Precision, 20 MHz, CMOS, Rail-to-Rail

Input/Output Operational Amplifiers

AD8615/AD8616/AD8618

Rev. E

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FEATURES

Low offset voltage: 65 μV maximum

Single-supply operation: 2.7 V to 5.0 V

Low noise: 8 nV/√Hz

Wide bandwidth: >20 MHz

Slew rate: 12 V/μs

High output current: 150 mA

No phase reversal

Low input bias current: 1 pA

Low supply current: 2 mA

Unity-gain stable

APPLICATIONS

Barcode scanners

Battery-powered instrumentation

Multipole filters

Sensors

ASIC input or output amplifiers

Audio

Photodiode amplification

GENERAL DESCRIPTION

The AD8615/AD8616/AD8618 are single/dual/quad, rail-to-

rail, input and output, single-supply amplifiers featuring very

low offset voltage, wide signal bandwidth, and low input voltage

and current noise. The parts use a patented trimming technique

that achieves superior precision without laser trimming. The

AD8615/AD8616/ AD8618 are fully specified to operate from

2.7 V to 5 V single supplies.

The combination of >20 MHz bandwidth, low offset, low noise,

and low input bias current makes these amplifiers useful in a

wide variety of applications. Filters, integrators, photodiode

amplifiers, and high impedance sensors all benefit from the

combination of performance features. AC applications benefit from

the wide bandwidth and low distortion. The AD8615/AD8616/

AD8618 offer the highest output drive capability of the DigiTrim®

family, which is excellent for audio line drivers and other low

impedance applications.

Applications for the parts include portable and low powered

instrumentation, audio amplification for portable devices,

portable phone headsets, bar code scanners, and multipole

filters. The ability to swing rail-to-rail at both the input and

output enables designers to buffer CMOS ADCs, DACs, ASICs,

and other wide output swing devices in single-supply systems.

PIN CONFIGURATIONS

AD8615

TOP VIEW

(Not to Scale)

V+

–IN

5

4

Figure 1. 5-Lead TSOT-23 (UJ-5)

V+

8

OUT B

7

–IN B

6

+IN B

5

AD8616

TOP VIEW

(Not to Scale)

Figure 2. 8-Lead MSOP (RM-8)

V+

8

OUT B

7

–IN B

6

+IN B

5

AD8616

TOP VIEW

(Not to Scale)

Figure 3. 8-Lead SOIC (R-8)

AD8618

TOP VIEW

(Not to Scale)

OUT A

OUT D

–IN A

–IN D

+IN A

+IN D

V+

V–

+IN B

+IN C

–IN B

–IN C

14

8

1

7

OUT B

OUT C

Figure 4. 14-Lead TSSOP (RU-14)

AD8618

TOP VIEW

(Not to Scale)

OUT D

14

–IN D

13

+IN D

12

V–

11

+IN C

10

–IN C

9

OUT C

8

Figure 5. 14-Lead SOIC (R-14)

The AD8615/AD8616/AD8618 are specified over the extended

industrial temperature range (−40°C to +125°C). The AD8615

is available in 5-lead TSOT-23 package. The AD8616 is available

in 8-lead MSOP and narrow SOIC surface-mount packages; the

MSOP version is available in tape and reel only. The AD8618 is

available in 14-lead SOIC and TSSOP packages.