

−40°C < TA < +125°C 64 dB

Supply Current/Amplifier ISY V

−40°C <TA < +125°C 50 µA
DYNAMIC PERFORMANCE

Slew Rate SR RL = 10 kΩ 0.1 V/µs

Settling Time 0.1% t

Gain Bandwidth Product GBP RL = 100 kΩ 400 kHz

R

Phase Margin ØO R
NOISE PERFORMANCE

Peak-to-Peak Noise 2.3 3.5 µV

Voltage Noise Density en f = 1 kHz 25 nV/√Hz

f = 10 kHz 22 nV/√Hz

Current Noise Density in f = 1 kHz 0.05 pA/√Hz

1.9 pF

DIFF

2.5 pF

CM

f = 10 kHz, AV = 1 15 Ω

OUT

S

= 10 kΩ, 0.5 V < VO < 4.5 V 235 500 V/mV

L

= 1 mA 4.95 4.98 V

L

= 10 mA 4.7 V

L

= 1 mA 20 30 mV

L

= 10 mA 190 275 mV

L

= VS/2 38 µA

O

G = ±1, 2 V step, CL = 20 pF, RL = 1 kΩ 23 s

= 10 kΩ 350 kHz

L

= 10 kΩ, RL = 100 kΩ, CL = 20 pF 70 Degrees

L

Rev. B | Page 3 of 16

AD8613/AD8617/AD8619

www.BDTIC.com/ADI

Electrical characteristics @ VS = 1.8 V, VCM = VS/2, TA = 25°C, unless otherwise noted.

Table 2.

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS −0.3 V < VCM < +1.9 V 0.4 2.2 mV

−0.3 V < VCM < +1.8 V; −40°C < TA < +125°C 2.2 mV
Offset Voltage Drift VOS/T −40°C < TA < +125°C 1 8.5 µV/°C
AD8613 3.7 9.0 µV/°C
Input Bias Current IB 0.2 1 pA

−40°C < TA < +85°C 110 pA

−40°C < TA < +125°C 780 pA
Input Offset Current IOS 0.1 0.5 pA

−40°C < TA < +85°C 50 pA

−40°C < TA < +125°C 250 pA
Common-Mode Rejection Ratio CMRR 0 V < VCM < 1.8 V 58 86 dB

−40°C < TA < +125°C 55 dB
Large Signal Voltage Gain AVO R

Input Capacitance C
C
OUTPUT CHARACTERISTICS

Output Voltage High VOH I

−40°C to +125°C 1.6 V

Output Voltage Low VOL I

−40°C to +125°C 80 mV

Short-Circuit Current ISC ±7 mA

Closed-Loop Output Impedance Z
POWER SUPPLY

Power Supply Rejection Ratio PSRR 1.8 V < VS < 5 V 67 94 dB

Supply Current/Amplifier ISY V

−40°C <TA < +125°C 50 µA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 10 kΩ 0.1 V/µs

Settling Time 0.1% t

Gain Bandwidth Product GBP RL = 100 kΩ 400 kHz

R

Phase Margin ØO R
NOISE PERFORMANCE

Peak-to-Peak Noise 2.3 3.5 µV

Voltage Noise Density en f = 1 kHz 25 nV/√Hz

f = 10 kHz 22 nV/√Hz

Current Noise Density in f = 1 kHz 0.05 pA/√Hz

2.1 pF

DIFF

3.8 pF

CM

f = 10 kHz, AV = 1 15 Ω

OUT

S

= 10 kΩ, 0.5 V < VO < 1.3 V 85 1000 V/mV

L

= 1 mA 1.65 1.73 V

L

= 1 mA 44 60 mV

L

= VS/2 38 µA

O

G = ±1, 1 V step, CL = 20 pF, RL = 1 kΩ 6.5 µs

= 10 kΩ 350 kHz

L

= 10 kΩ, RL = 100 kΩ, CL = 20 pF 70 Degrees

L

Rev. B | Page 4 of 16

AD8613/AD8617/AD8619

www.BDTIC.com/ADI

ABSOLUTE MAXIMUM RATINGS

TA = 25°C, unless otherwise noted.

Table 3.

Parameter Rating

Supply Voltage 6 V
Input Voltage VSS − 0.3 V to VDD + 0.3 V
Differential Input Voltage ±6 V
Output Short-Circuit Duration to GND Observe derating curve
Storage Temperature Range −65°C to +150°C
Lead Temperature (Soldering, 60 sec) 300°C
Operating Temperature Range −40°C to +125°C
Junction Temperature Range −65°C to +150°C

Stresses above those listed under Absolute Maximum Ratings
ma

y 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.

Absolute maximum ratings apply at 25°C, unless otherwise

d.

note

THERMAL RESISTANCE

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

Table 4. Thermal Characteristics

Package Type θJA θ

5-Lead TSOT-23 (UJ-5) 207 61 °C/W
5-Lead SC70 (KS-5) 376 126 °C/W
8-Lead MSOP (RM-8) 210 45 °C/W
8-Lead SOIC_N (R-8) 158 43 °C/W
14-Lead SOIC_N (R-14) 120 36 °C/W
14-Lead TSSOP (RU-14) 180 35 °C/W

Unit

JC

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. B | Page 5 of 16