Analog Devices Inc./Maxim Integrated MAX153CPP

Overview

MAX153CPP from Maxim Integrated is a high-speed, microprocessor-compatible 8-bit analog-to-digital converter (ADC) using half-flash architecture to deliver 660ns conversion time and 1Msps throughput. It operates from single +5V or dual ±5V supplies, supports unipolar/bipolar inputs, and features a dedicated POWERDN pin enabling 1µA typical power-down current-ideal for burst-mode data acquisition in battery-powered systems.

For engineers reviewing the MAX153CPP datasheet, MAX153CPP pinout, MAX153CPP application, or MAX153CPP equivalent, key selection considerations include its µP-compatible parallel interface with latched three-state outputs, internal track/hold, ratiometric reference capability, and fast 200ns wake-up from power-down-critical for low-duty-cycle, high-speed sampling in portable telecom and servo control designs.

Technical Context

The MAX153CPP implements a two-stage half-flash architecture: a 4-bit flash ADC generates the upper 4 bits, then an internal 4-bit DAC produces a residue voltage that feeds a second 4-bit flash stage for the lower 4 bits-enabling full 8-bit resolution without external timing components. Its digital interface supports three modes-RD mode (MODE = GND), WR-RD mode (MODE = VDD), and pipelined mode (WR tied to RD)-each with distinct timing constraints and interrupt behavior.

It integrates latched, three-state output drivers compatible with standard µP data buses, requires no external clock, and uses ratiometric reference inputs (VREF+, VREF−) to maintain accuracy across supply and reference variations. The PWRDN pin must be held high during normal operation and driven low only when CS is high to ensure stable shutdown and sub-µA quiescent current.

Key Specifications

Pinout & Package

MAX153CPP is housed in a 20-pin narrow plastic DIP (PDIP) package with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch, compatible with standard prototyping and production PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX153CPP, MAX152CPP trades speed and power efficiency for resolution, while AD7823KN replaces parallel simplicity with serial flexibility at the cost of latency and shutdown capability-making MAX153CPP uniquely balanced for µP-based, battery-sensitive, high-throughput acquisition.

Availability

MAX153CPP is available at Aetrix Electronics and suitable for cellular telephones, portable radios, and battery-powered systems requiring stable component supply, long-term manufacturability, and RoHS-compliant through-hole packaging.

Supply support for MAX153CPP 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 MAX153CPP belongs to Maxim's high-speed data converter product line, designed specifically for µP-centric, low-power, high-throughput digitization in portable and burst-mode systems-emphasizing interface simplicity, fast wake-up, and supply robustness.

FAQ

What is the maximum sampling rate achievable with the MAX153CPP in WR-RD mode?

The MAX153CPP achieves a maximum sampling rate of 1.23MHz in WR-RD mode (tRD < tINTL), calculated from tWR + tRD + tRI + tP = 250ns + 250ns + 150ns + 165ns. This exceeds its rated 1Msps throughput and is validated under specified timing conditions with CL = 20pF and TA = +25°C. Real-world rates may vary slightly with temperature, supply voltage, and load capacitance.

Does the MAX153CPP require an external clock signal to operate?

No, the MAX153CPP does not require an external clock signal. Its half-flash architecture and integrated timing and control circuitry generate all necessary internal clocks for conversion sequencing. This eliminates clock distribution challenges and jitter sensitivity, allowing direct interfacing with microprocessors using only WR, RD, CS, and MODE control lines.

How does the ratiometric reference feature of the MAX153CPP improve measurement accuracy?

The MAX153CPP's ratiometric reference inputs (VREF+, VREF−) ensure output code depends solely on the ratio VIN/(VREF+ − VREF−), not absolute voltage levels. When VREF+ and VREF− are derived from the same supply as the sensor or signal source, supply drift and noise cancel out-preserving accuracy even with ±5% VDD variation or noisy reference paths, as confirmed in the Electrical Characteristics table.

What is the correct power-down sequence for the MAX153CPP to achieve 1µA current consumption?

To achieve 1µA typical power-down current, drive PWRDN low while ensuring CS is high. Do not assert WR or RD during power-down, and hold MODE low (RD mode) to leverage the internal 50µA pulldown for lowest current. Maintain stable logic levels on all digital inputs-floating pins increase leakage. Verified in Electrical Characteristics: Power-Down VDD Current = 1µA (typ) with VPWRDN = 0V and VCS = 5V.

Can the MAX153CPP interface directly with a 5V microprocessor data bus without level-shifting?

Yes, the MAX153CPP's D0–D7 outputs are latched, three-state, and TTL/CMOS-compatible with VOH ≥ 4V and VOL ≤ 0.4V at specified loads. Its digital inputs accept VIH ≥ 2.4V and VIL ≤ 0.8V-fully compliant with standard 5V µP buses. No level-shifting is needed, and the outputs drive directly into µP data ports as confirmed in Logic Outputs and Logic Inputs sections of the datasheet.