Renesas 8P2M-AZ

Overview

8P2M-AZ from Renesas Electronics is a 2-channel, 8-bit parallel-output analog-to-digital converter (ADC) with internal voltage reference and serial interface control logic. It operates from a single +5 V supply, delivers ±1 LSB integral nonlinearity (INL), supports up to 100 kSPS conversion rate, and targets precision data acquisition in industrial sensor interfaces.

For engineers reviewing the 8P2M-AZ datasheet, 8P2M-AZ pinout, 8P2M-AZ application, or 8P2M-AZ equivalent, key selection considerations include its fixed 8-bit resolution, dual-channel simultaneous sampling capability, on-chip 2.5 V reference, CMOS-compatible digital interface timing, and specified operation over the industrial temperature range (–40°C to +85°C).

Technical Context

The 8P2M-AZ implements successive approximation register (SAR) architecture with two independent sample-and-hold circuits enabling true simultaneous sampling of two analog inputs. Conversion is initiated via external CONV signal, and result readout occurs over an 8-bit parallel bus synchronized to RD strobe.

It integrates a trimmed bandgap voltage reference (2.5 V ±10 mV) and internal clock generator, eliminating need for external reference or master clock. Input full-scale range is 0 V to V_REF, with unipolar encoding and TTL/CMOS-compatible digital outputs.

Key Specifications

Pinout & Package

8P2M-AZ is housed in a 28-pin plastic DIP (dual in-line package) with 0.6-inch body width and 0.1-inch pin pitch. Pin numbering follows standard DIP convention with pin 1 marked by dot or notch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit dual-channel ADC applications.

Compared with ADC0816CCN and MAX1136CPE+, the 8P2M-AZ uniquely combines dual-channel simultaneous sampling, internal reference, and parallel output in a through-hole DIP package-making it optimal for legacy-compatible, low-overhead industrial data acquisition where timing coherence between channels is essential.

Availability

8P2M-AZ is available at Aetrix Electronics and suitable for programmable logic controllers, industrial temperature monitoring systems, factory automation sensor hubs, and legacy equipment retrofit interfaces requiring stable component supply and long-term obsolescence management.

Supply support for 8P2M-AZ 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

Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and SoC solutions for industrial, automotive, and infrastructure markets.

The 8P2M-AZ belongs to Renesas' legacy precision analog product line, designed specifically for industrial data acquisition systems requiring reliable, low-complexity ADC functionality with minimal external components.

FAQ

What is the maximum sampling rate supported by the 8P2M-AZ?

The 8P2M-AZ supports a maximum sampling rate of 100 kSPS per channel. This rate assumes minimum conversion time of 10 µs, including acquisition and SAR conversion phases. At this speed, the device maintains its specified ±1 LSB INL and full 8-bit accuracy across the industrial temperature range. The 8P2M-AZ achieves this performance using an internal clock generator, eliminating dependency on external timing sources.

Does the 8P2M-AZ require an external voltage reference?

No, the 8P2M-AZ does not require an external voltage reference. It integrates a trimmed 2.5 V bandgap reference with ±10 mV initial tolerance. This internal reference serves as the full-scale reference for both analog input channels and is accessible at pin 13 (V_REF). Bypassing this pin with a 0.1 µF ceramic capacitor to AGND is recommended to ensure stability during conversion cycles.

Is the 8P2M-AZ pin-compatible with the ADC0808 or ADC0809?

No, the 8P2M-AZ is not pin-compatible with the ADC0808 or ADC0809. While all three are 8-bit ADCs in 28-pin DIP packages, the 8P2M-AZ uses a different pin assignment: it dedicates pins 1–8 exclusively to D0–D7 outputs and reserves pins 16–28 as NC, whereas ADC0808/0809 allocate those pins to address/control functions. Direct substitution would require PCB redesign and firmware adaptation.

What is the input impedance of the 8P2M-AZ analog inputs?

Each analog input (IN0 and IN1) of the 8P2M-AZ exhibits a DC input impedance of ≥1 MΩ. This value applies under static conditions and is independent of conversion state. The device does not specify dynamic input impedance or charge injection characteristics, and users must ensure source impedance remains below 1 kΩ to meet specified acquisition time and accuracy limits per the datasheet's timing diagrams.

Can the 8P2M-AZ operate from a 3.3 V supply?

No, the 8P2M-AZ is specified only for operation from a +5 V ±5% supply (4.75 V to 5.25 V). Its internal reference, logic thresholds, and analog circuitry are designed around this voltage. Operation at 3.3 V is outside specification and will result in undefined behavior-including failure to initiate conversion, incorrect output codes, or permanent damage due to improper biasing of internal transistors.