Product Details
●The AD7674 is an 18-bit, 800 kSPS, charge redistribution, successive approximation register (SAR) fully differential analog-to-digital converter (ADC) that operates on a single 5 V power supply. The device 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.
●The device is available in a 48-lead LQFP or a 48-lead LFCSP with operation specified from −40°C to +85°C.
●Product Highlights
● 1. High Resolution, Fast Throughput. The AD7674 is an 800 kSPS, charge redistribution, 18-bit, SAR ADC (no latency).
● 2. Excellent Accuracy. The AD7674 has a maximum integral nonlinearity of 2.5 LSB with no missing 18-bit codes.
● 3. Serial or Parallel Interface. Versatile parallel (18-, 16- or 8-bit bus) or 3-wire serial interface arrangement compatible with both 3 V and 5 V logic.
●Applications
● CT scanners
● High dynamic data acquisition
● Geophone and hydrophone sensors
● ∑-∆ replacement (low power, multichannel)
● Instrumentation
● Spectrum analysis
● Medical instruments
●### Features and Benefits
● 18-bit resolution with no missing codes
● No pipeline delay (SAR architecture)
● Differential input range: ±VREF (VREF up to 5 V)
● Throughput
● 800 kSPS (warp mode)
● 666 kSPS (normal mode)
● 570 kSPS (impulse mode)
● INL: ±2.5 LSB max (±9.5 ppm of full scale)
● Dynamic range : 103 dB typ (VREF = 5 V)
● SINAD: 100 dB typ at 2 kHz (VREF = 5 V)
● Parallel (18-, 16-, or 8-bit bus) and serial 5 V/3 V interface
● SPI/QSPI™/MICROWIRE/DSP compatible
● On-board reference buffer
● Single 5 V supply operation
● See data sheet for additional features
