AD7641 18-Bit, 2 MSPS SAR ADC
The AD7641 is a 18-bit, 2 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 18-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp) and a fast mode (Normal) for asynchronous conversion rate applications.
The AD7641 is hardware factory calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD) in addition to the more traditional dc parameters of gain, offset and linearity.
Operation is specified from −40°C to +85°C.
Applications
- Medical instruments
- High dynamic data acquisition
- Instrumentation
- Spectrum analysis
- ATE
Features and Benefits- 18-bit resolution with no missing codes
- 2.5 V internal low drift reference
Throughput:
2 MSPS (Warp mode)
1.5 MSPS (Normal mode) - Differential input range: ± VREF
(VREF up to 2.5 V) - INL: ±2 LSB typical
- No pipeline delay (SAR architecture)
- Parallel (18-, 16-, or 8-bit bus)
- Serial 5 V/3.3 V/2.5 V interface
- SPI®/QSPI™/MICROWIRE™/DSP compatible
- On-board low drift reference with buffer and temperature sensor
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Data Sheets
Application Notes
Product Highlight
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
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| AD7641BCPZ Production | 48 ld LFCSP 7x7mm (5.1EP) | OTH 260 | -40 to 85C | 32.44 | 29.33 | Y |
| AD7641BCPZRL Last Time Buy | 48 ld LFCSP 7x7mm (5.1EP) | REEL 2500 | -40 to 85C | 0 | 29.33 | Y |
| AD7641BSTZ Production | 48 ld LQFP | OTH 250 | -40 to 85C | 32.44 | 29.33 | Y |
| AD7641BSTZRL Production | 48 ld LQFP | REEL 2000 | -40 to 85C | 0 | 29.33 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
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| EVAL-AD7641EDZ | AD7641 Evaluation Board | 151.8 | Y |
| EVAL-CED1Z | Converter Evaluation and Development Board | 249 | Y |
Reference Materials
