Analog Devices Inc. AD7193BCPZ-RL

Overview

AD7193BCPZ-RL from Analog Devices is a 24-bit sigma-delta ADC with integrated PGA, designed for high-precision analog front-end acquisition in industrial measurement systems. It delivers 11 nV RMS noise at 4.7 Hz (gain = 128), supports up to 4.8 kHz output data rate, and features four differential or eight pseudo-differential input channels - enabling direct interface with low-level transducer signals such as strain gages and RTDs.

For engineers reviewing the AD7193BCPZ-RL datasheet, AD7193BCPZ-RL pinout, AD7193BCPZ-RL application, or AD7193BCPZ-RL equivalent, key selection criteria include its 22 noise-free bits (gain = 1), simultaneous 50/60 Hz rejection, ±5 nV/°C offset drift, 4 general-purpose digital outputs, and dual-supply operation (AVDD: 3–5.25 V, DVDD: 2.7–5.25 V).

Technical Context

The AD7193BCPZ-RL implements a fully integrated Σ-Δ modulator with on-chip programmable gain amplifier (1× to 128×), configurable digital filter (Sinc3/Sinc4, fast settling, zero-latency), and automatic channel sequencer for up to eight inputs. Its internal 4.92 MHz clock or external crystal/clock input enables precise timing control across varying output data rates.

It supports both buffered and unbuffered analog input modes, dual reference inputs (REFIN1 and REFIN2), bridge power-down switching (BPDSW), and on-chip temperature sensor (±2°C accuracy post-calibration). The device uses SPI-compatible 3-wire serial interface with Schmitt-triggered SCLK for robust noise immunity.

Key Specifications

Pinout & Package

AD7193BCPZ-RL is housed in a 32-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad, optimized for low thermal resistance (θJC = 32.7°C/W) and compact PCB layout in space-constrained instrumentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision sigma-delta ADC applications.

Compared with AD7193BCPZ-RL, AD7173-8BCPZ offers higher resolution but demands external gain stages and lacks integrated bridge control, while ADS1256IPWR provides faster sampling but sacrifices noise performance, drift specs, and built-in filtering - making AD7193BCPZ-RL optimal for ruggedized, self-contained industrial measurement nodes.

Availability

AD7193BCPZ-RL is available at Aetrix Electronics and suitable for PLC/DCS analog input modules, weigh scales, medical instrumentation, and chromatography systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for AD7193BCPZ-RL 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, with design centers worldwide and ISO 9001-certified manufacturing.

The AD7193BCPZ-RL belongs to Analog Devices' precision sigma-delta ADC product line, engineered specifically for high-accuracy, low-drift industrial and scientific measurement where noise, drift, and line-frequency rejection are critical system constraints.

FAQ

What is the maximum output data rate supported by the AD7193BCPZ-RL?

The AD7193BCPZ-RL supports an output data rate range of 4.7 Hz to 4.8 kHz. At the upper limit of 4.8 kHz, the device operates with reduced resolution (15.5 noise-free bits at gain = 128) and disables chop mode to maintain throughput. This makes AD7193BCPZ-RL suitable for both high-resolution static measurements and moderate-speed dynamic acquisition in data loggers and DAS systems.

Does the AD7193BCPZ-RL require an external reference voltage?

No - the AD7193BCPZ-RL can operate with either an internal reference derived from AVDD or two independent external references (REFIN1 and REFIN2). When using AVDD as reference, the nominal voltage must be stable and low-noise; for highest accuracy, a dedicated 2.5 V or 5 V reference (e.g., ADR4525) applied to REFIN1 is recommended. The AD7193BCPZ-RL includes reference detect circuitry that monitors REFINx levels and reports faults via status register.

How does the AD7193BCPZ-RL handle 50 Hz and 60 Hz interference simultaneously?

The AD7193BCPZ-RL achieves simultaneous 50 Hz and 60 Hz rejection using its programmable digital filter. When the REJ60 bit in the mode register is set, the sinc filter places notches at both frequencies - regardless of output data rate - eliminating mains interference without external hardware. This feature is validated across all filter modes (Sinc3, Sinc4, fast settling) and is especially effective at 10 Hz, 50 Hz, and 60 Hz output rates, as confirmed in Table 1 of the Rev. E datasheet.

What package type is used for the AD7193BCPZ-RL?

The AD7193BCPZ-RL is supplied in a 32-lead LFCSP (CP-32-12) package with exposed thermal pad. This RoHS-compliant, lead-frame chip-scale package measures 5 mm × 5 mm × 0.85 mm and provides superior thermal performance (θJC = 32.7°C/W) compared to the 28-lead TSSOP option. The LFCSP variant is specified for operation from −40°C to +105°C and supports reflow soldering per JEDEC J-STD-020.

Can the AD7193BCPZ-RL interface directly with strain-gage bridges?

Yes - the AD7193BCPZ-RL is explicitly designed for direct bridge interface. Its integrated PGA (gain 1–128), low input bias current (<3 nA), bridge power-down switch (BPDSW), and programmable excitation control allow seamless connection to quarter-, half-, or full-bridge configurations. Combined with 11 nV RMS noise at 4.7 Hz and ±5 nV/°C offset drift, the AD7193BCPZ-RL delivers stable, high-resolution digitization essential for weigh scales and pressure transducers.