| Architecture | Voltage FB |
| Number of channels (#) | 1 |
| Total supply voltage (Min) (+5V=5, +/-5V=10) | 8 |
| Total supply voltage (Max) (+5V=5, +/-5V=10) | 12 |
| GBW (Typ) (MHz) | 800 |
| BW @ Acl (MHz) | 500 |
| Acl, min spec gain (V/V) | 3 |
| Slew rate (Typ) (V/us) | 1000 |
| Vn at flatband (Typ) (nV/rtHz) | 2 |
| Vn at 1 kHz (Typ) (nV/rtHz) | 2 |
| Iq per channel (Typ) (mA) | 20.2 |
| Vos (offset voltage @ 25 C) (Max) (mV) | 1.2 |
| Rail-to-rail | No |
| Features | Decompensated |
| Rating | Catalog |
| Operating temperature range (C) | -40 to 85 |
| CMRR (Typ) (dB) | 95 |
| Input bias current (Max) (pA) | 35000000 |
| Offset drift (Typ) (uV/C) | 4 |
| Output current (Typ) (mA) | 100 |
| 2nd harmonic (dBc) | 76 |
| 3rd harmonic (dBc) | 102 |
| Frequency of harmonic distortion measurement (MHz) | 5 |
- 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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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.
