AD8205: Single Supply 42V System Difference Amplifier
The AD8205 is a high-performance, single-supply difference amplifier with a wide input common mode voltage (CMV) operational range of -2 V to 65 V, which allows the chip to measure small ...More
AD8205: Single Supply 42V System Difference Amplifier
Product Description
The AD8205 is a high-performance, single-supply difference amplifier with a wide input common mode voltage (CMV) operational range of -2 V to 65 V, which allows the chip to measure small differential voltages--such as across a shunt resistor--in the presence of high voltages (large CMV). Additionally, the device can survive over an input CMV range of -5 V to 70 V. Excellent dc performance over temperature keeps errors in the measurement loop to a minimum. Offset drift is less than 20 microV/degrees C, and gain drift is below 20 ppm/degrees C (up to 125 degrees C). The AD8205 also has very high common-mode rejection of 80 dB, which extends from dc up to 100 kHz. The part’s ability to reject high, common mode voltages while reading small differential voltages eliminates error sources commonly associated with current sensing in electro-mechanical systems. The AD8205 also is well suited for industrial applications that measure small differential voltages in the presence of high CMV. Many industrial current sensing applications, such as hydraulic systems and motor control, already require this extended CMV range.
Features
- Ideal for current shunt applications
- High Common-mode voltage range
- Gain = 50
- Wide operating temperature range
- Adjustable offset
- Available in SOIC and die form
- EXCELLENT AC AND DC
PERFORMANCE
15 µV/°C offset drift
30 ppm/°C gain drift
80 dB CMRR dc to 20 kHz
Specifications
| Single/Dual Supply | Single |
| Voltage Supply (Vmax) | +5V |
| Gain Setting Method | fixed |
| Gain Range (min to max) | 50 |
| Bandwidth G=10 (kHz typ) | 50kHz |
| CMRR (dB) | 78dB |
| Vnoise RTI 1-10 Hz µVp-p | 20µV p-p |
| Temperature Range | -40 to +125 |
| Gain Error (%) max | ±1% |
| Supply Current (max) | 2mA |
| Package | Die,SOIC |
| Vosi (µV) | 2000µV |
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| Part# | Description | Single/Dual Supply | Vcc-Vee | Gain Setting Method | Bandwidth G=10 (kHz typ) | Gain min. | Gain max. | Min CMRR @ 60 Hz Min Gain | Min CMRR @ 60Hz Max Gain | Vnoise RTI 1-10 Hz µVp-p | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AD522 | Diff Amp | Dual | 10V to 36V | Resistor | 3 | 1 | 1,000 | 75dB | 100dB | 4 | - |
| AD524 | Precision IA | Dual | 12V to 36V | Pin | 400 | 1 | 1,000 | 70dB | 110dB | 0.3 | $9.52 |
| AD526 | Software Programmable | Dual | 9V to 33V | Software | 350 | 1 | 16 | - | - | 3 | $6.39 |
| AD620 | General Purpose IA | Dual | 4.6V to 36V | Resistor | 800 | 1 | 10,000 | 73dB | 110dB | 0.28 | $3.18 |
| AD621 | Precision IA | Dual | 4.6V to 18V | Pin | 800 | 10 | 100 | 93dB | 110dB | 0.28 | $4.09 |
| AD622 | Low Cost IA | Dual | 5.2V to 36V | Resistor | 800 | 1 | 1,000 | 66dB | 103dB | 0.3 | $2.51 |
| AD623 | S.S R-R IA | Single/Dual | 2.7V to 12V | Resistor | 100 | 1 | 1,000 | 70dB | 105dB | 2 | $1.40 |
| AD624 | Precision IA | Dual | 12V to 36V | Pin | 400 | 1 | 1,000 | 70dB | 110dB | 0.3 | $11.93 |
| AD625 | Programmable Gain IA | Dual | 12V to 36V | Resistor | 400 | 1 | 10,000 | 70dB | 110dB | 0.3 | $8.78 |
| AD626 | Diff Amp | Single/Dual | 2.4V to 12V | Pin | 100 | 10 | 100 | 55dB | 55dB | 2 | $3.70 |
| AD627 | Micropower IA | Single/Dual | 2.2V to 36V | Resistor | 30 | 5 | 1,000 | 77dB | 77dB | 1.2 | $2.56 |
| AD628 | High CMV DA | Single/Dual | 4.5V to 36V | Pin, Resistor | 600 | 0.1 | 100 | 75dB | 75dB | 15 | $1.78 |
| AD629 | High CMV DA |