Rainbow Electronics DS1800 - Manual (Page 9)

DS1800
072095 9/13
8. Power–up time is the time for all push–button inputs to be stable and active once power has reached a valid
level, 2.7V min.
9. Absolute tolerance is used to determine wiper voltage versus expected wiper voltage as determined by wiper
position. The DS1800 is bounded by a ± 0.5 dB absolute tolerance from position 0 to position 112 and ± 1 dB
tolerance from position 113 to position 127.
10. Maximum current specifications are based on clock rate, active zero–crossing detection, and push–button
activation.
11. Valid for V
CC
=3V or 5V.
12. Standby current levels apply when all inputs are driven to appropriate supply levels.
13. These parameters are characterized and not 100% tested.
14. See Figure 9.
DS1800 BLOCK DIAGRAM Figure 1
IN1 OUT0 IN1 OUT1
129–TO–1 MULTIPLEXER 129–TO–1 MULTIPLEXER
CONTROL
LOGIC
UNIT
W0 W1
POTENTIOMETER–0 POTENTIOMETER–1
WIPER–0 (8–BIT REGISTER) WIPER–1 (8–BIT REGISTER)
CLK
3–WIRE SERIAL
INTERFACE
POS–0 POS–128 POS–0 POS–128
B0 B7 B8 B15
D
RST COUT
MODE
P0G
P0A
P1G
P1A
PUSHBUTTON CONTROL
INPUTS