Solutions Search - LTC2378-20 - 20-Bit, 1Msps, Low Power SAR ADC with 0.5ppm INL
DC2135A - LTC2378-20 and LT1468 Demo | Converts ±10V Single-Ended Signal with 2ppm Linearity (req. DC590 or DC890)
Apr 17th 2014
Demonstration circuit 2135A shows a simple DC accurate ADC driver circuit that converts a ±10V single-ended input signal into a fully differential signal capable of driving the LTC2378-20 with a combined linearity error of only 2ppm. The LTC2378-20 is a low power, low noise 20-bit SAR ADC with a serial output that operates ...
LTspice: SAR ADC Driver Interface
Apr 3rd 2014
High-performance SAR ADCs can offer amazing dynamic range and linearity at faster and faster sample rates. But how do you design the amplifier and interface at the analog inputs? LTspice IV can help. This video shows how to use LTspice to simulate the analog input interface of high-performance SAR ADCs. We will look ...
Digital Gain Compression (DGC) for SAR ADCs
Mar 11th 2014
The LTC2378-20 offers a digital gain compression (DGC) feature which defines the full-scale input swing to be between 10% and 90% of the ±VREF analog input range. This feature allows the SAR ADC driver to be powered off of a single positive supply since each input swings between 0.5V and 4.5V as shown in the figure below.
Needing ...
Short Ground Leads Make Better Scope Photos
Nov 6th 2013
I often ask customers to send me oscilloscope photos showing the ADC interface timing of their circuits. Occasionally, what I get back is a waveform with large amplitude ringing or even something that resembles a sine wave for what should be a relatively clean square wave. When asked how the scope probe was grounded, they will ...
20-Bit 1Msps 0.5ppm INL SAR ADC
Oct 1st 2013
The LTC®2378-20 is a versatile general purpose ADC which provides state-of-the-art performance at any sampling rate up to 1MHz. In this video, we will show that it is ADC non-linearity, as opposed to noise, that ultimately limits the measurement accuracy that can be achieved with an ADC. The combination of speed, versatility ...
Can You Use the Voltage Reference to Power Your ADC Driver?
Jul 11th 2013
Linear Technology’s family of 16-, 18-, and 20-Bit SAR ADCs (LTC2378-20 family) operates with an external reference voltage of up to 5V. The largest input voltage that you are then supposed to put on each ADC input pin is equal to that 5V reference voltage. It seems logical to use an opamp on a 5V supply with rail-to-rail ...
Breakthrough 0.5ppm INL, 1Msps, No Latency SAR ADC Achieves True 20-Bit Precision
May 28th 2013
MILPITAS, CA – May 28, 2013 – Linear Technology Corporation
introduces the LTC2378-20 , a 20-bit 1Msps no latency successive
approximation register (SAR) analog-to-digital converter (ADC) with
exceptionally low 0.5ppm (typ) and 2ppm (max) Integral
Non-Linearity (INL) error. INL is a key specification in precision
applications, ...
DC1925A-A - LTC2378-20 Demo Board | 20-Bit, 1Msps, SAR ADC with 104dB SNR. Req DC2026
Apr 10th 2013
The LTC®2378-20, 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 following text 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 ...
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