36 V, 18 MHz, Low Noise, Fast Settling

Single Supply, RRO, JFET Op Amp

Data Sheet

ADA4625-1

Rev. 0

Document Feedback

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

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

©2017 Analog Devices, Inc. All rights reserved.

Technical Support

www.analog.com

FEATURES

Wide gain bandwidth product: 18 MHz typical

High slew rate: 48 V/μs typical

Low voltage noise density: 3.3 nV/√Hz typical at 1 kHz

Low peak-to-peak noise: 0.15 μV p-p, 0.1 Hz to 10 Hz

Fast settling: 0.01% in 700 ns typical

Wide range of operating voltages

Dual-supply operation: ±2.5 V to ±18 V

Single-supply operation: 5 V to 36 V

Input voltage range includes V−

Rail-to-rail output

High capacitive load drive capability

Output short-circuit current: ±46 mA

No phase reversal

Unity-gain stable

APPLICATIONS

PLL filter amplifiers

Transimpedance amplifiers

Photodiode sensor interfaces

Low noise charge amplifiers

GENERAL DESCRIPTION

The ADA4625-1 builds upon Analog Devices, Inc., industry

leading high voltage, single-supply, rail-to-rail output (RRO),

precision junction field effect transistor (JFET) input op amps,

taking that product type to a level of speed and low noise that

has not been made available to the market previously.

The ADA4625-1 provides optimal performance in high voltage,

high gain, and low noise applications. The input common-mode

voltage range includes the negative supply, and the output

swings rail to rail. This enables the user to maximize dynamic

input range in low voltage, single supply applications without

the need for a separate negative voltage power supply for

ground sense.

The combination of wide bandwidth, low noise, and low input

bias current makes the ADA4625-1 especially suitable for

phase-locked loop (PLL), active filter amplifiers and for high

and preamplifiers where low level signals require an amplifier

that provides both high amplification and wide bandwidth.

PIN CONFIGURATION

NC

8

V+

7

OUT

6

NC

5

ADA4625-1

TOP VIEW

(Not to Scale)

NOTES

1. NC = NO CONNECTION. DO NOT CONNECT TO THIS PIN.

2. EXPOSED PAD. CONNECT THE EXPOSED PAD TO GND,

V+ OR V– PLANE, OR LEAVE IT FLOATING.

Figure 1.

The ADA4625-1 is unity-gain stable, and there is no phase

reversal when input range exceeds either supply rail by 200 mV.

The output is capable of driving loads up to 1000 pF and/or

600 Ω loads.

The ADA4625-1 is specified for operation over the extended

industrial temperature range of −40°C to +125°C and operates

from +5 V to +36 V (±2.5 V to ±18 V) with specifications at +5 V

and ±18 V. The ADA4625-1 is available in 8-lead SOIC package

with an exposed pad (EPAD).

100

10

1

1

10

100

100k

10k

1k

FREQUENCY (Hz)

Figure 2. Voltage Noise Density vs. Frequency

Table 1. Related Precision JFET Operational Amplifiers

Single

Dual

Quad

Not applicable

AD823A

Not applicable

AD8510

AD8512

AD8513

AD8610

AD8620

Not applicable

ADA4610-1

ADA4610-2

ADA4610-4

ADA4622-1

ADA4622-2

ADA4622-4

ADA4627-1/ADA4637-1

Not applicable

Not applicable