DS1800 Datasheet, PDF (10/14 Pages) Dallas Semiconductor – Dual Inverting Log Gain/Attenuator

DS1800
7. Tap–to–Tap tolerance is used to determine the change in voltage between successive tap positions.
The DS1800 is specified for ±0.5 dB tap–to–tap tolerance. From position 0 to position 112 (+20 dB to
–27 dB). From position 113 to position 127, the DS1800 is specified for ±1 dB tap–to–tap tolerance.
8. Power–up time is the time for all pushbutton 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.
15. Valid at 25°C only.
DS1800 BLOCK DIAGRAM Figure 1
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