High Speed, Rail-to-Rail Output

Op Amps with Ultralow Power-Down

ADA4850-1/ADA4850-2

Rev. B

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

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other

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

www.analog.com

Fax: 781.461.3113

©2005–2007 Analog Devices, Inc. All rights reserved.

FEATURES

Ultralow power-down current: 150 nA/amplifier maximum

Low quiescent current: 2.4 mA/amplifier

High speed

175 MHz, −3 dB bandwidth

220 V/μs slew rate

85 ns settling time to 0.1%

Excellent video specifications

0.1 dB flatness: 14 MHz

Differential gain: 0.12%

Differential phase: 0.09°

Single-supply operation: 2.7 V to 6 V

Rail-to-rail output

Output swings to within 80 mV of either rail

Low voltage offset: 0.6 mV

APPLICATIONS

Portable multimedia players

Video cameras

Digital still cameras

Consumer video

Clock buffers

PIN CONFIGURATIONS

1

POWER DOWN

2

NC

3

–IN

4

+IN

7 OUTPUT

6 NC

ADA4850-1

NC = NO CONNECT

Figure 1. 8-Lead, 3 mm × 3 mm LFCSP

NC = NO CONNECT

1

2

–IN1

3

+IN1

4

10 –IN2

9

+IN2

ADA4850-2

Figure 2. 16-Lead, 3 mm × 3 mm LFCSP

GENERAL DESCRIPTION

The ADA4850-1/ADA4850-21 are low price, high speed, voltage

feedbacks rail-to-rail output op amps with ultralow power-

down. Despite their low price, the ADA4850-1/ADA4850-2

provide excellent overall performance and versatility. The

175 MHz, −3 dB bandwidth and 220 V/μs slew rate make these

amplifiers well-suited for many general-purpose, high speed

applications.

The ADA4850-1/ADA4850-2 are designed to operate at supply

voltages as low as 2.7 V and up to 6 V at 2.4 mA of supply

current per amplifier. In power-down mode, the supply current

is less than 150 nA, ideal for battery-powered applications.

The ADA4850 family provides users with a true single-supply

capability, allowing input signals to extend 200 mV below the

negative rail and to within 2.2 V of the positive rail. The output

of the amplifier can swing within 80 mV of either supply rail.

With its combination of low price, excellent differential gain

(0.12%), differential phase (0.09°), and 0.1 dB flatness out to

14 MHz, these amplifiers are ideal for video applications.

The ADA4850-1/ADA4850-2 are designed to work in the

extended temperature range of −40°C to +125°C.

1

100

10

1000

FREQUENCY (MHz)

–6

–4

–5

–2

–3

0

–1

2

1

G = +1

Figure 3. Small Signal Frequency Response