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See Technical Specifications

OPA846ID

Wideband low-noise voltage-feedback operational amplifier

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

OPA846ID
Datasheet:

OPA846ID Datasheet (PDF)
Amplifier Type:

Voltage Feedback
Number of Circuits:

1
Slew Rate:

625V/µs
Gain Bandwidth Product:

1.75 GHz
EDA/CAD Models:

Request Free CAD Models for OPA846ID

Email: [email protected]

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Tel: +852 95804164

OPA846ID General Description

The OPA846 combines very high gain bandwidth and large signal performance with very low input voltage noise, while dissipating a low 12.6mA supply current. The classical differential input stage, along with two stages of forward gain and a high power output stage, combine to make the OPA846 an exceptionally low distortion amplifier with excellent DC accuracy and output drive. The voltage-feedback architecture allows all standard op amp applications to be implemented with very high performance.

The combination of low input voltage and current noise, along with a 1.75GHz gain bandwidth product, make the OPA846 an ideal amplifier for wideband transimpedance stages. As a voltage gain stage, the OPA846 is optimized for a flat response at a gain of +10 and is stable down to a gain of +7.

A new external compensation technique can be used to give a very flat frequency response below the minimum stable gain for the OPA846, further improving its already exceptional distortion performance. Using this compensation makes the OPA846 one of the premier 12 to 16bit AnalogtoDigital (A/D) converter input drivers. The supply current for the OPA846 is precisely trimmed to 12.6mA at +25°C. This, along with carefully defined supply current tempco in the input and output stages, combine to provide exceptional performance over the full specified temperature range.

Key Features

HIGH BANDWIDTH: 400MHz (G = +10)
LOW INPUT VOLTAGE NOISE: 1.2nV/√Hz
VERY LOW DISTORTION: –100dBc (5MHz)
HIGH SLEW RATE: 625V/µs
HIGH DC ACCURACY: V_IO ±150µV
LOW SUPPLY CURRENT: 12.6mA
HIGH GAIN BANDWIDTH PRODUCT: 1750MHz
STABLE FOR GAINS ≥ 7
APPLICATIONS
- HIGH DYNAMIC RANGE ADC PREAMPS
- LOW–NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
- WIDEBAND, HIGH GAIN AMPLIFIERS
- LOW–NOISE DIFFERENTIAL RECEIVERS
- VDSL LINE RECEIVERS
- ULTRASOUND CHANNEL AMPLIFIERS
- SECURITY SENSOR FRONT ENDS
- UPGRADE FOR THE OPA686, CLC425, AND LMH6624

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Specifications

Category	Integrated Circuits (ICs)LinearAmplifiersInstrumentation, OP Amps, Buffer Amps	Series	-
Amplifier Type	Voltage Feedback	Number of Circuits	1
Output Type	-	Slew Rate	625V/µs
Gain Bandwidth Product	1.75 GHz	Current - Input Bias	10 µA
Voltage - Input Offset	150 µV	Current - Supply	12.6mA
Current - Output / Channel	80 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	OPA846
Architecture	Voltage FB	Number of channels	1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	10	Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	12
GBW (typ) (MHz)	1750	BW at Acl (MHz)	500
Acl, min spec gain (V/V)	7	Slew rate (typ) (V/µs)	625
Vn at flatband (typ) (nV√Hz)	1.2	Vn at 1 kHz (typ) (nV√Hz)	1.2
Iq per channel (typ) (mA)	12.6	Vos (offset voltage at 25°C) (max) (mV)	0.6
Rail-to-rail	No	Features	Decompensated
Rating	Catalog	Operating temperature range (°C)	-40 to 85
CMRR (typ) (dB)	110	Input bias current (max) (pA)	19000000
Offset drift (typ) (µV/°C)	1.5	Iout (typ) (mA)	80
2nd harmonic (dBc)	76	3rd harmonic (dBc)	109
Frequency of harmonic distortion measurement (MHz)	5