器件名称: AD1671J
功能描述: Complete 12-Bit 1.25 MSPS Monolithic A/D Converter
文件大小: 394.34KB 共16页
简 介: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 leve……
