LTC1278-4 12-Bit, 500ksps Sampling A/D Converter with Shutdown

The LTC™1278 is a 1.6µs, 500ksps, sampling 12-bit A/D converter that draws only 75mW from a single 5V or ±5V supplies. This easy-to-use device comes complete with a 200ns sample-and-hold, a precision reference and an internally trimmed clock. Unipolar and bipolar conversion modes add to the flexibility of the ADC. The low power dissipation is made even more attractive by a 8.5mW power-down feature. Instant wake-up from shutdown allows the converter to be powered down even during brief inactive periods. The LTC1278 converts 0V to 5V unipolar inputs from a single 5V supply and ±2.5V bipolar inputs from ±5V supplies. Maximum DC specs include ±1LSB INL and ±1LSB DNL. Outstanding guaranteed AC performance includes 70dB S/(N + D) and 78dB THD at the input frequency of 100kHz over temperature. The internal clock is trimmed for 1.6µs conversion time. The clock automatically synchronizes to each sample command, eliminating problems with asynchronous clock noise found in competitive devices. A separate convert start input and a data ready signal (BUSY) ease connections to FIFOs, DSPs and microprocessors

产品特点 Features
  • Single Supply 5V or ±5V Operation
  • Two Speed Grades,500ksps (LTC1278-5) 400ksps (LTC1278-4)
  • 70dB S/(N + D) and 74dB THD at Nyquist
  • No Missing Codes Over Temperature
  • 75mW (Typ) Power Dissipation
  • Power Shutdown with Instant Wake-Up
  • Internal Reference Can Be Overdriven Externally
  • Internal Synchronized Clock; No Clock Required
  • High Impedance Analog Input
  • 0V to 5V or ±2.5V Input Range
  • New Flexible, Friendly Parallel Interface to DSPs and FIFOs
  • 24-Pin SOL Packages
封装
LTC1278-4 封装
应用
  • High Speed Data Acquisition
  • Digital Signal Processing
  • Multiplexed Data Acquisition Systems
  • Audio and Telecom Processing
  • Spectrum Analysis
典型应用图
LTC1278-4 典型应用
参数
LTC1278-4 参数
LTC1278-4 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LTC1278-4CN PDIP 24 C $16.00  $12.65 
LTC1278-4CN#PBF PDIP 24 C $16.00  $12.65 
LTC1278-4CSW SO 24 C $16.00  $12.65 
LTC1278-4CSW#PBF SO 24 C $16.00  $12.65 
LTC1278-4CSW#TR SO 24 C $12.75 
LTC1278-4CSW#TRPBF SO 24 C $12.75 
LTC1278-4IN PDIP 24 I $18.35  $14.45 
LTC1278-4IN#PBF PDIP 24 I $18.35  $14.45 
LTC1278-4ISW SO 24 I $18.35  $14.45 
LTC1278-4ISW#PBF SO 24 I $18.35  $14.45 
LTC1278-4ISW#TR SO 24 I $14.55 
LTC1278-4ISW#TRPBF SO 24 I $14.55 
LTC1278-5CSW SO 24 C $17.10  $13.50 
LTC1278-5CSW#PBF SO 24 C $17.10  $13.50 
LTC1278-5CSW#TR SO 24 C $13.60 
LTC1278-5CSW#TRPBF SO 24 C $13.60 
LTC1278-5ISW SO 24 I $19.60  $15.45 
LTC1278-5ISW#PBF SO 24 I $19.60  $15.45 
LTC1278-5ISW#TR SO 24 I $15.55 
LTC1278-5ISW#TRPBF SO 24 I $15.55 
LTC1278-4 数据手册及相关资料下载
  1. 数据手册(英文) : LTC1278 - 12-Bit, 500ksps Sampling A/D Converter with Shutdown.PDF
  2. 应用指南 (英文) : AN62 - Data Acquisition Circuit Collection.PDF
  3. 应用指南 : AN71 - The Care and Feeding of High Performance ADCs.PDF
  4. 设计要点 (英文) : DN88 - New 500ksps and 600ksps ADCs Match Needs of High Speed Applications.PDF
  5. 可靠性数据 : R107 Reliability Data .PDF