OPA843 Wideband, Low Distortion, Medium Gain, Voltage Feedback Operational Amplifier | TI.com

OPA843
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Wideband, Low Distortion, Medium Gain, Voltage Feedback Operational Amplifier

 

Description

The OPA843 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a high Gain Bandwidth (GBW), two gain-stage design, the OPA843 gives a medium gain range device with exceptional dynamic range. The "classic" differential input complements this high dynamic range with DC precision beyond most high-speed amplifier products. Very low input offset voltage and current, high Common-Mode Rejection Ratio (CMRR) and Power-Supply Rejection Ratio (PSRR), and high open-loop gain combine to give a high DC precision amplifier along with low noise and high 3rd-order intercept.

12- to 16-bit converter interfaces will benefit from this combination of features. High-speed transimpedance applications can be implemented with exceptional DC precision as well. Differential configurations using two OPA843s can deliver very low distortion to high output voltages, as shown below.

Features

  • HIGH BANDWIDTH: 260MHz (G = +5)
  • GAIN BANDWIDTH PRODUCT: 800MHz
  • LOW INPUT VOLTAGE NOISE: 2.0nV/√Hz
  • VERY LOW DISTORTION: –96dBc (5MHz)
  • HIGH OPEN-LOOP GAIN: 110dB
  • FAST 12-BIT SETTLING: 10.5ns (0.01%)
  • LOW INPUT OFFSET VOLTAGE: 300µV
  • OUTPUT CURRENT: ±100mA
  • APPLICATIONS
    • ADC/DAC BUFFER AMPLIFIER
    • LOW DISTORTION "IF" AMPLIFIER
    • ACTIVE FILTERS
    • LOW-NOISE RECEIVER
    • WIDEBAND TRANSIMPEDANCE
    • TEST INSTRUMENTATION
    • PROFESSIONAL AUDIO
    • OPA643 UPGRADE

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Parametrics

Compare all products in High-speed op amps (GBW>=50MHz) Email Download to Excel
Part number Order Architecture Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) CMRR (Typ) (dB) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) GBW (Typ) (MHz) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
OPA843 Order now Voltage FB     1     8     12     500     3     1000     2     2     20.2     1.2     No     Decompensated     Catalog     -40 to 85     SOIC | 8
SOT-23 | 5    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
95     35000000     4     800     100     76     102     5    
OPA842 Order now Voltage FB     1     7     12     350     1     400     2.7     2.6     20.2     1.2     No       Catalog     -40 to 85     SOIC | 8
SOT-23 | 5    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
95     35000000     4     200     100     80     97     5    
OPA846 Order now Voltage FB     1     10     12     500     7     625     1.2     1.2     12.6     0.6     No     Decompensated     Catalog     -40 to 85     SOIC | 8
SOT-23 | 5    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
110     19000000