LTC1743 12-Bit, 50Msps ADC

The LTC®1743 is a 50Msps, sampling 12-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. Pin selectable input ranges of ±1V and ±1.6V along with a resistor programmable mode allow the LTC1743’s input range to be optimized for a wide variety of applications.

The LTC1743 is perfect for demanding communications applications with AC performance that includes 72.5dB SNR and 85dB spurious free dynamic range. Ultralow jitter of 0.3psRMS allows undersampling of IF frequencies with excellent noise performance. DC specs include ±1LSB maximum INL and ±0.8LSB DNL over temperature.

The digital interface is compatible with 5V, 3V and 2V logic systems. The ENC and ENC inputs may be driven differentially from PECL, GTL and other low swing logic families or from single-ended TTL or CMOS. The low noise, high gain ENC and ENC inputs may also be driven by a sinusoidal signal without degrading performance. A separate output power supply can be operated from 0.5V to 5V, making it easy to connect directly to any low voltage DSPs or FIFOs.

The 48-pin TSSOP package with a flow-through pinout simplifies the board layout

产品特点 Features
  • Sample Rate: 50Msps
  • 72.5dB SNR and 85dB SFDR (3.2V Range)
  • 71dB SNR and 90dB SFDR (2V Range)
  • No Missing Codes
  • Single 5V Supply
  • Power Dissipation: 1000mW
  • Selectable Input Ranges: ±1V or ±1.6V
  • 150MHz Full Power Bandwidth S/H
  • Pin Compatible Family
    25Msps: LTC1746 (14-Bit), LTC1745 (12-Bit)
    50Msps: LTC1744 (14-Bit), LTC1743 (12-Bit)
    65Msps: LTC1742 (14-Bit), LTC1741 (12-Bit)
    80Msps: LTC1748 (14-Bit), LTC1747 (12-Bit)
  • 48-Pin TSSOP Package
封装
LTC1743 封装
应用
  • Telecommunications
  • Receivers
  • Cellular Base Stations
  • Spectrum Analysis
  • Imaging Systems
典型应用图
LTC1743 典型应用
LTC1743 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) *
LTC1743CFW TSSOP 48 C $16.70  $12.75 
LTC1743CFW#PBF TSSOP 48 C $16.70  $12.75 
LTC1743CFW#TR TSSOP 48 C $32.25  $24.65 
LTC1743CFW#TRPBF TSSOP 48 C $24.75 
LTC1743IFW TSSOP 48 I $37.90  $29.00 
LTC1743IFW#PBF TSSOP 48 I $37.90  $29.00 
LTC1743IFW#TR TSSOP 48 I $29.10 
LTC1743IFW#TRPBF TSSOP 48 I $29.10 
LTC1743 演示电路板
器件型号 描述
DC520B-K LTC1743CFW | 12-Bit / 50 Msps Low Noise ADC (requires DC718 controller)
LTC1743 Companion Boards
器件型号 描述
DC718C USB Data Acquisition Controller, for QuikEval -II Evaluation Kits
LTC1743 数据手册及相关资料下载
  1. 数据手册 : LTC1743 - 12-Bit, 50Msps ADC .PDF
  2. 应用指南 : AN71 - The Care and Feeding of High Performance ADCs.PDF
  3. 可靠性数据 : R461 Reliability Data .PDF
  4. 产品选型卡 : Differential Amplifiers/High Speed ADC Drivers .PDF
  5. LT Journal: Dec 2002 A 14-Bit ADC that is Both Fast and Low Noise.PDF