MAX1359B Maxim Integrated Products, MAX1359B Datasheet - Page 23

• Manufacturer Part Number: MAX1359B
• Description: Data-Acquisition System
• Manufacturer: Maxim Integrated Products

DataSheet.in
UPIOs, RTC, Voltage Monitors, and Temp Sensor
16-Bit, Data-Acquisition System with ADC, DAC,
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
OUT2
AV
DV
SWA
IN2+
AIN2
AIN1
REG
FBA
IN2-
REF
CF+
CF-
EP
DD
DD
______________________________________________________________________________________
DACA SPST Shunt Switch Input. Connects to OUTA through a 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
and 0.1µF capacitors in parallel as close to the pin as possible.
Amplifier 2 Noninverting Input
Amplifier 2 Inverting Input. Analog input to mux.
Amplifier 2 Output. 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 DAC.
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-.
C har g e- P um p Outp ut. C onnect an exter nal 10µF ( typ ) r eser voi r cap aci tor b etw een C P O U T and D GN D . Ther e i s
a l ow thr eshol d d i od e b etw een D V
w i thi n 300m V ( typ ) of D V
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.
U ser - P r og r am m ab l e Inp ut/O utp ut 1. S ee the U P IO1_C TRL Reg i ster for functionality.
E xp osed P ad . Leave unconnected or connect to AGN D .
D D
.
D D
and C P OU T. When the char g e p um p i s d i sab l ed , C P OU T i s p ul l ed up
FUNCTION
Pin Description (continued)
DD
measurement. Bypass to AGND with 10µF
23