AD7671 16-Bit, 1 MSPS CMOS ADC _ BDTIC a Leading Distributor in China

AD7671 16-Bit, 1 MSPS CMOS ADC

Fast Throughput The AD7671 is a very high speed (1 MSPS in Warp Mode and 800 kSPS in Normal Mode), charge redistribution, 16-bit SAR ADC. Single-Supply Operation The AD7671 operates from a single 5 V supply, dissipates only 112 mW typical, even lower when a reduced throughput is used with the reduced power mode (Impulse) and a powerdown mode. Superior INL The AD7671 has a maximum integral nonlinearity of 2.5 LSB with no missing 16-bit code. Serial or Parallel Interface Versatile parallel (8 bits or 16 bits) or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic. Applications

The AD7671 is a 16-bit, 1 MSPS, 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 AD7671 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 and is available in a 48-lead LQFP and a tiny 48-lead LFCSP, with operation specified from –40°C to +85°C.

Product Highlights

Fast Throughput The AD7671 is a very high speed (1 MSPS in Warp Mode and 800 kSPS in Normal Mode), charge redistribution, 16-bit SAR ADC.

Single-Supply Operation The AD7671 operates from a single 5 V supply, dissipates only 112 mW typical, even lower when a reduced throughput is used with the reduced power mode (Impulse) and a powerdown mode.

Superior INL The AD7671 has a maximum integral nonlinearity of 2.5 LSB with no missing 16-bit code.

Serial or Parallel Interface Versatile parallel (8 bits or 16 bits) or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic.

Applications

Features and Benefits

Throughput
1 MSPS (Warp Mode)
800 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 @ 250 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

THD: –100 dB Typ @ 250 kHz
Both AC and DC Specifications
No Pipeline Delay
Parallel (8/16 Bits) and Serial 5 V/3 V Interface
SPI®/QSPI™/MICROWIRE™/DSP Compatible
Single 5 V Supply Operation
Power Dissipation
112 mW Typical
15 µW @ 100 SPS

Analog to Digital Converters

A/D Converters

Data Sheets

Document	note
AD7671: 16-Bit, 1 MSPS CMOS ADC Data Sheet (Rev. C)	PDF 660 kB

Application Notes

Document	note
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. B)	PDF 401 kB
AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)	PDF 299 kB
AN-932: Power Supply Sequencing (Rev. 0)	PDF 95 kB
AN-594: Modifying the Input Voltage Range of the AD7663, AD7665 or AD7671 PulSAR 16-Bit ADCs (Rev. A) PulSAR® Input Range Software	PDF 141 kB

Product Highlight

Document	note
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog	PDF 1885 kB

Technical Books

Document	note

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD7671ACPZ Production	48 ld LFCSP 7x7mm (5.1EP)	OTH 260	-40 to 85C	31.29	28.29	Y
AD7671ASTZ Production	48 ld LQFP	OTH 250	-40 to 85C	31.29	28.29	Y
AD7671ASTZRL Production	48 ld LQFP	REEL 2000	-40 to 85C	0	28.29	Y