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OPA847IDBVT

Voltage Feedback Amplifier 1 Circuit SOT-23-6

Manufacturer: Texas Instruments, Inc
Mfr.Part #: OPA847IDBVT
Datasheet: OPA847IDBVT Datasheet (PDF)
Amplifier Type: Voltage Feedback
Number of Circuits: 1
Slew Rate: 950V/µs
Gain Bandwidth Product: 3.9 GHz
EDA/CAD Models: Request Free CAD Models for OPA847IDBVT

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Tel: +852 95804164

OPA847IDBVT General Description

The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage (0.85nV/√Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an optional power shutdown pin that, when pulled low, disables the amplifier and decreases the supply current to < 1% of the powered-up value. This optional feature may be left disconnected to ensure normal amplifier operation when no power-down is required.

The combination of very low input voltage and current noise, along with a 3.9GHz gain bandwidth product, make the OPA847 an ideal amplifier for wideband transimpedance applications. As a voltage gain stage, the OPA847 is optimized for a flat frequency response at a gain of +20V/V and is stable down to gains as low as +12V/V. New external compensation techniques allow the OPA847 to be used at any inverting gain with excellent frequency response control. Using this technique in a differential Analog-to-Digital Converter (ADC) interface application, shown below, can deliver one of the highest dynamic range interfaces available.

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Key Features

HIGH GAIN BANDWIDTH: 3.9GHz
LOW INPUT VOLTAGE NOISE: 0.85nV/√Hz
VERY LOW DISTORTION: –105dBc (5MHz)
HIGH SLEW RATE: 950V/µs
HIGH DC ACCURACY: V_IO < ±100µV
LOW SUPPLY CURRENT: 18.1mA
LOW SHUTDOWN POWER: 2mW
STABLE FOR GAINS 12
APPLICATIONS
- HIGH DYNAMIC RANGE ADC PREAMPS
- LOW NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
- WIDEBAND, HIGH GAIN AMPLIFIERS
- LOW NOISE DIFFERENTIAL RECEIVERS
- ULTRASOUND CHANNEL AMPLIFIERS
- IMPROVED UPGRADE FOR THE OPA687, CLC425, AND LMH6642

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Specifications

Amplifier Type	Voltage Feedback	Number of Circuits	1
Slew Rate	950V/µs	Gain Bandwidth Product	3.9 GHz
Current - Input Bias	19 µA	Voltage - Input Offset	100 µV
Current - Supply	18.1mA	Current - Output / Channel	100 mA
Voltage - Supply Span (Min)	5 V	Voltage - Supply Span (Max)	12 V
Operating Temperature	-40°C ~ 85°C	Mounting Type	Surface Mount
Base Product Number	OPA847