ISL22102_15 Datasheet, PDF (6/12 Pages) Intersil Corporation – 32 Tap, Push-button, Dual Audio Logarithmic Potentiometer with Buffer Amplifiers and Audio Detection

ISL22102
AC Timing Over recommended operating conditions (Continued)
SYMBOL
PARAMETER
MIN
TYP
MAX
(Note 8) (Note 4) (Note 8) UNITS
t_{FLAG_LOW} FLAG Delay Time Interval Step Size, from D2:D0 = 001b to 111b.
30
s
FLAG is Asserted LOW when Audio Input is Below Threshold. (See Table 1, page 7)
t_ZAWS
(Note 7)
Zero Amplitude Detection Time for Wiper Switching
32
ms
t_LOW
Active LOW PU, DN or MUTE Pulse
20
ms
t_GAP
Time Between Two Separate Push-Button Events
80
ms
NOTES:
4. Typical values are for AVCC = VCC = 2.7V to 5.0V, T_A = +25°C.
5. T_A = +25°C, AVCC = 5.0V; 2Hz to 20kHz Measurement Bandwidth, input signal 1V_RMS, 1kHz Sine Wave.
6. When pin is open, voltage is pulled up through current source to VCC.
7. Limits should be considered typical and are not production tested.
8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization
and are not production tested.
Timing Diagrams
UP
(DN, MUTE)
V_W
t_LOW
t_GAP
t_WRPO
MI (Note 9)
FIGURE 1. DIGITAL INPUT TIMING
t_DB + t_ZAWS
UP
V_W
MI (Note 9)
AUTO INCREMENT 4Hz RATE
AUTO INCREMENT 8Hz RATE
1s
4s
FIGURE 2. AUTO INCREMENT TIMING
NOTE:
9. MI in these timing diagrams refers to the minimum incremental change of the output (wiper) voltage.
6
FN6788.2
September 21, 2015