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AD1671

Analog Devices
Part Number AD1671
Manufacturer Analog Devices
Description Complete 12-Bit 1.25 MSPS Monolithic A/D Converter
Published Mar 23, 2005
Detailed Description a FEATURES Conversion Time: 800 ns 1.25 MHz Throughput Rate Complete: On-Chip Sample-and-Hold Amplifier and Voltage Refe...
Datasheet PDF File AD1671 PDF File

AD1671
AD1671

Overview
a FEATURES Conversion Time: 800 ns 1.
25 MHz Throughput Rate Complete: On-Chip Sample-and-Hold Amplifier and Voltage Reference Low Power Dissipation: 570 mW No Missing Codes Guaranteed Signal-to-Noise Plus Distortion Ratio fIN = 100 kHz: 70 dB Pin Configurable Input Voltage Ranges Twos Complement or Offset Binary Output Data 28-Pin DIP and 28-Pin Surface Mount Package Out of Range Indicator AIN1 AIN2 Complete 12-Bit 1.
25 MSPS Monolithic A/D Converter AD1671 FUNCTIONAL BLOCK DIAGRAM SHA OUT 5k UPO/BPO ENCODE VCC ACOM VEE VLOGIC DCOM S/H RANGE SELECT 5k X4 3-BIT FLASH DAC 3-BIT FLASH DAC COARSE 4-BIT FLASH 4 8-BIT LADDER MATRIX 3 REF IN REF OUT 2.
5V REF 3 CORRECTION LOGIC 8 FINE 4-BIT FLASH 4 LATCHES AD1671 REF COM OTR MSB 12 BIT 1 –12 DAV PRODUCT DESCRIPTION The AD1671 is a monolithic 12-bit, 1.
25 MSPS analog-todigital converter with an on-board, high performance sampleand-hold amplifier (SHA) and voltage reference.
The AD1671 guarantees no missing codes over the full operating temperature range.
The combination of a merged high speed bipolar/ CMOS process and a novel architecture results in a combination of speed and power consumption far superior to previously available hybrid implementations.
Additionally, the greater reliability of monolithic construction offers improved system reliability and lower costs than hybrid designs.
The fast settling input SHA is equally suited for both multiplexed systems that switch negative to positive full-scale voltage levels in successive channels and sampling inputs at frequencies up to and beyond the Nyquist rate.
The AD1671 provides both reference output and reference input pins, allowing the on-board reference to serve as a system reference.
An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the application.
The AD1671 uses a subranging flash conversion technique, with digital error correction for possible errors introduced in the first part of the conversio...


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