MAX1358B Maxim Integrated Products, MAX1358B Datasheet - Page 25

• Manufacturer Part Number: MAX1358B
• Description: Data-Acquisition System
• Manufacturer: Maxim Integrated Products

DataSheet.in
16-Bit, Data-Acquisition System with ADC, DACs,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
PIN
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
—
CPOUT
NAME
AGND
DGND
UPIO1
OUTA
OUTB
AV
DV
SWA
SWB
AIN2
AIN1
REG
CF+
FBA
FBB
REF
CF-
EP
DD
DD
______________________________________________________________________________________
Exposed Pad. Leave unconnected or connect to AGND.
DACA SPST Shunt Switch Input. Connects to OUTA through an SPST switch.
DACA Force-Sense Feedback Input. Analog input to mux.
DACA Force-Sense Output. Analog input to mux.
Analog Ground
Analog Supply Voltage. Also ADC reference voltage during AV
10µF and 0.1µF capacitors in parallel as close to the pin as possible.
DACB SPST Shunt Switch Input. Connects to OUTB through an SPST switch.
DACB Force-Sense Feedback Input. Analog input to mux.
Force-Sense DACB Ouput. Analog input to mux.
Analog Input 2. Analog input to mux. Inputs have internal programmable current source for external
temperature measurement.
Analog Input 1. Analog input to mux. Inputs have internal programmable current source for external
temperature measurement.
Reference Input/Output. Output of the reference buffer amplifier or external reference input. Disabled at
power-up to allow external reference. Reference voltage for ADC and DACs.
Linear Voltage-Regulator Output. Charge-pump-doubler input voltage. Bypass REG with a 10µF capacitor
to DGND for charge-pump regulation.
Charge-Pump Flying Capacitor Terminals. Connect an external 10µF (typ) capacitor between CF+ and CF-.
Charge-Pump Output. Connect an external 10µF (typ) reservoir capacitor between CPOUT and DGND. There is
a low threshold diode between DV
within 300mV (typ) of DV
Digital Supply Voltage. Bypass to DGND with 10µF and 0.1µF capacitors in parallel as close to the pin as
possible.
Digital Ground. Also ground for cascaded linear voltage regulator and charge-pump doubler.
User-Programmable Input/Output 1. See the UPIO1_CTRL Register for functionality.
DD
.
DD
and CPOUT. When the charge pump is disabled, CPOUT is pulled up
FUNCTION
Pin Description (continued)
DD
measurement. Bypass to AGND with
25