General Description

The MAX15500/MAX15501 analog output conditioners

provide a programmable current up to ±24mA, or a voltage

up to ±12V proportional to a control voltage signal.

The control voltage is typically supplied by an external

DAC with an output voltage range of 0 to 4.096V for the

MAX15500 and 0 to 2.5V for the MAX15501. The output

current and voltage are selectable as either unipolar or

bipolar. In the unipolar configuration, a control voltage

of 5% full-scale (FS) produces a nominal output of 0A

or 0V to achieve underrange capability. A control voltage

of 100%FS produces one of two programmable levels

(105%FS or 120%FS) to achieve overrange capability.

The outputs of the MAX15500/MAX15501 are protected

against overcurrent conditions and a short to ground or

supply voltages up to ±35V. The devices also monitor for

overtemperature and supply brownout conditions. The

supply brownout threshold is programmable.

The MAX15500/MAX15501 are programmed through an

SPI™ interface capable of daisy-chained operation. The

MAX15500/MAX15501 provide extensive error reporting

through the SPI interface and an additional open-drain

interrupt output. The devices include an analog output to

monitor load conditions.

The MAX15500/MAX15501 operate over the -40°C to

+105°C temperature range. The devices are available in

a 32-pin, 5mm x 5mm TQFN package.

Applications

● Programmable Logic Controllers (PLCs)

● Distributed I/Os

● Embedded Systems

● Industrial Control and Automation

Benefits and Features

● Supply Voltage Up to ±32.5V

● Output Protected Up to ±35V

● Programmable Output (Plus Overrange)

• ±10V

• 0 to 10V

• 0 to 5V

• ±20mA

• 0 to 20mA

• 4 to 20mA

● Current Output Drives 0 to 1kΩ

● Voltage Output Drives Loads Down to 1kΩ

● HART Compliant

● 2ppm Gain Error Drift Over Temperature

● SPI Interface, with Daisy-Chain Capability

● Supports +4.096V (MAX15500) or +2.5V

(MAX15501) Full-Scale Input Signals

● Extensive Error Reporting

• Short-Circuit and Overcurrent Protection

• Open-Circuit Detection

• Brownout Detection

• Overtemperature Protection

● Fast, 40μs Settling Time