Analog Devices Inc. LTC6360HDD#TRPBF

Overview

LTC6360HDD#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-resolution data acquisition systems.

For engineers reviewing the LTC6360HDD#TRPBF datasheet, LTC6360HDD#TRPBF pinout, LTC6360HDD#TRPBF application, or LTC6360HDD#TRPBF equivalent, key selection criteria include its integrated charge pump enabling true 0V output swing, guaranteed operation from –40°C to 125°C, and compatibility with 16-/18-bit SAR ADCs requiring low distortion and high SNR in compact industrial and test equipment designs.

Technical Context

The LTC6360HDD#TRPBF employs a dual-input-stage architecture (parallel NPN/PNP differential pairs) with precision two-point offset trimming to maintain stable DC performance across 0V–4.25V input common-mode range. Its on-chip low-noise charge pump generates a regulated –0.6V bias at CPO, enabling the output stage to swing to true zero while preserving linearity and minimizing crossover distortion.

This architecture supports 110dB SNR over 3MHz bandwidth and achieves full-power bandwidth of 2.7MHz under 4V_P-P output conditions - limited not by slew rate alone but by the charge pump's continuous sinking capability (4.5mA max), making it distinct from conventional rail-to-rail amplifiers.

Key Specifications

Pinout & Package

Package: 8-lead (3mm × 3mm) plastic DFN with exposed thermal pad (Pin 9), rated θ_JA = 43°C/W. Exposed pad must be connected to PCB ground for thermal and electrical integrity.

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 LTC6360HDD#TRPBF uniquely combines true zero output, –40°C to 125°C qualification, and 2.3nV/√Hz noise - making it the only drop-in solution for high-accuracy, single-supply SAR ADC drivers in demanding industrial environments.

Availability

LTC6360HDD#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, automotive battery management, and portable test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6360HDD#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 LTC6360HDD#TRPBF belongs to ADI's precision amplifier product line, designed specifically to solve the challenge of driving high-resolution SAR ADCs from single supplies while maintaining true zero output, low distortion, and wide temperature operation.

FAQ

What is the guaranteed operating temperature range for the LTC6360HDD#TRPBF?

The LTC6360HDD#TRPBF is fully specified and guaranteed over –40°C to +125°C ambient temperature. This includes all key parameters such as input offset voltage (≤900µV max), harmonic distortion (HD2/HD3), and supply current - making it suitable for under-hood automotive and industrial control applications where thermal stability is critical. The "H" grade designation explicitly confirms this extended range.

How does the LTC6360HDD#TRPBF achieve true zero output on a single 5V supply?

The LTC6360HDD#TRPBF integrates a low-noise on-chip charge pump that generates a regulated –0.6V bias at the CPO pin. This voltage is routed internally via CPI to bias the output stage, allowing the OUT pin to swing down to –0.48V - effectively enabling true zero crossing and linear operation from 0V to 4.91V without external negative rails or level shifters.

Can the LTC6360HDD#TRPBF drive capacitive loads directly, and what is the maximum recommended capacitance?

The LTC6360HDD#TRPBF is decompensated for stability with a 10Ω series resistor and 330pF capacitor (RC filter) to ground - a standard configuration for SAR ADC input filtering. Driving larger capacitive loads directly (e.g., >1nF) without series resistance risks instability. For >330pF, retain the 10Ω isolation resistor and increase capacitance; do not omit RFILT.

What is the role of the SHDN pin on the LTC6360HDD#TRPBF, and how much current does it draw in shutdown?

The SHDN pin (Pin 7) disables the LTC6360HDD#TRPBF when pulled below 0.8V, reducing total supply current to ≤350µA. In shutdown, ICC ≤200µA and IDD ≤150µA combine for ITOT(SHDN) ≤350µA - ideal for power-gated signal chains in battery-operated instruments. The pin draws only ≤100nA when enabled (V_SHDN = 5V).

Is the LTC6360HDD#TRPBF pin-compatible with other variants in the LTC6360 family, such as the MSOP package versions?

No - the LTC6360HDD#TRPBF uses an 8-lead 3mm × 3mm DFN package with exposed pad (Pin 9 = GND), while MSOP variants (e.g., LTC6360HMS8E#TRPBF) use an 8-lead MSOP with different pinout and thermal pad configuration. Although both share identical electrical specifications and functionality, PCB layout and thermal design are not interchangeable due to mechanical and thermal pad differences.