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LTC2141CUP-12:12-bit, 40Msps, low-power, dual-channel analog-to-digital converter

Main characteristics

Two-channel simultaneous sampling ADC

70.8dB SNR

89dB SFDR

Low power: 92mW / 65mW / 48mW (total value)

46mW / 33mW / 24mW (per channel)

Single 1.8V power supply

CMOS, DDR CMOS, or DDR LVDS output

Optional input range: 1VP-P to 2VP-P

750MHz full-power bandwidth sampling and holding (S/H)

Optional random function generator for data output

Optional clock duty cycle stabilizer

Sleep and nap patterns

Serial SPI port for configuration

Pin (9mm x 9mm) QFN package

Description

The LTC2141CUP-12 is A dual-channel simultaneous sampling 12-bit A/D converter, specifically designed for digital processing of high-frequency and wide dynamic range signals. The LTC2141CUP-12 device is highly suitable for demanding communication applications. Its AC performance includes 70.8dB SNR and 89dB parasitic dynamic range (SFDR). The ultra-low jitter of 0.08psRMS achieves undersampling at the IF frequency and excellent noise performance.

The DC specification includes ±0.3LSB INL (typical value), ±0.1LSB DNL (typical value) and no missed codes throughout the entire temperature range. The LTC2141CUP-12 converts noise to 0.3LSBRMS.

The digital output of LTC2141CUP-12 can be full-rate CMOS, double data rate CMOS or double data rate LVDS. A separate output power supply provides a CMOS output swing ranging from 1.2V to 1.8V.

The LTC2141CUP-12 can perform differential or single-ended driving of ENC+ and ENC- inputs using a sine wave, PECL, LVDS, TTL or CMOS input. An optional clock duty cycle stabilizer achieves high performance under full-speed and multiple clock duty cycle conditions.

The LTC2141CUP-12 has the following key parameters:

Digit number: 12

Sampling rate (per second) : 40M

Input number: 2

Input type: Differential

Data interface: LVDS - Parallel, Parallel

Configuration: S/H-ADC

Ratio -S /H:ADC: 1:1

Number of A/D converters: 2

Architecture: Pipeline

Reference types: External, Internal

Voltage - Power supply, simulation: 1.7V to 1.9V

Voltage - Power supply, digital: 1.7V to 1.9V

Feature: Synchronous sampling

Operating temperature: 0°C to 70°C

Package/Shell: 64-WFQFN

Application scenario ‌

The LTC2141CUP-12 is highly suitable for demanding communication applications, such as wireless infrastructure, test and measurement equipment, and high-speed data acquisition systems, etc. Its high performance and low power consumption make it excel in these applications ‌.

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