The AD7661 is a 16-bit, 100kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. The part contains a high-speed 16-bit sampling ADC, an internal conversion clock, internal reference, error correction circuits, and both serial and parallel system interface ports.
It is fabricated using Analog Devices’ high-performance, 0.6 micron CMOS process, with correspondingly low cost and is available in a 48-lead LQFP and a tiny 48-lead LFCSP with operation specified from –40°C to +85°C.
**APPLICATIONS**
Data acquisition
Medical instruments
Digital signal processing
Spectrum analysis
Instrumentation
Battery-powered systems
Process control
### Features and Benefits
2.5 V Internal Reference:
Typical Drift 3 ppm/°C
\- Guaranteed Max Drift: 15 ppm/°C
Throughput: 100 kSPS
INL: ±2.5 LSB Max (±0.0038% of Full Scale)
16 Bits Resolution with No Missing Codes
S/(N+D): 88 dB max @ 20 kHz; THD: -96 dB max @ 20 kHz
