LTC2377-20
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LTC2377-20

20-Bit, 500ksps, Low Power SAR ADC with 0.5ppm INL

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Info: : PRODUCTION tooltip
Part Details
Part Models 8
1ku List Price Starting From $30.25
Features
  • 500ksps Throughput Rate
  • ±0.5ppm INL (Typ)
  • Guaranteed 20-Bit No Missing Codes
  • Low Power: 10.5mW at 500ksps, 10.5μW at 500sps
  • 104dB SNR (Typ) at fIN = 2kHz
  • –125dB THD (Typ) at fIN = 2kHz
  • Digital Gain Compression (DGC)
  • Guaranteed Operation to 85°C
  • 2.5V Supply
  • Fully Differential Input Range ±VREF
  • VREF Input Range from 2.5V to 5.1V
  • No Pipeline Delay, No Cycle Latency
  • 1.8V to 5V I/O Voltages
  • SPI-Compatible Serial I/O with Daisy-Chain Mode
  • Internal Conversion Clock
  • 16-Lead MSOP and 4mm × 3mm DFN Packages
Additional Details
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The LTC2377-20 is a low noise, low power, high speed 20-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2377-20 has a ±VREF fully differential input range with VREF ranging from 2.5V to 5.1V. The LTC2377-20 consumes only 10.5mW and achieves ±2ppm INL maximum, no missing codes at 20 bits with 104dB SNR.

The LTC2377-20 has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring a daisy-chain mode. The fast 500ksps throughput with no cycle latency makes the LTC2377-20 ideally suited for a wide variety of high speed applications. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2377-20 automatically powers down between conversions, leading to reduced power dissipation that scales with the sampling rate.

The LTC2377-20 features a unique digital gain compression (DGC) function, which eliminates the driver amplifier’s negative supply while preserving the full resolution of the ADC. When enabled, the ADC performs a digital scaling function that maps zero-scale code from 0V to 0.1 • VREF and full-scale code from VREF to 0.9 • VREF. For a typical reference voltage of 5V, the full-scale input range is now 0.5V to 4.5V, which provides adequate headroom for powering the driving amplifier from a single 5.5V supply.

Applications

  • Medical Imaging
  • High Speed Data Acquisition
  • Portable or Compact Instrumentation
  • Industrial Process Control
  • Low Power Battery-Operated Instrumentation
  • ATE
Part Models 8
1ku List Price Starting From $30.25

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC2377CDE-20#PBF
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LTC2377CMS-20#PBF
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LTC2377CMS-20#TRPBF
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LTC2377IDE-20#PBF
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LTC2377IDE-20#TRPBF
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LTC2377IMS-20#PBF
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LTC2377IMS-20#TRPBF
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Product Lifecycle

PCN

Feb 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC2377CMS-20#PBF

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Filter by Model

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Part Models

Product Lifecycle

PCN

Feb 4, 2020

- 20_0132

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Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC2377CMS-20#PBF

PRODUCTION

LTC2377CMS-20#TRPBF

PRODUCTION

LTC2377IMS-20#PBF

PRODUCTION

LTC2377IMS-20#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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DC1925A-B

LTC2377-20 Demo Board | 20-Bit, 500ksps, SAR ADC with 104dB SNR. Requires DC2026

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DC1925A-B

LTC2377-20 Demo Board | 20-Bit, 500ksps, SAR ADC with 104dB SNR. Requires DC2026

LTC2377-20 Demo Board | 20-Bit, 500ksps, SAR ADC with 104dB SNR. Requires DC2026

Product Detail

The LTC2378-20, LTC2377-20 and LTC2376-20 are 20‑bit, low power, low noise SAR ADCs with serial outputs that operate from a single 2.5V supply. The demo manual refers to the LTC2378-20 but applies to all parts in the family, the only difference being the maximum sample rate. The LTC2378-20 supports a ±5V fully differential input range with a 104dB SNR, consumes only 21mW and achieves ±2ppm INL max with no missing codes at 20 bits. The DC1925A demonstrates the DC and AC performance of the LTC2378-20 in conjunction with the DC590 QuikEval and DC890 PScope data collection boards. Use the DC590 to demonstrate DC performance such as peak-to-peak noise and DC linearity.

Tools & Simulations

Tools & Simulations 2

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

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