TS7003
PIN FUNCTIONS
PIN
1
2
NAME FUNCTION
VDD
AIN
Power Supply Voltage, +2.7V to +3.6V.
Analog Signal Input; Unipolar, 0 to VREF input range.
Active-Low Shutdown Input. Toggling SHꢀꢁ high-to-low powers down the TS7003 and reduces
the supply current to 0.2μA (typ).
Analog and ꢀigital Ground. Connect the TS7003’s Gꢁꢀ 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.
3
4
5
6
7
8
SHꢀꢁ
GND
REF
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.
CS
DOUT
SCLK
Figure 1: Output Loading Circuits for DOUT Enable Time (tDOE).
Figure 2: Output Loading Circuits for DOUT Disable Time (tDOD).
TS7003DS r1p0
Page 7
RTFDS
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
