Analog Devices Inc. ADP7102ACPZ-9.0-R7

Overview

ADP7102ACPZ-9.0-R7 from Analog Devices is a 20 V input, 300 mA, low-noise CMOS LDO regulator with fixed 9.0 V output, 15 μV_rms output noise, 60 dB PSRR at 10 kHz, and 200 mV dropout at full load-designed for powering precision analog circuits such as ADCs, DACs, and clocking subsystems in instrumentation and medical equipment.

For engineers reviewing the ADP7102ACPZ-9.0-R7 datasheet, ADP7102ACPZ-9.0-R7 pinout, ADP7102ACPZ-9.0-R7 application, or ADP7102ACPZ-9.0-R7 equivalent, key selection criteria include its 9.0 V fixed output accuracy (±0.8% initial, −2%/+1% over line/load/temp), reverse current protection, power-good indicator, and user-programmable UVLO-critical for multi-rail sequencing and noise-sensitive supply domains.

Technical Context

The ADP7102ACPZ-9.0-R7 employs an advanced proprietary CMOS architecture optimized for high PSRR and ultra-low noise across 10 Hz–100 kHz, maintaining stable regulation with only a 1 μF ceramic output capacitor. Its internal error amplifier uses SENSE/ADJ feedback to minimize IR drop effects in fixed-output mode.

It integrates foldback current limiting, thermal shutdown at 150°C with 15°C hysteresis, and a digital open-drain power-good (PG) output that asserts low during undervoltage, shutdown, or fault conditions-enabling system-level power monitoring and sequencing control.

Key Specifications

Pinout & Package

ADP7102ACPZ-9.0-R7 is packaged in an 8-lead, 3 mm × 3 mm LFCSP (Lead Frame Chip Scale Package) with exposed pad (EPAD) electrically connected to GND and thermally coupled to PCB ground plane for enhanced thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with LT3045EDD-9.0#PBF and TPL7407LPWPR, ADP7102ACPZ-9.0-R7 uniquely balances 300 mA output, 15 μV_rms noise, integrated PG/UVLO, and 1 μF stability-making it optimal for mid-complexity analog systems demanding both performance and system-level control.

Availability

ADP7102ACPZ-9.0-R7 is available at Aetrix Electronics and suitable for high-precision data acquisition, medical imaging signal chains, industrial process control, and test & measurement equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for ADP7102ACPZ-9.0-R7 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADP7102 product line delivers high-input-voltage, low-noise LDOs targeting noise-sensitive analog and mixed-signal applications-including precision instrumentation, medical devices, and communications infrastructure-where PSRR, output accuracy, and power sequencing matter.

FAQ

What is the output voltage tolerance of the ADP7102ACPZ-9.0-R7 over temperature and load?

The ADP7102ACPZ-9.0-R7 guarantees output voltage accuracy of −2% to +1% across the full operating junction temperature range (−40°C to +125°C) and load current range (1 mA to 300 mA), with initial accuracy tighter at ±0.8% at 10 mA. This ensures reliable 9.0 V regulation for precision analog circuits even under worst-case thermal and loading conditions. The ADP7102ACPZ-9.0-R7 maintains this specification without external trimming.

Does the ADP7102ACPZ-9.0-R7 require an external capacitor on the SENSE/ADJ pin?

No-the ADP7102ACPZ-9.0-R7 is a fixed-output variant, so the SENSE/ADJ pin functions solely as a high-impedance sense node and must be connected directly to the load (not to VOUT locally) to compensate for PCB trace resistance. No external resistor divider or capacitor is required. Connecting SENSE/ADJ to the load point-not the VOUT pin-ensures optimal line/load regulation and minimizes IR-drop-induced errors in the ADP7102ACPZ-9.0-R7.

Can the ADP7102ACPZ-9.0-R7 be used with a 12 V input to deliver stable 9.0 V at 300 mA?

Yes-the ADP7102ACPZ-9.0-R7 supports input voltages up to 20 V and has a typical dropout voltage of 200 mV at 300 mA. With a 12 V input, the 2.8 V headroom is more than sufficient to maintain regulation. Thermal performance remains within spec on a standard 4-layer PCB with proper EPAD grounding, as θJA = 40.1°C/W ensures junction temperature stays below 125°C at ambient ≤85°C. The ADP7102ACPZ-9.0-R7 is validated for this use case.

What is the purpose of the PG (power-good) pin on the ADP7102ACPZ-9.0-R7?

The PG pin on the ADP7102ACPZ-9.0-R7 is an open-drain output that goes low when VOUT falls below 90% of nominal (i.e., <8.1 V), or during shutdown, current limit, or thermal shutdown. It requires an external pull-up resistor (to VIN or VOUT) and enables system controllers to monitor LDO health and sequence downstream logic. Unlike simple reset signals, PG responds dynamically to output faults-making it essential for safety-critical ADP7102ACPZ-9.0-R7 deployments.

Is the ADP7102ACPZ-9.0-R7 compatible with ceramic output capacitors smaller than 10 μF?

Yes-the ADP7102ACPZ-9.0-R7 is explicitly characterized and stable with a minimum 1 μF X7R/X5R ceramic output capacitor across −40°C to +125°C, per Table 2 in the datasheet. Using smaller ceramics eliminates ESR-related instability risks common in older LDOs and reduces board area and cost. The ADP7102ACPZ-9.0-R7's internal compensation is optimized for this low-capacitance operation, and no additional series resistance is needed.