AD7664*

Features:

Throughput:
     570 kSPS (Warp Mode)
     500 kSPS (Normal Mode)
INL: ±2.5 LSB Max (±0.0038% of Full-Scale)
16 Bits Resolution with No Missing Codes
S/(N+D): 90 dB Typ @ 10 kHz
THD: 100 dB Typ @ 10 kHz
Analog Input Voltage Range: 0 V to 2.5 V
Both AC and DC Specifications
No Pipeline Delay
Parallel and Serial 5 V/3 V Interface
Single 5 V Supply Operation
Power Dissipation
    97 mW Typical,
    21 W @ 100 SPS
Power-Down Mode: 7 W Max
Package: 48-Lead Quad Flat Pack (LQFP)
Pin-to-Pin Compatible Upgrade of the AD7660 


Application

Data Acquisition
Instrumentation
Digital Signal Processing
Spectrum Analysis
Medical Instruments
Battery-Powered Systems
Process Control


Pinout




Specifications

Analog Inputs
  IN2, REF . . . . . . . . . . . . . . . .. . AVDD + 0.3 V to AGND 0.3 V
  INGND, REFGND . . . . . . . . . . . . . . . . .. .. . . .  . . AGND ± 0.3 V
Ground Voltage Differences
  AGND, DGND, OGND . . . . . . . . . . . . . ... . . . . . . . . . . . . ±0.3 V
Supply Voltages
  AVDD, DVDD, OVDD . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 7 V
  AVDD to DVDD, AVDD to OVDD . . . . . . . . . . . .. . . . . . . . . ±7 V
  DVDD to OVDD . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . ±7 V
  Digital Inputs
    Except the Data Bus D(7:4) . . . . . . . 0.3 V to DVDD + 0.3 V
    Data Bus Inputs D(7:4) . . . . . . . . .. .0.3 V to OVDD + 0.3 V
    Junction Temperature . . . . . . . . . . .  . . . . . . . . . . . . . 150°C
    Storage Temperature Range . . . . . .  . . . 65°C to +150°C
    Lead Temperature Range
    (Soldering 10 sec) . . . . . . . . . . . . . ..  . . . .  . . . . . . . . 300°C


Description

The AD7664 is a 16-bit, 570 kSPS, 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, error correction circuits, and both serial and parallel system interface ports.

The AD7664 is hardware factory calibrated and is comprehensively tested to ensure such ac parameters as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.

AD7664 features a very high sampling rate mode (Warp) and, for asynchronousconversion rate applications, a fast mode (Normal) and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput.

AD7664 is fabricated using Analog Devices' high-performance, 0.6 micron CMOS process, with correspondingly low cost and is available in a 48-lead LQFP with operation specified from 40°C to +85°C.