Datasheet

ISD1800 SERIES
Publication Release Date: Jan 15, 2016
- 19 - Revision 1.0
9.2. AC PARAMETERS
[1]
CHARACTERISTIC
SYMBOL
MIN
[
3]
TYP
[2]
MAX
[3]
UNITS
CONDITIONS
Sampling Frequency
F
S
8
KHz
[4]
Filter Pass Band
F
CF
ISD1806
2.2
KHz
3 dB Roll-Off Point
R
OSC
= 100 KΩ
[5][6]
ISD1810
2.2
Record Duration
T
REC
ISD1806
7.5
sec
R
OSC
= 100KΩ
[4]
ISD1810
10
Playback Duration
T
PLAY
ISD1806
7.5
sec
R
OSC
= 100KΩ
[4]
ISD1810
10
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 Nuvoton 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.