Features: Throughput:
570 kSPS (Warp Mode)
500 kSPS (Normal Mode)
INL: ±2.5 LSB Max (±0.0038% of Full Scale)
16-Bit Resolution with No Missing Codes
S/(N+D): 90 dB Typ @ 45 kHz
THD: 100 dB Typ @ 45 kHz
Analog Input Voltage Ranges
Bipolar:±10 V, ±5 V, ±2.5 V
Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V
Both AC and DC Specifications
No Pipeline Delay
Parallel (8/16 Bits) and Serial 5 V/3 V Interface
SPI®/QSPITM/MICROWIRETM/DSP Compatible
Single 5 V Supply Operation
Power Dissipation
64 mW Typical
15 W @ 100 SPS
Power-Down Mode: 7 W Max
Package: 48-Lead Quad Flat Pack (LQFP)
Package:48-Lead Chip Scale Package (LFCSP)
Pin-to-Pin Compatible Upgrade of the AD7664/AD7663ApplicationData Acquisition
Communication
Instrumentation
Spectrum Analysis
Medical Instruments
Process ControlPinout
SpecificationsAnalog Inputs
IND2, INC2, INB2 . . . . . . . . . . . . . . . . 11 V to +30 V
INA, REF, INGND, REFGND
. . . . . . . . . . . . . . . . . . AGND 0.3 V to AVDD + 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 . . . . . . . . . . . . . . . . . . 0.3 V to + 7 V
Digital Inputs . . . . . . . . . . . . . . 0.3 V to DVDD + 0.3 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
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 indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
2See Analog Inputs section.
3Specification is for 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: JC = 26°C/W.
DescriptionThe AD7665 is a 16-bit, 570 kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains a high speed 16-bit sampling ADC, a resistor input scaler that allows various input ranges, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.
The AD7665 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.
AD7665 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.
AD7665 is fabricated using Analog Devices' high performance, 0.6 micron CMOS process and is available in a 48-lead LQFP and a tiny 48-lead LFCSP with operation specified from 40°C to +85°C.
AD7665 Data Sheet
