OPA2691IDR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

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

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

HIGH OUTPUT CURRENT: 190mA

OUTPUT VOLTAGE SWING: ±4.0V

HIGH SLEW RATE: 2100V/μs

LOW SUPPLY CURRENT: 5.1mA/ch

LOW DISABLED CURRENT: 150μA/ch

APPLICATIONS

xDSL LINE DRIVER/RECEIVER

MATCHED I/Q CHANNEL AMPLIFIER

BROADBAND VIDEO BUFFERS

HIGH-SPEED IMAGING CHANNELS

PORTABLE INSTRUMENTS

DIFFERENTIAL ADC DRIVERS

ACTIVE FILTERS

WIDEBAND INVERTING SUMMING

DESCRIPTION

The OPA2691 sets a new level of performance for broadband dual

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

supply current, the OPA2691 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 OPA2691

can deliver a 1V to 4V output swing with over 150mA drive current

and 190MHz bandwidth. This combination of features makes the

OPA2691 an ideal RGB line driver or single-supply Analog-to-Digital

Converter (ADC) input driver.

The OPA2691’s low 5.1mA/ch 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

(SO-14 only). Leaving this disable pin open, or holding it HIGH,

gives normal operation. If pulled LOW, the OPA2691 supply current

drops to less than 150μA/ch while the output goes into a high

impedance state. This feature may be used for power savings.