SX8724C Datasheet, PDF (13/67 Pages) Semtech Corporation – ZoomingADC for sensing data acquisition

ADVANCED COMMUNICATIONS & SENSING
5 Pin Description
SX8724C
ZoomingADC for sensing data acquisition
DATASHEET
Note
The bottom pin is internally connected to VSS. It should also be connected to
VSS on PCB to reduce noise and improve thermal behavior.
Pin Name
1
AC3
2
AC6
3
AC7
4
AC4
5
AC5
6
VBATT
7
VSS
8
READY
9
D1
10
D3
11
D2
12
D0
13
SDA
14
SCL
15
VPUMP
16
AC2
Type
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Power Input
Power Input
Digital Output
Digital IO + analog input
Digital IO
Digital IO
Digital IO + analog output
Digital IO
Digital IO
Power IO
Analog Input
Function
Differential sensor input in conjunction with AC2
Differential sensor input in conjunction with AC7
Differential sensor input in conjunction with AC6
Differential sensor input in conjunction with AC5
Differential sensor input in conjunction with AC4
2.4V to 5.5V power supply
Chip ground
Conversion complete flag.
Digital output sensor drive (VBATT or VSS)
VREF input in optional operating mode
I2C address bit 1. Msb address bits are fuse programmed.
Digital output sensor drive (VBATT or VSS)
Digital output sensor drive (VBATT or VSS)
Digital output sensor drive (VBATT or VSS)
VREF output in optional operating mode
I2C address bit 0. MSB address bits are fuse programmed.
I2C data line
I2C clock line. Up to 400 kHz.
Charge pump output. Raises analog switch supply above VBATT if VBATT supply is
too low. Recommended range for capacitor is 1nF to 10 nF. Connect the
capacitor to ground.
Differential sensor input in conjunction with AC3
Revision 1.01
© Semtech
January 2011
Page 13
www.semtech.com/products/