TS7003
PIN FUNCTIONS
PIN
1
2
3
4
5
6
7
8
NAME
VDD
AIN
SH
GND
REF
CS
DOUT
SCLK
FUNCTION
Power Supply Voltage, +2.7V to +3.6V.
Analog Signal Input; Unipolar, 0 to VREF input range.
Active-Low Shutdown Input. Toggling SH
high-to-low powers down the TS7003 and reduces
the supply current to 0.2μA (typ).
Analog and igital Ground. Connect the TS7003’s G
pin at one and only one point to the
system analog ground plane.
Reference Voltage for Analog-to-Digital Conversion – an internal 2.5V reference output. Bypass
with a good-quality 4.7μF capacitor.
Active-Low Chip Select. The CS signal initiates the conversion process on its falling edge. When
the CS input is logic high, DOUT is high impedance.
Serial-Data Output. DOUT toggles state on SCLK’s rising edge and is high impedance when CS
is logic high.
Serial-Clock Input. The SCLK signal controls the conversion process and transfers output data
at rates up to 4.8MHz.
Figure 1:
Output Loading Circuits for DOUT Enable Time (t
DOE
).
Figure 2:
Output Loading Circuits for DOUT Disable Time (t
DOD
).
TS7003DS r1p0
Page 7
RTFDS
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
