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	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
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

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

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

数据手册(英文) : LTC1278 - 12-Bit, 500ksps Sampling A/D Converter with Shutdown.PDF
应用指南 (英文) : AN62 - Data Acquisition Circuit Collection.PDF
应用指南 : AN71 - The Care and Feeding of High Performance ADCs.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