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.
It features a very high sampling rate mode (Warp), a fast mode (Normal) for asynchronous conversion rate applications, and for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput.
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.
IN2, REF, INGND, REFGND to AGND
. . . . . . . . . . . . . . . . . . . . . . .AVDD + 0.3 V to AGND 0.3 V
Ground Voltage Differences
AGND, DGND, OGND . . . . . . . . . . . . . . . . . . .. . . . . . ±0.3 V
Supply Voltages
AVDD, DVDD, OVDD . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
AVDD to DVDD, AVDD to OVDD . . . . . . . . . . . . . . . . . . ±7 V
DVDD to OVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±7 V
Digital Inputs
Except the Databus D(7:4) . . . . .. . 0.3 V to DVDD + 3.0 V
Databus D(7:4) . . . . . . . . . . . . . .. . 0.3 V to OVDD + 3.0 V
Internal Power Dissipation3 . . . . . .. . . . . . . . . . . . . . 700 mW
Internal Power Dissipation4 . . . . . . . . . . . . . . . . . . . . . 2.5 W
Junction Temperature . . . . . . . . . . . . . . .. . . . . . . . . . . 150°C
Storage Temperature Range . . . . . . . . .. . . 65°C to +150°C
Lead Temperature Range
(Soldering 10 sec) . . . . . . . . . . . . . . . . .. . . . . . . . . . 300°C
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
2See Analog Input section.
3Specification is for the device in free air:
48-Lead LQFP; JA = 91°C/W, JC = 30°C/W.
4Specification is for device in free air:
48-Lead LFCSP; JA = 26°C/W.
Required Field 
