OPA691IDG4中文资料德州仪器数据手册PDF规格书

FEATURES

FLEXIBLE SUPPLY RANGE:

+5V to +12V Single-Supply

±2.5V to ±6V Dual-Supply

UNITY-GAIN STABLE: 280MHz (G = 1)

HIGH OUTPUT CURRENT: 190mA

OUTPUT VOLTAGE SWING: ±4.0V

HIGH SLEW RATE: 2100V/μs

LOW dG/dφ: 0.07%/0.02°

LOW SUPPLY CURRENT: 5.1mA

LOW DISABLED CURRENT: 150μA

WIDEBAND +5V OPERATION: 190MHz (G = +2)

APPLICATIONS

xDSL LINE DRIVER

BROADBAND VIDEO BUFFERS

HIGH-SPEED IMAGING CHANNELS

PORTABLE INSTRUMENTS

ADC BUFFERS

ACTIVE FILTERS

WIDEBAND INVERTING SUMMING

HIGH SFDR IF AMPLIFIER

DESCRIPTION

The OPA691 sets a new level of performance for broadband

current feedback op amps. Operating on a very low 5.1mA

supply current, the OPA691 offers a slew rate and output

power normally associated with a much higher supply current.

A new output stage architecture delivers a high output

current with minimal voltage headroom and crossover distortion.

This gives exceptional single-supply operation. Using a

single +5V supply, the OPA691 can deliver a 1V to 4V output

swing with over 150mA drive current and 190MHz bandwidth.

This combination of features makes the OPA691 an

ideal RGB line driver or single-supply Analog-to-Digital Converter

(ADC) input driver.

The OPA691’s low 5.1mA supply current is precisely trimmed

at 25°C. This trim, along with low drift over-temperature,

ensures lower maximum supply current than competing

products. System power may be further reduced by using the

optional disable control pin. Leaving this disable pin open, or

holding it HIGH, gives normal operation. If pulled LOW, the

OPA691 supply current drops to less than 150μA while the

output goes into a high impedance state. This feature may be

used for power savings.