Analog Devices Inc. LTC6360HMS8E#TRPBF

Overview

LTC6360HMS8E#TRPBF from Analog Devices (formerly Linear Technology) is a precision, low-noise, single-ended SAR ADC driver amplifier with true zero-output capability on a single 5V supply. It delivers 2.3nV/√Hz input voltage noise density, 150ns settling time to 16-bit accuracy for a 4V step, and –103dBc HD2 / –109dBc HD3 distortion at 40kHz with 4V_P-P output - enabling high-fidelity signal conditioning in high-speed data acquisition systems.

For engineers reviewing the LTC6360HMS8E#TRPBF datasheet, LTC6360HMS8E#TRPBF pinout, LTC6360HMS8E#TRPBF application, or LTC6360HMS8E#TRPBF equivalent, key selection considerations include its integrated charge pump for true-zero output swing, 110dB SNR over 3MHz bandwidth, –40°C to 125°C operating range, and MSOP-8 package with exposed pad for thermal management.

Technical Context

The LTC6360HMS8E#TRPBF employs a dual-input-stage architecture (parallel NPN/PNP differential pairs) with precision two-point offset trimming, enabling rail-to-rail input common-mode range (0V to 4.25V) and stable 250µV max input offset voltage across temperature and common-mode voltage. Its on-chip low-noise charge pump generates –0.6V at CPO to bias the output stage, allowing true zero-volt output swing without external negative supplies.

This architecture supports fast settling (150ns to ±1LSB at 16-bit), high linearity (40µV DC INL), and robust harmonic performance (HD2/HD3 ≤ –103/–109dBc at 40kHz, 4V_P-P). The device is internally compensated for gain ≥5 but requires external RC filtering (e.g., 10Ω + 330pF) for unity-gain stability when driving capacitive ADC inputs.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic MSOP with Exposed Pad (MS8E), 3mm × 3mm footprint, –40°C to 125°C grade (H-grade).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SAR ADC driver applications.

Compared with ADA4897-1ARMZ-R7 and THS4561IRGET, the LTC6360HMS8E#TRPBF uniquely integrates a low-noise charge pump to enable true zero output on 5V, making it the only option among the three qualified for high-accuracy, DC-coupled, single-supply SAR ADC interfaces across –40°C to 125°C.

Availability

LTC6360HMS8E#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, automotive battery cell monitoring, and medical ECG signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for LTC6360HMS8E#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 LTC6360HMS8E#TRPBF belongs to ADI's precision amplifier product line, designed specifically to solve the challenge of driving high-resolution SAR ADCs with true zero output swing on single supplies - eliminating external charge pumps and level-shifters in data acquisition front-ends.

FAQ

What is the maximum output voltage swing of the LTC6360HMS8E#TRPBF on a 5V supply?

The LTC6360HMS8E#TRPBF delivers a guaranteed output voltage swing of –0.48V to 4.91V (at 1mA load) when powered from a 5V supply. This true zero output capability is enabled by its integrated low-noise charge pump, which generates a –0.6V bias at the CPO pin to extend the negative output rail below ground - a key differentiator for driving 0–4.096V full-scale SAR ADCs without external level-shifting circuitry.

How does the LTC6360HMS8E#TRPBF achieve 150ns settling time to 16-bit accuracy?

The LTC6360HMS8E#TRPBF achieves 150ns settling time to ±1LSB (0.0015%) for a 4V step through a combination of high slew rate (135V/µs rising, 95V/µs falling), optimized internal compensation, and a decompensated architecture that prioritizes gain-bandwidth product (1GHz) over unconditional unity-gain stability. Its dual-input-stage design maintains consistent transconductance during common-mode transitions, minimizing settling anomalies that degrade precision.

Can the LTC6360HMS8E#TRPBF be used in unity-gain configuration?

Yes, the LTC6360HMS8E#TRPBF can be used in unity-gain configuration, but requires an external RC network (e.g., 10Ω in series with 330pF to ground) at the output to ensure stability. The device is internally compensated for gain ≥5; the RC network introduces a pole-zero pair that reduces loop gain above 10MHz, preventing oscillation while preserving the 150ns settling performance needed for SAR ADC driving.

What is the role of the CPO and CPI pins on the LTC6360HMS8E#TRPBF?

The CPO (Charge Pump Output) pin provides a regulated –0.6V bias voltage generated by the on-chip charge pump. The CPI (Charge Pump Input) pin connects this bias to the amplifier's output stage. Together, they enable the LTC6360HMS8E#TRPBF's true zero output swing on a single 5V supply. A 0.1µF capacitor from CPI to GND is required to suppress 10MHz charge pump ripple and maintain <1µV_RMS output noise contribution.

Is the LTC6360HMS8E#TRPBF pin-compatible with other MSOP-8 ADC drivers?

No, the LTC6360HMS8E#TRPBF has a unique pinout optimized for its charge pump architecture (CPO/CPI pins at Pins 5/6, SHDN at Pin 7), and is not pin-compatible with generic MSOP-8 op-amps like the ADA4897-1 or THS4561. Direct replacement would require PCB layout revision to accommodate the dedicated charge pump interface and shutdown functionality.