Analog Devices Inc. LTC2236IUH#PBF

Overview

LTC2236IUH#PBF from Analog Devices (formerly Linear Technology) is a 10-bit, 25Msps low-power 3V analog-to-digital converter optimized for high-dynamic-range signal digitization in imaging and communications systems. It delivers 61.8dB SNR, 85dB SFDR at Nyquist, ±0.1LSB typical INL, and operates from a single 2.7V–3.4V supply with only 75mW power consumption. Its 575MHz full-power bandwidth and clock duty cycle stabilizer support demanding ultrasound and spectral analysis applications.

For engineers reviewing the LTC2236IUH#PBF datasheet, LTC2236IUH#PBF pinout, LTC2236IUH#PBF application, or LTC2236IUH#PBF equivalent, key selection criteria include its guaranteed no-missing-codes performance, flexible ±0.5V to ±1V input range, differential or single-ended analog interface, and compatibility with 0.5V–3.6V logic-level outputs via separate OVDD rail.

Technical Context

The LTC2236IUH#PBF implements a six-stage CMOS pipelined ADC architecture with internal correction logic, achieving 5-cycle pipeline latency and stable operation across –40°C to +85°C. Its sample-and-hold circuit features 4pF sampling capacitors and supports both differential and single-ended input drive, with VCM pin providing a precise 1.5V common-mode bias.

It integrates a clock duty cycle stabilizer, shutdown and nap modes, and configurable output format (offset binary or 2's complement) via the MODE pin. The SENSE pin enables programmable input range selection using internal or external references, while OF (overflow/underflow) provides real-time data validity monitoring.

Key Specifications

Pinout & Package

Package: 32-pin (5mm × 5mm) QFN with exposed thermal pad (Pin 33 = GND), requiring soldering to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit, medium-speed ADC applications.

Compared with ADS5270IPFP and AD9218BSTZ-25, the LTC2236IUH#PBF offers superior power efficiency (75mW vs ≥125mW), integrated clock conditioning, and simpler single-supply biasing - making it optimal for thermally constrained, battery-aware, or cost-sensitive high-dynamic-range digitizers.

Availability

LTC2236IUH#PBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, portable test equipment, spectral analyzers, and wired broadband communication receivers requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grading.

Supply support for LTC2236IUH#PBF 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 LTC2236IUH#PBF belongs to ADI's high-speed precision ADC product line, engineered specifically for applications demanding low power, excellent AC performance, and robust operation in harsh environmental conditions.

FAQ

What is the operating temperature range for the LTC2236IUH#PBF?

The LTC2236IUH#PBF is rated for industrial operation from –40°C to +85°C, as indicated by the "I" grade suffix in the part number. This specification is guaranteed across all key AC and DC parameters including SNR, SFDR, INL, and DNL, making it suitable for deployment in uncontrolled ambient environments such as field-deployed medical devices and industrial controllers.

Does the LTC2236IUH#PBF require an external reference voltage?

No, the LTC2236IUH#PBF includes an internal 1.5V reference buffer (VCM pin) and supports fully self-contained operation using its internal reference. When SENSE is tied to VCM, it configures a ±0.5V input range; tying SENSE to VDD selects ±1V. An external reference between 0.5V and 1V applied to SENSE is also supported, but not required.

How does the MODE pin affect the output format of the LTC2236IUH#PBF?

The MODE pin on the LTC2236IUH#PBF selects both output coding and clock duty cycle stabilizer state: grounding MODE yields offset binary output with stabilizer disabled; applying 1/3 VDD enables offset binary with stabilizer active; 2/3 VDD selects 2's complement with stabilizer active; and VDD selects 2's complement with stabilizer disabled - enabling flexible interface alignment with downstream logic.

What is the purpose of the OF (overflow/underflow) pin on the LTC2236IUH#PBF?

The OF pin on the LTC2236IUH#PBF is an active-high flag that asserts whenever the analog input exceeds the selected full-scale range (either positive overflow or negative underflow). This real-time status signal enables immediate corrective action in closed-loop systems - such as AGC adjustment or alarm triggering - without requiring post-processing analysis of the digital output stream.

Can the LTC2236IUH#PBF drive standard CMOS logic directly?

Yes, the LTC2236IUH#PBF can drive standard CMOS logic directly via its parallel D0–D9 outputs, which are powered by a separate OVDD rail configurable from 0.5V to 3.6V. When OVDD is set to 3.3V or 3.0V, the outputs meet standard LVTTL or LVCMOS voltage thresholds; at 1.8V, they interface cleanly with modern FPGA and ASIC I/O banks - eliminating need for external level translators.