Rainbow Electronics ISD1800 - Manual (Page 18)

ISD1800 SERIES
- 18 -
10.2. AC P ARAMETERS
[1]
CHARACTERISTIC SYMBOL MIN [
3]
TYP [2] MAX [3] UNITS CONDITIONS
Sampling Frequency F
S
8 KHz [4]
ISD1806 2.2 Filter Pass Band F
CF
ISD1810 2.2
KHz 3 dB Roll-Off Point
R
OSC
= 100 KΩ [5][6]
ISD1806 7.5 Record Duration T
REC
ISD1810 10
sec R
OSC
= 100KΩ [4]
ISD1806 7.5 Playback Duration T
PLAY
ISD1810 10
sec R
OSC
= 100KΩ [4]
EOM Pulse Width T
EOM
84 msec
Debounce Time T
DB
84 msec
Total Harmonic
Distortion THD 1 % @ 1KHz,
V
IN
=15mV pk-to-pk
Speaker Output Power P
OUT
24.4 mW R
EXT
= 8Ω
Voltage Across Speaker
Pins V
OUT
1.25 2.5 Vp-p R
EXT
= 600Ω
MIC Input Voltage 15 300 mV Peak-to-Peak [7]
Notes:
[1] These specifications apply with R
OSC
= 100KΩ, unless stated.
[2] Typical values @ T
A
= 25 ° and V
CC
= 3.0V.
[3] All Min/Max limits are guaranteed by Winbond via electrical testing or characterization. Not all
specifications are 100 percent tested.
[4] Oscillator stability may vary as much as +5% over the operating temperature and voltage ranges. (Only
the 7.5 sec duration of I1806 and 10 sec duration of I1810 are tested/guaranteed)
[5] Low-frequency cutoff depends upon value of external capacitors (see Pin Descriptions)
[6] Filter specification applies to the anti-aliasing filter and to the smoothing filter.
[7] Balanced input signal applied between MIC and MIC REF as shown in the applications example. Single-
ended MIC or MIC REF recommended to be less than 100 mV peak to peak.