LTC1275 12-Bit, 300ksps Sampling A/D Converters with Reference

The LTC1273/LTC1275/LTC1276 are 300ksps, sampling 12-bit A/D converters that draw only 75mW from single 5V or ±5V supplies. These easy-to-use devices come complete with 600ns sample-and-holds, precision references and internally trimmed clocks. Unipolar and larcon version modes provide flexibility for various cations. They are built with LTBiCMOS (TM) switched capacitor technology.

These devices have 25ppm/°C (max) internal references. The LTC1275 converts 0V to 5V unipolar inputs from a single 5V supply. The LTC1275/LTC1276 convert ±2.5V and ±5V respectively from ±5V supplies. Maximum DC specifications include ±1/2LSB INL, ±3/4LSB DNL and 25ppm/°C full scale drift over temperature. Outstanding AC performance includes 70dB S/(N + D) and 77dB THD at the Nyquist input frequency of 150kHz.

The internal clock is trimmed for 2.7µs maximum conversion time. The clock automatically synchronizes to each sample command eliminating problems with asynchronous clock noise found in competitive devices. A high speed parallel interface eases connections to FIFOs, DSPs and microprocessors

产品特点 Features Single Supply 5V or ±5V Operation 300ksps Sample Rate 75mW (Typ) Power Dissipation On-Chip 25ppm/°C Reference Internal Synchronized Clock; No Clock Required High Impedance Analog Input 70dB S/(N + D) and 77dB THD at Nyquist ±1/2LSB INL and ±3/4LSB DNL Max (A Grade) ESD Protected On All Pins 24-Pin Narrow DIP and SW Packages Variety of Input Ranges: 0V to 5V (LTC1273) ±2.5V (LTC1275) ±5V (LTC1276) 封装	应用 High Speed Data Acquisition Digital Signal Processing Multiplexed Data Acquisition Systems Audio and Telecom Processing Spectrum Analysis 典型应用图参数

产品特点 Features

Single Supply 5V or ±5V Operation
300ksps Sample Rate
75mW (Typ) Power Dissipation
On-Chip 25ppm/°C Reference
Internal Synchronized Clock; No Clock Required
High Impedance Analog Input
70dB S/(N + D) and 77dB THD at Nyquist
±1/2LSB INL and ±3/4LSB DNL Max (A Grade)
ESD Protected On All Pins
24-Pin Narrow DIP and SW Packages
Variety of Input Ranges:
0V to 5V (LTC1273)
±2.5V (LTC1275)
±5V (LTC1276)

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

参数

LTC1275 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) *
LTC1275ACN	PDIP	24	C	$24.35	$19.20
LTC1275ACN#PBF	PDIP	24	C	$24.35	$19.20
LTC1275ACSW	SO	24	C	$25.15	$19.60
LTC1275ACSW#PBF	SO	24	C	$25.15	$19.60
LTC1275ACSW#TR	SO	24	C		$19.70
LTC1275ACSW#TRPBF	SO	24	C		$19.70
LTC1275BCN	PDIP	24	C	$15.65	$12.35
LTC1275BCN#PBF	PDIP	24	C	$15.65	$12.35
LTC1275BCSW	SO	24	C	$17.25	$13.60
LTC1275BCSW#PBF	SO	24	C	$17.25	$13.60
LTC1275BCSW#TR	SO	24	C		$13.70
LTC1275BCSW#TRPBF	SO	24	C		$13.70

LTC1275 数据手册及相关资料下载

数据手册(英文) : LTC1273/LTC1275/LTC1276 - 12-Bit, 300ksps Sampling A/D Converters with Reference.PDF
规格变更通知书 : LTC1273/LTC1275/LTC1276 - SPECIFICATION NOTICE.PDF
应用指南 (英文) : AN62 - Data Acquisition Circuit Collection.PDF
设计要点 (英文) : DN66 - New 5V and 3V, 12-Bit ADCs Sample at 300kHz on 75mW and 140kHz on 12mW.PDF
设计要点 (英文) : DN88 - New 500ksps and 600ksps ADCs Match Needs of High Speed Applications.PDF
可靠性数据 : R107 Reliability Data .PDF