Analog Devices Inc./Maxim Integrated MAX1188BCUP+

Overview

The MAX1188BCUP+ from Maxim Integrated is a 16-bit, 135ksps successive-approximation ADC with ±10V bipolar analog input range, single +4.75V to +5.25V analog supply, and byte-wide parallel interface. It features factory-trimmed internal 4.096V reference, ±2 LSB INL, -100dB THD, and AutoShutdown™ reducing current to 0.4mA at 10ksps - ideal for precision industrial process control and medical instrumentation.

For engineers reviewing the MAX1188BCUP+ datasheet, MAX1188BCUP+ pinout, MAX1188BCUP+ application, or MAX1188BCUP+ equivalent, key selection criteria include bipolar ±10V input support, TSSOP-20 package compatibility, internal/external reference flexibility, and low-power shutdown timing behavior at 135ksps sampling rate.

Technical Context

The MAX1188BCUP+ implements a SAR architecture with integrated track-and-hold and input scaler enabling true ±10V bipolar conversion from a single +5V analog supply. Its internal clock eliminates µP timing burden, and conversion completes in ≤4.7µs after second CS falling edge.

Power management is controlled via R/C pin: low during second CS edge enables standby mode (reference active, 3.7mA typical), high selects shutdown mode (reference off, 0.5µA typical). HBEN toggles D0–D7 (LSB) / D8–D15 (MSB) output byte selection on the parallel bus.

Key Specifications

Pinout & Package

MAX1188BCUP+ is housed in a 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch), specified for operation from -40°C to +85°C. Thermal pad is not present; standard reflow profile applies.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit SAR ADC applications.

Compared with ADS8860IDRCT and AD7689BRMZ-RL7, the MAX1188BCUP+ uniquely delivers native ±10V bipolar input, byte-wide parallel interface, and integrated 4.096V reference - making it optimal for legacy industrial controllers and precision DAQ systems prioritizing ease of integration over raw speed.

Availability

MAX1188BCUP+ is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and medical diagnostic equipment requiring stable component supply across extended temperature ranges.

Supply support for MAX1188BCUP+ 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, medical, and communications markets.

The MAX1188BCUP+ belongs to Maxim's precision data-acquisition product line, designed specifically for high-linearity, low-power, single-supply 16-bit ADC applications in harsh environments and battery-operated instruments.

FAQ

What is the operating temperature range for the MAX1188BCUP+?

The MAX1188BCUP+ is rated for operation from -40°C to +85°C, meeting extended industrial temperature requirements. This rating is confirmed in the Ordering Information table where "MAX1188B" denotes the -40°C to +85°C grade, and "CUP" specifies the 20-pin TSSOP package. The device maintains full specification compliance-including ±2 LSB INL and 135ksps sampling-across this entire range.

Does the MAX1188BCUP+ support both internal and external voltage references?

Yes, the MAX1188BCUP+ supports both configurations. With REFADJ tied to AVDD, the internal 4.096V reference is enabled (bypassed with 10µF at REF and 0.1µF at REFADJ). For external reference, drive REF with a 3.8V–4.2V source capable of 100µA DC load and ≤10Ω output impedance. The internal buffer remains active unless explicitly disabled via REFADJ connection.

How does the HBEN pin function in the MAX1188BCUP+?

The HBEN (High-Byte Enable) pin controls byte multiplexing on the parallel data bus: when HBEN = 1, D8–D15 (MSB) are driven; when HBEN = 0, D0–D7 (LSB) appear on the bus. This allows 8-bit microcontrollers to read the full 16-bit result in two consecutive cycles without external latches or glue logic - a key design enabler for legacy embedded systems.

What is the minimum acquisition time required before conversion starts in the MAX1188BCUP+?

The MAX1188BCUP+ requires a minimum acquisition time (tACQ) of 2µs, measured from the second falling edge of CS until conversion begins. During this interval, the internal track-and-hold capacitor charges to the input voltage. This value is guaranteed across temperature and supply conditions, and must be respected to achieve specified ±2 LSB INL performance - especially critical when driving high-impedance or multiplexed sources.

Can the MAX1188BCUP+ interface directly with a 2.7V logic system?

Yes, the MAX1188BCUP+ supports direct interfacing with 2.7V digital logic via its separate DVDD supply pin, which accepts +2.7V to +5.25V. Digital output levels meet VOH ≥ DVDD – 0.4V and VOL ≤ 0.4V at ISINK = 1.6mA, ensuring reliable signaling into 2.7V CMOS inputs. This dual-supply flexibility allows coexistence with low-voltage microcontrollers while maintaining full analog performance on the +5V AVDD rail.