Analog Devices Inc. LTC2436-1CGN#TRPBF

Overview

LTC2436-1CGN#TRPBF from Analog Devices (formerly Linear Technology) is a 2-channel differential-input, micropower, 16-bit No Latency ΔΣ analog-to-digital converter with integrated oscillator and 3-wire SPI/MICROWIRE interface. It delivers 0.12 LSB INL, 800 nV RMS noise independent of VREF, and >87 dB 50/60 Hz notch rejection. Used in precision weight scales and strain-gage transducers where low drift, ratiometric measurement, and channel-ping-pong operation are required.

For engineers reviewing the LTC2436-1CGN#TRPBF datasheet, LTC2436-1CGN#TRPBF pinout, LTC2436-1CGN#TRPBF application, or LTC2436-1CGN#TRPBF equivalent, key selection criteria include its single-cycle digital filter settling, GND-to-VCC input common-mode range, internal oscillator eliminating external timing components, and guaranteed no missing codes across –0.5·VREF to +0.5·VREF full-scale differential input range.

Technical Context

The LTC2436-1CGN#TRPBF employs a third-order delta-sigma modulator with decimating FIR filter, achieving true no-latency conversion-each output corresponds precisely to its associated channel's analog sample without filter settling delay. Its ping-pong channel selection alternates between CH0+/- and CH1+/- automatically, embedding channel ID in the 19-bit serial output stream.

It supports dual clock modes: internal oscillator (FO = GND) for simultaneous 50/60 Hz rejection at 87 dB minimum, or external oscillator (FO driven) for user-defined notch frequency f_EOSC/2560 ±4% with >110 dB rejection. Reference and input common-mode voltages are independently configurable from GND to VCC, enabling remote sensing and flexible ratiometric configurations.

Key Specifications

Pinout & Package

Narrow SSOP-16 package (GN), 5.0 mm × 6.2 mm, 0.635 mm pitch, with five dedicated ground pins (Pins 8, 9, 10, 15, 16) for optimal noise immunity and decoupling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit delta-sigma ADC applications.

Compared with ADS1115IDGSR, LTC2436-1CGN#TRPBF provides hardware-automated 50/60 Hz rejection and channel ping-pong without host overhead; compared with LTC2412CGN#PBF, it offers faster throughput (≈7SPS vs 15SPS) and lower noise density at the cost of 8 fewer bits-making it optimal for 16-bit industrial sensor interfaces demanding robustness over ultimate resolution.

Availability

LTC2436-1CGN#TRPBF is available at Aetrix Electronics and suitable for weight scales, strain-gage transducers, direct temperature measurement, and gas analyzers requiring stable component supply, long-term manufacturability, and guaranteed parametric performance across 0°C to 70°C.

Supply support for LTC2436-1CGN#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 LTC2436-1CGN#TRPBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy sensor digitization in harsh electrical environments-emphasizing noise immunity, ratiometric flexibility, and autonomous operation.

FAQ

What is the maximum achievable output data rate of the LTC2436-1CGN#TRPBF?

The LTC2436-1CGN#TRPBF achieves approximately 7 samples per second (SPS) when using its internal oscillator (FO = GND), with a typical conversion time of 146.7 ms. With an external oscillator at 2000 kHz, the conversion time reduces to ~10.2 ms, enabling up to 98 SPS-though effective throughput remains limited by the 19-bit serial interface and host controller timing.

Does the LTC2436-1CGN#TRPBF require external passive components for its internal oscillator?

No, the LTC2436-1CGN#TRPBF requires no external passive components for oscillator operation. Its integrated oscillator functions autonomously when FO is tied to GND, delivering precise timing for 50/60 Hz rejection without crystals, capacitors, or resistors-reducing BOM count and layout sensitivity.

How does the LTC2436-1CGN#TRPBF handle overrange and underrange conditions?

The LTC2436-1CGN#TRPBF encodes overrange (VIN > +0.5·VREF) and underrange (VIN < –0.5·VREF) conditions using distinct status bits in its 19-bit output frame: Bits 16 and 15 both HIGH indicate overrange; both LOW indicate underrange. The 16-bit data field clamps to +FS+1LSB or –FS–1LSB respectively, preserving monotonicity.

Can the LTC2436-1CGN#TRPBF operate with a 3.3 V supply and 1.25 V reference?

Yes, the LTC2436-1CGN#TRPBF supports VCC from 2.7 V to 5.5 V and accepts differential reference voltages from 0.1 V to VCC. With VCC = 3.3 V and VREF = 1.25 V, the full-scale differential input range becomes ±625 mV, and input/common-mode voltages may be set independently anywhere between GND and 3.3 V-enabling direct interface to low-voltage sensors.

What is the purpose of the five GND pins on the LTC2436-1CGN#TRPBF SSOP-16 package?

The five GND pins (Pins 8, 9, 10, 15, 16) on the LTC2436-1CGN#TRPBF provide low-impedance return paths for analog, digital, and power currents-minimizing ground bounce, improving PSRR, and enhancing CMRR. They must all be connected to a solid ground plane; splitting or omitting any degrades noise performance and violates Absolute Maximum Ratings.