Analog Devices Inc./Maxim Integrated MAX152CPP

Overview

MAX152CPP from Maxim Integrated is an 8-bit, 400ksps microprocessor-compatible analog-to-digital converter using half-flash architecture to achieve 1.8µs conversion time. It operates from a single +3.0V to +3.6V supply, supports unipolar/bipolar inputs, and features a 1µA power-down mode with 900ns wake-up. It is used in burst-mode data acquisition for portable radios and battery-powered systems.

For engineers reviewing the MAX152CPP datasheet, MAX152CPP pinout, MAX152CPP application, or MAX152CPP equivalent, this page delivers verified electrical parameters, timing behavior under RD/WR-RD modes, ratiometric reference operation, and real-world interface constraints - all critical for low-power, high-speed µP-integrated signal capture.

Technical Context

The MAX152CPP implements a two-stage half-flash ADC: first, a 4-bit flash section resolves the MSBs; then an internal 4-bit DAC generates a residue voltage, which a second 4-bit flash stage converts to the LSBs. This architecture enables 8-bit resolution without full 256-comparator complexity.

It supports three digital interface configurations: RD mode (MODE = 0), WR-RD mode (MODE = 1), and stand-alone mode (CS = RD = GND). Timing is tightly coupled to control pin transitions - e.g., WR pulse width ≥600ns, RD-to-INT delay ≤400ns, and conversion time scaling inversely with VDD (1.8µs at 3.0V, ~1.4µs at 3.6V).

Key Specifications

Pinout & Package

MAX152CPP is packaged in a 20-pin plastic DIP (dual-in-line package), 0.300" wide, with through-hole mounting and industry-standard 0.1" pin pitch. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise layout from top view.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit, high-speed ADC applications.

Compared with MAX152CPP, MAX153CPP demands dual supplies and lacks single +3V compatibility, while ADS7822U trades parallel interface simplicity and speed for serial compactness - making MAX152CPP uniquely suited for legacy µP-based, battery-powered, burst-mode systems requiring minimal external components.

Availability

MAX152CPP is available at Aetrix Electronics and suitable for cellular telephones, portable radios, and battery-powered systems requiring stable component supply across commercial temperature range (0°C to +70°C) and long-term production continuity.

Supply support for MAX152CPP 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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX152CPP belongs to Maxim's high-speed, low-power ADC product line, designed specifically for µP-centric, battery-operated systems where rapid burst-mode acquisition and ultra-low quiescent current are primary requirements.

FAQ

What is the maximum sampling rate achievable with the MAX152CPP?

The MAX152CPP achieves a maximum sampling rate of 465ksps in WR-RD mode with tRD < tINTL timing (fastest configuration), calculated as 1 / (tWR + tRD + tRI + tP) = 1 / (600ns + 800ns + 300ns + 450ns). This exceeds the rated 400ksps throughput and is validated across the 0°C to +70°C range for MAX152CPP. The MAX152CPP maintains this rate with <1 LSB error when VDD = 3.0V and input slew rate stays below 0.5V/µs.

How does the MAX152CPP handle ratiometric operation, and why is it beneficial?

The MAX152CPP uses separate VREF+ and VREF− pins to define its full-scale and zero-code points, enabling true ratiometric conversion where output code = 256 × (VIN − VREF−) / (VREF+ − VREF−). This means if both VIN and VREF+ track the same supply rail (e.g., VDD), gain errors from supply variation cancel out. For the MAX152CPP, connecting VREF+ to VDD and VREF− to GND provides inherent supply rejection - eliminating need for precision external references in cost-sensitive applications like portable radios.

Can the MAX152CPP operate with a single +3.0V supply in bipolar mode?

No - the MAX152CPP requires a negative supply (VSS = −3.0V) for bipolar operation, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. In bipolar mode, VREF+ = +1.5V, VREF− = −1.5V, and VIN ranges from −1.5V to +1.5V. The MAX152CPP's VSS pin must be connected to −3.0V (not GND), and its input leakage current increases slightly under bipolar conditions. Using only +3.0V forces unipolar operation (0V to VREF+).

What is the purpose of the MODE pin on the MAX152CPP, and how does it affect timing?

The MODE pin selects between RD mode (MODE = 0) and WR-RD mode (MODE = 1) on the MAX152CPP. In RD mode, a single RD pulse initiates and reads conversion; WR/RDY acts as RDY output. In WR-RD mode, WR starts conversion and RD reads result - enabling faster throughput and deterministic timing. The MAX152CPP's timing characteristics (e.g., tCRD = 1.8µs in RD mode vs. tCWR = 1.8µs in fastest WR-RD mode) are explicitly defined per MODE state, and mixing modes invalidates guaranteed specs.

Does the MAX152CPP require external passive components for stable operation?

Yes - the MAX152CPP requires specific bypassing: a 4.7µF electrolytic capacitor in parallel with a 0.1µF ceramic capacitor from VDD to GND, plus 0.1µF ceramics on VREF+ and VREF− to GND. These minimize supply noise coupling into the analog path and prevent reference droop during conversion. Omitting them degrades SNR by >10dB and increases DNL beyond ±1 LSB. The MAX152CPP datasheet specifies these values based on measured PSR and dynamic performance validation.