Analog Devices Inc. AD8202YRZ

Overview

AD8202YRZ from Analog Devices is a single-supply difference amplifier designed for high common-mode voltage (CMV) current sensing in automotive powertrain systems. It delivers 20× system gain, ±2 mV initial input offset (RTI), 80 dB minimum CMRR from dc to 10 kHz, and operates from −6 V to +28 V CMV at 5 V supply - enabling accurate shunt-based current measurement in battery-supply lines and diesel injection control circuits.

For engineers reviewing the AD8202YRZ datasheet, AD8202YRZ pinout, AD8202YRZ application, or AD8202YRZ equivalent, this page provides verified technical context, SOIC-8 package details, automotive-grade temperature performance (−40°C to +125°C), low-pass filter capability via external 100 kΩ node, and validated alternative options for transmission control and engine management designs.

Technical Context

The AD8202YRZ implements a two-stage architecture: a ×10 preamplifier with dynamic bridge topology for extended CMV rejection, followed by a ×2 output buffer. Its input network attenuates both differential and common-mode signals while maintaining rail-to-rail operation even when inputs exceed supply rails.

Pin 3 provides access to the preamplifier output through a 100 kΩ series resistor, enabling external low-pass filtering or gain adjustment without affecting bandwidth. The device achieves 30–50 kHz system bandwidth and maintains ≥80 dB CMRR up to 10 kHz under −6 V to +28 V CMV conditions.

Key Specifications

Pinout & Package

AD8202YRZ is supplied in an 8-lead SOIC (R) package, RoHS-compliant, with standard JEDEC MS-012AC footprint. Pin 7 is NC (no connect); all other pins are electrically active as defined below.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar difference amplifier applications.

Compared with INA199A1DRVT and MAX4080TASA+, the AD8202YRZ offers superior CMV rejection at low frequencies (80 dB to 10 kHz), dedicated external filter access at Pin 3, and proven AEC-Q100 qualification - making it optimal for safety-critical automotive current sensing where precision and noise immunity outweigh raw speed.

Availability

AD8202YRZ is available at Aetrix Electronics and suitable for transmission control, diesel injection control, and engine management applications requiring stable component supply across automotive production lifecycles.

Supply support for AD8202YRZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD8202YRZ belongs to Analog Devices' precision difference amplifier product line, engineered specifically for robust current sensing in automotive powertrain and chassis control systems where wide common-mode range and temperature stability are mandatory.

FAQ

What is the maximum continuous common-mode voltage the AD8202YRZ can withstand?

The AD8202YRZ supports a continuous common-mode voltage range of −6 V to +28 V when operated at a 5 V supply voltage. Absolute maximum ratings allow transient input voltage up to 44 V for 400 ms, and continuous input voltage up to 35 V - making it suitable for direct connection to 12 V and 24 V automotive battery rails including load-dump and cold-crank conditions. This specification is confirmed in Table 2 of the Rev. H datasheet.

Can the AD8202YRZ be used with a 3.3 V supply?

No, the AD8202YRZ requires a minimum supply voltage of 3.5 V per the "Operating Range" specification in Table 1 of the Rev. H datasheet. At 3.3 V, the device may fail to meet guaranteed performance including CMV range, output swing, and CMRR. For 3.3 V systems, consider alternatives such as the AD8479 or INA188, which are explicitly rated down to 2.7 V or 3.0 V operation.

How does the 100 kΩ resistor at Pin 3 affect low-pass filtering in the AD8202YRZ?

The 100 kΩ resistor at Pin 3 (A1 output) forms a first-order RC low-pass filter when paired with an external capacitor to ground. For example, a 1 nF capacitor yields a 1.6 MHz cutoff - but practical filtering targets 10–100 kHz to suppress PWM noise while preserving signal integrity. The AD8202YRZ datasheet confirms this node enables "low-pass filter (1-pole or 2-pole)" implementation without degrading dc accuracy or system gain flatness.

Is the AD8202YRZ pin-compatible with other members of the AD820x family?

No - the AD8202YRZ uses an SOIC-8 package with unique pin assignments (e.g., Pin 3 = A1 output, Pin 4 = A2 input). The AD8201 and AD8203 have different pinouts and gain architectures; AD8201 is ×20 fixed but lacks the accessible preamp output node, while AD8203 is ×25 and uses MSOP-8. Interchangeability requires PCB redesign. This is confirmed in Figures 4 and 5 and Table 3 of the Rev. H datasheet.

What is the output voltage swing limitation of the AD8202YRZ at 5 V supply?

At 5 V supply, the AD8202YRZ delivers an output voltage range of 48 mV to 4.8 V, as calculated from A1 saturation (20 mV), A2 input bias current error (4 mV), and ×2 buffer gain (48 mV total low-side error). The high-side limit is specified as 4.8 V in Table 1. This 4.752 V usable range supports 12-bit ADC interfacing with 200 mV headroom for noise margin - verified in the Theory of Operation section (Page 13) and Figure 11.