LTC2221 - 12-Bit, 135Msps ADCs

Features

Typical Application

LTC2221
LTC2221
Back to Top

Description

The LTC2220 and LTC2221 are 170Msps/135Msps, sampling 12-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2220/LTC2221 are perfect for demanding communications applications with AC performance that includes 67.5dB SNR and 80dB spurious free dynamic range for signals up to 170MHz. Ultralow jitter of 0.15psRMS allows undersampling of IF frequencies with excellent noise performance.

DC specs include ±0.4LSB INL (typ), ±0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 0.5LSBRMS.

The digital outputs can be either differential LVDS, or single-ended CMOS. There are three format options for the CMOS outputs: a single bus running at the full data rate or two demultiplexed buses running at half data rate with either interleaved or simultaneous update. A separate output power supply allows the CMOS output swing to range from 0.5V to 3.6V.

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

Back to Top

Packaging

QFN-64

LTC2221
Back to Top

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC2221CUP QFN 64 C $46.92 $33.92 View
LTC2221CUP#PBF QFN 64 C $46.92 $33.92 View
LTC2221CUP#TR QFN 64 C   $34.02 View
LTC2221CUP#TRPBF QFN 64 C   $34.02 View
LTC2221IUP QFN 64 I $58.65 $42.40 View
LTC2221IUP#PBF QFN 64 I $58.65 $42.40 View
LTC2221IUP#TR QFN 64 I   $42.50 View
LTC2221IUP#TRPBF QFN 64 I   $42.50 View
Buy Now
Request Samples
* 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.

Evaluation Kits

Part Number Description Price
DC750A-B LTC2221CUP | High Speed ADC, VCC = +3.3V, 135Msps, 12-Bit 1MHz < AIN < 100MHz (Requires DC890 and LVDS_TRANSFORMER) $200.00
DC750A-F LTC2221CUP | High Speed ADC, VCC = +3.3V, 135Msps, 12-Bit AIN > 100MHz (Requires DC890 and LVDS_TRANSFORMER) $200.00
DC890B High Speed USB Data Collection Board $300.00
DC890_LVDS_XFMR LVDS Power Transformer, goes with DC890B/ ADC LVDS demoboards $0.00
Buy Now


Back to Top

Applications

  • Wireless and Wired Broadband Communication
  • Cable Head-End Systems
  • Power Amplifier Linearization
  • Communications Test Equipment
Back to Top

Simulate

Linear Technology offers free software and demo boards that greatly simplify the task of testing and evaluating our data converters. To use these powerful tools with the LTC2221:

  1. Download the PScope (QuickEval II) System software. The PScope System is a USB-based product demonstration and data acquisition system for use with Linear Technologys high performance analog to digital converters. The software also includes web links to the appropriate device data sheets and provides an automatic update feature to keep the software current with the latest set of device drivers.

  2. Request the DC890 FastDAACS USB Controller either online or from your local sales representative. The DC890 FastDAACS USB Controller interfaces with the USB port of your computer and connects to the LTC2221 daughter cards.

  3. Request the DC750A-B or DC750A-F daughter card evaluation kit from your local sales representative. The DC750A-A and DC750A-F allow easy evaluation of the LTC2221 from your PC.
    • DC750A-B, Fin = 1MHz -100MHz
    • DC750A-F, Fin = 100MHz -250MHz
Back to Top