Analog Devices Inc. LTC2225CUH#TRPBF

Overview

LTC2225CUH#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 10 Msps low-power pipelined analog-to-digital converter operating from a single 3V supply (2.7V–3.4V), delivering 71.3 dB SNR and 90 dB SFDR at 5 MHz input - optimized for high-fidelity spectral analysis and portable instrumentation signal chains.

For engineers reviewing the LTC2225CUH#TRPBF datasheet, LTC2225CUH#TRPBF pinout, LTC2225CUH#TRPBF application, or LTC2225CUH#TRPBF equivalent, this page provides verified functional identity, validated QFN-32 pin mapping, confirmed DC/AC performance specs across temperature, and two rigorously cross-referenced alternative ADCs for 10 Msps, 12-bit sampling in space-constrained, low-power systems.

Technical Context

The LTC2225CUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with 5-cycle latency, supporting differential or single-ended analog inputs (±0.5V to ±1V range) and featuring an integrated 1.5V VCM output, flexible reference programming via SENSE pin, and internal clock duty cycle stabilization circuitry.

It employs a sample-and-hold with 575 MHz full-power bandwidth, transition noise of 0.25 LSB_RMS, no missing codes over 0°C–70°C, and separate OVDD (0.5V–3.6V) for logic-level compatibility - enabling direct interfacing with FPGA I/O banks or microcontroller parallel interfaces without level-shifting.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit, ~10 Msps ADC applications.

Compared with ADS8325IPFBT and LTC2245CUH#TRPBF, the LTC2225CUH#TRPBF delivers optimal balance of 12-bit linearity, 10 Msps throughput, and ultra-low 60 mW power - making it uniquely suited for portable, battery-constrained wideband digitization where 14-bit resolution is unnecessary and SAR speed is insufficient.

Availability

LTC2225CUH#TRPBF is available at Aetrix Electronics and suitable for wireless communication receivers, portable spectrum analyzers, and medical ultrasound beamforming requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for LTC2225CUH#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 ICs for precision measurement and signal chain applications.

The LTC2225CUH#TRPBF belongs to Linear's high-speed ADC product line, designed specifically for demanding wideband digitization in space- and power-constrained systems where AC performance, low power, and small footprint are co-primary requirements.

FAQ

What is the operating temperature range for the LTC2225CUH#TRPBF?

The LTC2225CUH#TRPBF is rated for 0°C to 70°C ambient operation (Commercial grade). Its DC specifications - including ±0.3 LSB INL and ±0.15 LSB DNL - are guaranteed across this full range, and AC performance metrics such as 71.3 dB SNR and 90 dB SFDR are specified at 25°C with typical behavior maintained across temperature.

Does the LTC2225CUH#TRPBF support differential clock input?

No - the LTC2225CUH#TRPBF accepts only single-ended CMOS/TTL-level clock signals on the CLK pin (Pin 9). For differential clock sources (e.g., LVDS or PECL), an external LVDS-to-CMOS translator such as the FIN1002 must be used prior to driving the CLK input, as specified in Figure 8 of the datasheet.

How is the input range configured on the LTC2225CUH#TRPBF?

The LTC2225CUH#TRPBF input range is set via the SENSE pin (Pin 30): tying SENSE to VCM selects ±0.5V (1V_P-P), tying to VDD selects ±1V (2V_P-P), and applying 0.5V < V_SENSE < 1V yields a programmable ±V_SENSE range. The 2V range maximizes SNR; the 1V range improves SFDR by ~3 dB.

Can the LTC2225CUH#TRPBF drive standard 3.3V CMOS logic directly?

Yes - the LTC2225CUH#TRPBF digital outputs are buffered by an independent OVDD supply (Pin 21), which can be set from 0.5V to 3.6V. When OVDD = 3.3V, VOH exceeds 2.99V and VOL remains below 0.4V at 1.6 mA sink current, meeting standard 3.3V CMOS voltage thresholds without external level shifters.

What is the function of the OF (overflow) pin on the LTC2225CUH#TRPBF?

The OF pin (Pin 28) is an active-high overflow/underflow flag that asserts when the analog input exceeds the selected full-scale range (e.g., >+1.000V or <–1.000V for 2V range). It provides real-time saturation detection for automatic gain control (AGC) loops or data validity checking in FPGA-based post-processing pipelines.