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FEATURES

VERY HIGH BANDWIDTH (G = +2): 700MHz

FLEXIBLE SUPPLY RANGE:

+5V to +12V Single Supply

±2.5V to ±6V Dual Supplies

INTERNALLY FIXED GAIN: +2 or ±1

LOW SUPPLY CURRENT: 13mA

LOW DISABLED CURRENT: 120μA

HIGH OUTPUT CURRENT: ±120mA

OUTPUT VOLTAGE SWING: ±4.1V

SOT23-6 AVAILABLE

APPLICATIONS

BROADBAND VIDEO LINE DRIVERS

MULTIPLE LINE VIDEO DA

PORTABLE INSTRUMENTS

ADC BUFFERS

HIGH FREQUENCY ACTIVE FILTERS

HFA1112 IMPROVED DROP-IN

DESCRIPTION

The OPA693 provides an easy to use, broadband, fixed gain

buffer amplifier. Depending on the external connections, the

internal resistor network may be used to provide either a

fixed gain of +2 video buffer or a gain of ±1 voltage buffer.

Operating on a low 13mA supply current, the OPA693 offers

a slew rate (2500V/μs) and bandwidth (> 700MHz) normally

associated with a much higher supply current. A new output

stage architecture delivers high output current with a minimal

headroom and crossover distortion. This gives exceptional

single-supply operation. Using a single +5V supply, the

OPA693 can deliver a 2.5VPP swing with over 90mA drive

current and 500MHz bandwidth at a gain of +2. This combination

of features makes the OPA693 an ideal RGB line

driver or single-supply undersampling Analog-to-Digital Converter

(ADC) input driver.

The OPA693’s low 13mA supply current is precisely trimmed

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

ensures lower maximum supply current than competing

products that report only a room temperature nominal supply

current. 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. This optional disable

allows the OPA693 to fit into existing video buffer

layouts where the disable pin is unconnected to get improved

performance with no board changes. If pulled LOW, the

OPA693 supply current drops to less than 170μA while the

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

used for power savings.

The low gain stable current-feedback architecture used in the

OPA693 is particularly suitable for high full-power bandwidth

cable driving requirements. Where the additional flexibility of

an op amp is required, consider the OPA695 ultra-wideband

current feedback op amp. Where a unity gain stable voltage

feedback op amp with very high slew rate is required,

consider the OPA690.