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High-speed op amps (GBW ≥ 50 MHz)

OPA2625

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High-Bandwidth, High-Precision, Low THD+N, 16-Bit and 18-Bit ADC Drivers with shutdown

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Data sheet

OPA2625

ACTIVE
Data sheet Order now

Product details

Architecture Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 GBW (typ) (MHz) 120 BW at Acl (MHz) 120 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 115 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 3.2 Iq per channel (typ) (mA) 2 Vos (offset voltage at 25°C) (max) (mV) 0.1 Rail-to-rail In to V-, Out Features Adjustable BW/IQ/IOUT, C-Load Drive, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 117 Input bias current (max) (pA) 4000000 Offset drift (typ) (µV/°C) 0.5 Iout (typ) (mA) 100 2nd harmonic (dBc) 144 3rd harmonic (dBc) 155 Frequency of harmonic distortion measurement (MHz) 0.01
Architecture Voltage FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 GBW (typ) (MHz) 120 BW at Acl (MHz) 120 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 115 Vn at flatband (typ) (nV√Hz) 2.5 Vn at 1 kHz (typ) (nV√Hz) 3.2 Iq per channel (typ) (mA) 2 Vos (offset voltage at 25°C) (max) (mV) 0.1 Rail-to-rail In to V-, Out Features Adjustable BW/IQ/IOUT, C-Load Drive, Shutdown Rating Catalog Operating temperature range (°C) -40 to 125 CMRR (typ) (dB) 117 Input bias current (max) (pA) 4000000 Offset drift (typ) (µV/°C) 0.5 Iout (typ) (mA) 100 2nd harmonic (dBc) 144 3rd harmonic (dBc) 155 Frequency of harmonic distortion measurement (MHz) 0.01
VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm)
  • High-Drive Mode:
    • GBW (G = 100): 120 MHz
    • Slew Rate: 115 V/µs
    • 16-Bit Settling at 4-V Step: 280 ns
    • Low Voltage Noise: 2.5 nV/√Hz at 10 kHz
    • Low Output Impedance: 1 Ω at 1 MHz
    • Offset Voltage: ±100 µV (max)
    • Offset Voltage Drift: ±3 µV/ºC (max)
    • LowQuiescent Current: 2 mA (typ)
  • Low-Power Mode:
    • GBW: 1 MHz
    • Low Quiescent Current: 270 µA (typ)
  • Power-Scalable Features:
    • Ultrafast Transition from Low-Power to High-Drive Mode: 170 ns
  • High AC and DC Precision:
    • Low Distortion: –122 dBc for HD2 and –140 dBc for HD3 at 100 kHz
    • Input Common-Mode Range Includes Negative Rail
    • Rail-to-Rail Output
    • Wide Temperature Range: Fully Specified from –40°C to +125°C
  • High-Drive Mode:
    • GBW (G = 100): 120 MHz
    • Slew Rate: 115 V/µs
    • 16-Bit Settling at 4-V Step: 280 ns
    • Low Voltage Noise: 2.5 nV/√Hz at 10 kHz
    • Low Output Impedance: 1 Ω at 1 MHz
    • Offset Voltage: ±100 µV (max)
    • Offset Voltage Drift: ±3 µV/ºC (max)
    • LowQuiescent Current: 2 mA (typ)
  • Low-Power Mode:
    • GBW: 1 MHz
    • Low Quiescent Current: 270 µA (typ)
  • Power-Scalable Features:
    • Ultrafast Transition from Low-Power to High-Drive Mode: 170 ns
  • High AC and DC Precision:
    • Low Distortion: –122 dBc for HD2 and –140 dBc for HD3 at 100 kHz
    • Input Common-Mode Range Includes Negative Rail
    • Rail-to-Rail Output
    • Wide Temperature Range: Fully Specified from –40°C to +125°C

The OPAx625 family of operational amplifiers are excellent 16-bit and 18-bit, SAR ADC drivers that are high precision with low THD and noise allow for a unique power-scalable solution. This family of devices is fully characterized and specified with a 16-bit settling time of 280 ns that enables a true 16-bit effective number of bits (ENOB). Along with a high dc precision of only 100 µV offset voltage, a wide gain-bandwidth product of 120 MHz, a low wideband noise of 2.5 nV/√Hz, this family is optimized for driving high-throughput, high-resolution SAR ADCs, such as the ADS88xx family of SAR ADCs.

The OPAx625 features two operating modes: high-drive and low-power. In the innovative low-power mode, the OPAx625 tracks the input signal allowing the OPAx625 to transition from low-power mode to high-drive mode at 16-bit ENOB within 170 ns.

The OPAx625 family is available in 6-pin SOT and 10-pin VSSOP packages and is specified for operation from –40°C to +125°C.

The OPAx625 family of operational amplifiers are excellent 16-bit and 18-bit, SAR ADC drivers that are high precision with low THD and noise allow for a unique power-scalable solution. This family of devices is fully characterized and specified with a 16-bit settling time of 280 ns that enables a true 16-bit effective number of bits (ENOB). Along with a high dc precision of only 100 µV offset voltage, a wide gain-bandwidth product of 120 MHz, a low wideband noise of 2.5 nV/√Hz, this family is optimized for driving high-throughput, high-resolution SAR ADCs, such as the ADS88xx family of SAR ADCs.

The OPAx625 features two operating modes: high-drive and low-power. In the innovative low-power mode, the OPAx625 tracks the input signal allowing the OPAx625 to transition from low-power mode to high-drive mode at 16-bit ENOB within 170 ns.

The OPAx625 family is available in 6-pin SOT and 10-pin VSSOP packages and is specified for operation from –40°C to +125°C.
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Top documentation Type Title Format options Date
* Data sheet OPAx625 High-Bandwidth, High-Precision, Low THD+N, 16-Bit and 18-Bit Analog-to-Digital Converter (ADC) Drivers datasheet (Rev. A) PDF | HTML Apr 20, 2015
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML Sep 30, 2014

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