Analog Devices Inc. LTC2140IUP-12#TRPBF

Overview

LTC2140IUP-12#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 25Msps dual-channel simultaneous-sampling analog-to-digital converter optimized for high-dynamic-range signal digitization in demanding RF and instrumentation systems. It delivers 70.5dB SNR, 89dB SFDR, 750MHz full-power bandwidth, ±0.3LSB INL (typ), and operates from a single 1.8V supply with 48mW total power consumption.

For engineers reviewing the LTC2140IUP-12#TRPBF datasheet, LTC2140IUP-12#TRPBF pinout, LTC2140IUP-12#TRPBF application, or LTC2140IUP-12#TRPBF equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for multi-channel data acquisition, portable medical imaging, and nondestructive testing designs.

Technical Context

The LTC2140IUP-12#TRPBF implements two independent 12-bit ADC cores with simultaneous sampling architecture and integrated sample-and-hold circuits featuring 0.08psRMS jitter. Its analog front-end supports differential input ranges from 1VP-P to 2VP-P with 750MHz full-power bandwidth and 80dB common-mode rejection.

Digital outputs are configurable as full-rate CMOS, DDR CMOS, or DDR LVDS, with separate OVDD supply enabling output swing control from 1.2V to 1.8V (CMOS) or 100Ω on-chip termination (LVDS). Configuration is performed via a serial SPI port supporting shutdown, nap modes, clock duty cycle stabilization, and data randomization.

Key Specifications

Pinout & Package

64-pin (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel 12-bit ADC applications.

Compared with AD9233BCPZ-25 and LTC2245IUP-12#TRPBF, the LTC2140IUP-12#TRPBF uniquely integrates two matched, simultaneously sampled ADCs in one package-enabling coherent dual-channel acquisition without inter-device skew, gain/offset mismatch, or layout complexity.

Availability

LTC2140IUP-12#TRPBF is available at Aetrix Electronics and suitable for portable medical imaging, nondestructive testing, and multi-channel data acquisition requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for LTC2140IUP-12#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2140 series belongs to ADI's high-speed precision ADC product line, designed specifically for applications demanding simultaneous sampling, ultra-low jitter, and wide dynamic range in compact, low-power form factors.

FAQ

What is the maximum input frequency supported by the LTC2140IUP-12#TRPBF?

The LTC2140IUP-12#TRPBF features a 750MHz full-power bandwidth, enabling accurate digitization of analog inputs up to 750MHz without significant amplitude attenuation. This supports undersampling architectures for IF frequencies up to 375MHz while maintaining 70.5dB SNR performance at 70MHz input - critical for software-defined radio and test equipment applications.

Does the LTC2140IUP-12#TRPBF support differential or single-ended analog inputs?

The LTC2140IUP-12#TRPBF supports true differential analog inputs on both channels (AIN1±, AIN2±) with 80dB common-mode rejection. Single-ended operation is not recommended; however, ENC– can be tied to GND to enable single-ended clocking. The analog input stage is optimized for differential drive - using VCM1/VCM2 outputs to bias common-mode voltage ensures optimal linearity and SNR.

How does the power consumption of the LTC2140IUP-12#TRPBF compare across output modes?

In CMOS output mode at 25Msps, the LTC2140IUP-12#TRPBF consumes 48mW total (24mW per channel). In DDR LVDS mode, power increases to 104–185mW depending on current mode (1.75mA vs 3.5mA), due to higher driver current requirements. The choice impacts FPGA interface design: CMOS reduces system power but requires careful timing closure; LVDS improves noise immunity and timing margin at higher speeds.

Can the LTC2140IUP-12#TRPBF be configured for serial or parallel programming?

Yes - the LTC2140IUP-12#TRPBF supports both programming modes via the PAR/SER pin (Pin 11). When grounded, it enables full-featured serial SPI configuration (CS/SCK/SDI/SDO). When tied to VDD, it enters parallel mode where CS, SCK, and SDI become direct logic controls for clock stabilizer, output format, and power-down - simplifying firmware integration in resource-constrained microcontrollers.

What is the operating temperature range for the LTC2140IUP-12#TRPBF?

The LTC2140IUP-12#TRPBF is rated for industrial operation from –40°C to +85°C, as indicated by the "I" grade in its part number. All key specifications - including ±0.3LSB INL, 70.5dB SNR, and 89dB SFDR - are guaranteed across this full temperature range, making it suitable for deployment in outdoor instrumentation, factory-floor sensors, and mobile diagnostic equipment without derating.