MX877R IXYS, MX877R Datasheet - Page 56

• Manufacturer Part Number: MX877R
• Description: IC DVR RELAY/LOAD 8CH 60V 28-QFN
• Manufacturer: IXYS

Specifications of MX877R

• Input Type: Parallel/Serial
• Number Of Outputs: 8
• Current - Output / Channel: 80mA
• Voltage - Supply: 6 V ~ 60 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• On-state Resistance: -
• Current - Peak Output: -

MX844
12 BIT, MULTI-CHANNEL POWER & TEMP
SENSOR FOR MONITOR & CONTROL SYSTEMS
Features
• Wide Input Supply Range: 4.5V to 40V
• Programmable gain differential amplifier (±10mV, ±25mV,
• 4 channel differential input multiplexer (3 input channels
• Integrated 12-bit ADC
• Serial data output (SDO) with data ready pin
• Fine calibration of Full Scale Range (FSR) using VTRIM
• Bi-directional Current Sense
• Internal temperature sensor with 0.2°C resolution
• Compatible with 3.3V and 5V Microcontrollers
• Operating Temperature Range: -40°C to 85°C
• 5mm x 5mm, QFN-28 RoHS Package
Ordering Information
Functional Block Diagram
Typical Application
34
DRV
Battery charge/discharge current, voltage, temperature
RIN
VIN
IN1P
IN2P
IN3P
IN1N
IN2N
IN3N
GND
VTRIM
Part No.
MX844R
MX844RTR
±50mV, ±250mV ranges)
plus ground)
pin
Batt
T
Load
Charging
system
Regulator
Description
QFN-28 Tube
QFN-28 Tape & Reel
VCC
IN
IN
IN
MX844
BUF
Temperature
Sensor
CAZ
ADC
uP
CINT
73
Qty
2500
IZ
Control
Isolated voltage, current, and temperature sensing
Rectifier
Registers
General Description
The MX844 is a fully integrated subsystem that measures
temperature plus differential current and voltage. An internal
temperature sensor measures ambient temperature with 2.5°C
accuracy. Current and voltage measurements are made
differentially through a four input multiplexer connected to a
programmable gain fully differential sense amplifier. The diffe-
rential sense amplifier is optimized to measure very small
positive or negative voltages near ground for low side bi-
directional sensing. A dual slope ADC converts the temperature
sensor or sense amplifier outputs to a 12-bit digital word that
includes 3 ½ digits plus sign. The input multiplexer channel and
programmable gain amplifier range may be changed between
ADC conversions. An on-chip voltage regulator enables the
MX844 to operate over a wide input voltage range of 4.5 to 40
volts.Controller interrupt or over-voltage/over-current signals
may be generated by a pair of 12-bit digital comparators
configured as a window comparator or simple threshold
detection function. The serial port supports standard 4-wire
synchronous serial data, or asynchronous serial „talk-only“
data, and is compatible with most 3.3V and 5V microcontrollers.
Load
Divider
Serial
I/O
IN
IN
MX844
M1
SDI
SDO
SCK
CS
AOUT
DRDY
CMP
X1
X2
SYNC
eeprom
93C46
uP