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OPA693IDBVT

Ultra-Wideband, Fixed Gain Video Buffer Amplifier with Disable

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

OPA693IDBVT
Datasheet:

OPA693IDBVT Datasheet (PDF)
Applications:

Buffer
Number of Circuits:

1
-3db Bandwidth:

1.4 GHz
Slew Rate:

2500V/µs
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OPA693IDBVT General 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 2.5V_PP 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 OPA693s 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.

Key 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

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Specifications

Category	Integrated Circuits (ICs)LinearAmplifiersVideo Amps and Modules	Series	-
Applications	Buffer	Output Type	-
Number of Circuits	1	-3db Bandwidth	1.4 GHz
Slew Rate	2500V/µs	Current - Supply	13 mA
Current - Output / Channel	120 mA	Voltage - Supply, Single/Dual (±)	5V ~ 12V, ±2.5V ~ 6V
Mounting Type	Surface Mount	Base Product Number	OPA693