Overview
Features and Benefits
- Two-Channel Simultaneously Sampling ADC
- 76.8dB SNR
- 90dB SFDR
- Low Power: 370mW/308mW/200mW Total 185mW/154mW/100mW per Channel
- Single 1.8V Supply
- CMOS, DDR CMOS, or DDR LVDS Outputs
- Selectable Input Ranges: 1VP-P to 2VP-P
- 550MHz Full Power Bandwidth S/H
- Optional Data Output Randomizer
- Optional Clock Duty Cycle Stabilizer
- Shutdown and Nap Modes
- Serial SPI Port for Configuration
- 64-Pin (9mm × 9mm) QFN Package
Product Details
The LTC2185/LTC2184/LTC2183 are two-channel simultaneous sampling 16-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. They are perfect for demanding communications applications with AC performance that includes 76.8dB SNR and 90dB spurious free dynamic range (SFDR). Ultralow jitter of 0.07psRMS allows undersampling of IF frequencies with excellent noise performance.
DC specs include ±2LSB INL (typ), ±0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is 3.4LSBRMS.
The digital outputs can be either full rate CMOS, Double Data Rate CMOS, or Double Data Rate LVDS. A separate output power supply allows the CMOS output swing to range from 1.2V to 1.8V.
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.
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Portable Medical Imaging
- Multi-Channel Data Acquisition
- Nondestructive Testing
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
-
R538 Reliability Data3/26/2018PDF68 K
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DC1945A - Demo Manual5/30/2013PDF580K
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DC1620A - Demo Manual8/28/2012PDF459K
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High Speed ADC Portfolio8/30/2017PDF3M
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High Speed Amplifiers/ADC Drivers4/29/2015PDF152K
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16-/14-/12-Bit 125Msps Dual ADC Family11/12/2012PDF1M
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Low Power, 16-Bit Dual/Single ADCs11/12/2012PDF855K
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Get a 3dB SNR Boost Using a Dual ADC1/23/2018
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Uncompromised Linearity from the LTC2185 and ADA4927-13/10/2017
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36V Input, Low Output Noise, 5A μModule Regulator for Precision Data Acquisition Systems9/1/2013
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Near Noiseless ADC Drivers for Imaging7/1/2013 LT Journal
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Ultralow Power 16-Bit High Speed Signal Chain Solution for Portable Sampling Systems7/1/2011 LT Journal
Software & Systems Requirements
Evaluation Software
LinearLab Tools
A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.
Tools & Simulations
IBIS Models
IBS
LTC2185 IBIS model
86.00K
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC2185CUP#PBF | Material Declaration | Reliability Data | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | |
| LTC2185CUP#TRPBF | Material Declaration | Reliability Data | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | |
| LTC2185IUP#PBF | Material Declaration | Reliability Data | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | |
| LTC2185IUP#TRPBF | Material Declaration | Reliability Data | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) | |
| Wafer Fabrication Data | R538 Reliability Data |
Support & Discussions
LTC2185 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.