LTC2271 - 16-Bit, 20Msps Serial Low Noise Dual ADC

Features

  • 2-Channel Simultaneous Sampling ADC
  • Serial LVDS Outputs: 1, 2 or 4 Bits per Channel
  • 84.1dB SNR (46μVRMS Input Referred Noise)
  • 99dB SFDR
  • Low Power: 185mW Total
  • 92mW per Channel
  • Single 1.8V Supply
  • Selectable Input Ranges: 1VP-P to 2.1VP-P
  • 200MHz Full-Power Bandwidth S/H
  • Shutdown and Nap Modes
  • Serial SPI Port for Configuration
  • Pin Compatible With
      LTC2190: 16-Bit, 25Msps, 104mW
  • 52-Lead (7mm × 8mm) QFN Package

Typical Application

LTC2271 Typical Application
LTC2271 Typical Application

Description

The LTC2271 is a 2-channel, simultaneous sampling 16-bit A/D converter designed for digitizing high frequency, wide dynamic range signals. It is perfect for demanding communications applications with AC performance that includes 84.1dB SNR and 99dB spurious free dynamic range (SFDR).

DC specs include ±1LSB INL (typ), ±0.2LSB DNL (typ) and no missing codes over temperature. The transition noise is 1.44LSBRMS.

To minimize the number of data lines the digital outputs are serial LVDS. Each channel outputs one bit, two bits or four bits at a time. The LVDS drivers have optional internal termination and adjustable output levels to ensure clean signal integrity.

The ENC+ and ENC inputs may be driven differentially or single ended with a sine wave, PECL, LVDS, TTL or CMOS inputs. An internal clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

QFN-52

LTC2271 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2271CUKG#PBF QFN 52 C $72.86 $51.00 View
LTC2271CUKG#TRPBF QFN 52 C $51.06 View
LTC2271IUKG#PBF QFN 52 I $84.29 $59.00 View
LTC2271IUKG#TRPBF QFN 52 I $59.06 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1763A-G LTC2271: 16-bit 20Msps Low Noise ADC, Serial LVDS Outputs, 5-170MHz, req DC1371 and DC1075. Contact Factory
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Companion Boards

Part Number Description Price Documentation
Contact Factory
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Click here to view our complete list of demo boards

Applications

  • Low Power Instrumentation
  • Software-Defined Radios
  • Portable Medical Imaging
  • Multi-Channel Data Acquisition

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Design Tools

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