Maxim has released the MAX15500/MAX15501 an integrated
analog-output signal conditioners, which are ideal for PLC
(programmable logic controller) analog outputs, distributed
I/O, embedded systems, and industrial control and automation
systems.
Key features are,
Power supplies operate from a ±24V industrial field
supply
Up to ±32.5V supply voltage
Output is protected up to ±35V
Supports either +4.096V (MAX15500) or +2.5V (MAX15501) input
signals
Programmable output (plus over-range capability): ±10V,
0 to 10V, 0 to 5V, ±20mA, 0 to 20mA, and 4 to 20mA
SPI interface, with daisy-chain capability
Active-low READY output for daisy chaining
DOUT for configuration readback for additional operational
safety
Protection features: short-circuit and overcurrent protection,
open-circuit detection, brownout detection, overtemperature
protection, and additional operational safety
Analog output for load monitoring
Output drives 0 to 1k ohms in current mode
Voltage output drives loads down to 1k ohms
HART compliant
2ppm/°C gain-error drift over temperature
Fast, 40µs settling time
The MAX15500/MAX15501 simplify the design of PLC modules,
and there is a need of precision-matched resistors to track
voltages over temperature. The MAX15500/MAX15501 has integrated
voltage amplifier and voltage-to-current converter to eliminate
the need for those additional resistors. 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, and the output current and voltage
are selectable as either unipolar or bipolar.
These devices offer fault detection, and detect both the
intermittent and permanent load faults. If a fault occurs,
the open-drain fault-interrupt pin will be pulled low. The
status of the fault bits is available through the SPI interface.
The MAX15500/MAX15501 are programmed through a 3-wire SPI-/QSPI-/MICROWIRE-/DSP-compatible
serial interface with daisy-chain capability. For channel-isolated
applications these devices uses a single device where as
multiple devices for group-isolated applications. A device-ready
logic output and two device-select inputs facilitate a daisy-chain
arrangement for multiple device applications. A chain of
MAX15500/MAX15501 devices can be terminated with any standard
SPI-compatible single device. The MAX15500/MAX15501 portion
of the chain continues to display timing parameters comparable
to a single device.
Additionally, the MAX15500/MAX15501 outputs, power-supply
inputs, and sense inputs are protected against overcurrent
conditions, a short to ground, or supply voltages up to
±35V.
Operating temperature range: -40°C to +105°C
Package: ultra-small (5mm x 5mm) 32-pin TQFN package
Price: Starts at $2.96 for 1k pieces
Availability: Now
For more details visit: http://www.maxim-ic.com/MAX15500-15501.
