Analog Devices Inc. LTC1417CGN#TRPBF

Overview

LTC1417CGN#TRPBF from Analog Devices (formerly Linear Technology) is a low-power, 14-bit, 400ksps successive-approximation analog-to-digital converter with serial I/O, differential high-impedance analog inputs, internal 2.5V reference, and dual shutdown modes. It operates from single 5V or ±5V supplies, delivers ±1.25LSB INL and ±1LSB DNL over temperature, and achieves 81dB S/(N+D) and –95dB THD at 200kHz Nyquist input-enabling high-fidelity data acquisition in isolated industrial sensors and telecom front-ends.

For engineers reviewing the LTC1417CGN#TRPBF datasheet, LTC1417CGN#TRPBF pinout, LTC1417CGN#TRPBF application, or LTC1417CGN#TRPBF equivalent, key selection considerations include its 2.25µs max conversion time, 16-pin narrow SSOP package, unipolar/bipolar input range flexibility (0–4.096V or ±2.048V), and support for external clocking or internal trimmed oscillator-critical for synchronized multi-channel sampling systems.

Technical Context

The LTC1417CGN#TRPBF implements a capacitive DAC-based successive approximation register (SAR) architecture with integrated sample-and-hold, precision internal reference, and digital control logic optimized for microprocessor and DSP interfacing. Its differential input stage provides 65dB common-mode rejection, while the 14-bit serial output uses edge-triggered SCLK with BUSY and RD handshaking to ensure reliable timing across FIFO and DMA transfers.

It supports two user-selectable power-down states: Nap mode (750µA supply current, 500ns wake-up) and Sleep mode (0.1µA, 1.5nA VSS leakage), enabling dynamic power management in battery-backed instrumentation. The internal clock is factory-trimmed to guarantee ≤2.25µs conversion time, and EXTCLKIN allows synchronization to external timing sources up to 9MHz.

Key Specifications

Pinout & Package

Package: 16-lead narrow plastic SSOP (0.154" body width, SO-8 footprint compatible).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 14-bit SAR ADC applications.

Compared with LTC1417CGN#TRPBF, ADS8326IPW trades internal reference and dual-supply flexibility for higher resolution and speed, while MAX1166BCAP+ sacrifices sampling rate and bipolar capability for smaller footprint and lower supply voltage range-making LTC1417CGN#TRPBF optimal for 5V/±5V systems requiring balanced speed, precision, and integration.

Availability

LTC1417CGN#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, isolated data acquisition systems, and telecom baseband processing requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for LTC1417CGN#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LTC1417CGN#TRPBF belongs to Linear's legacy precision data acquisition family, designed specifically for high-speed, low-power, high-accuracy digitization in industrial, instrumentation, and communications equipment where DC accuracy and AC performance must coexist.

FAQ

What is the maximum sampling rate supported by the LTC1417CGN#TRPBF?

The LTC1417CGN#TRPBF supports a maximum sampling rate of 400ksps, with guaranteed 2.25µs conversion time and 250ns minimum inter-conversion delay. This rate is achievable under both unipolar (5V) and bipolar (±5V) supply conditions, and the device maintains specified AC performance-including 81dB S/(N+D)-up to the Nyquist frequency of 200kHz.

Does the LTC1417CGN#TRPBF require an external reference voltage?

No, the LTC1417CGN#TRPBF includes an internal 2.500V reference with ±10ppm/°C tempco (0°C–70°C) and a separate 4.096V REF COMP output. It can operate fully autonomously using these references. However, it also supports external reference inputs for applications demanding tighter initial accuracy or custom full-scale ranges.

How does power management work on the LTC1417CGN#TRPBF?

The LTC1417CGN#TRPBF features two distinct low-power states controlled jointly by SHDN and RD pins: Nap mode (SHDN = low, RD = low) draws 750µA and wakes in 500ns; Sleep mode (SHDN = low, RD = high) draws just 0.1µA. Both modes retain register state and reference bias, enabling rapid resumption of conversion without recalibration.

What are the analog input voltage ranges supported by the LTC1417CGN#TRPBF?

The LTC1417CGN#TRPBF supports two configurable input ranges: 0V to 4.096V in unipolar mode (with 5V supply), and ±2.048V in bipolar mode (with ±5V supplies). Input common-mode range spans (VSS – 0.3V) to (VDD + 0.3V), and the differential input structure provides 65dB common-mode rejection across both ranges.

Can the LTC1417CGN#TRPBF interface directly with a microcontroller GPIO without level shifting?

Yes-the LTC1417CGN#TRPBF's digital I/O (CONVST, RD, SHDN, BUSY, DOUT, CLKOUT, SCLK) are fully 5V-tolerant and CMOS-compatible. With VDD = 5V, VIH = 2.4V min and VOL = 0.1V max at 160µA sink, enabling direct connection to standard 5V microcontrollers without level-shifting circuitry.