Nuvoton ISD1700 series, Design Manual

Page: 74 / 82

PRELIMINARY ISD1700 SERIES
Publication Release Date: Nov 6, 2008
- 74 - Revision 1.31
14 ELECTRICAL CHARACTERISTICS
14.1
DC P
ARAMETERS
PARAMETER SYMBOL MIN TYP
[1]
MAX UNITS CONDITIONS
Supply Voltage V
DD
2.4 5.5 V
Input Low Voltage V
IL
V
SS
-0.3 0.3xV
DD
V
Input High Voltage V
IH
0.7xV
DD
V
DD
V
Output Low Voltage V
OL
V
SS
-0.3 0.3xV
DD
V I
OL
= 4.0 mA
[2]
Output High Voltage V
OH
0.7xV
DD
V
DD
V I
OH
= -1.6 mA
[2]
Record Current I
DD_Record
20 mA V
DD
= 5.5 V, No load,
Sampling freq = 12 kHz
Playback Current I
DD_Playback
20 mA
Erase Current I
DD_Erase
20 mA
Standby Current I
SB
1 10 µA
[3] [4]
Input Leakage Current I
ILPD1
±
1
µA Force V
DD
Input Current Low I
ILPD2
-3 -10 µA Force V
SS
, others at Vcc
Preamp Input Impedance R
MIC+,
R
MIC-
7 k Ω Power-up AGC
AnaIn Input Impedance R
AnaIn
42 k Ω When active
MIC Differential Input V
IN1
15 300 mV Peak-to-Peak
[5]
AnaIn Input Voltage V
IN2
1 V Peak-to-Peak
Gain from MIC to SP+/- A
MSP
6 40 dB V
IN
= 15~300 mV, AGC =
4.7 µF, V
CC
= 2.4V~5.5V
Speaker Output Load R
SPK
8 Ω Across both Speaker pins
AUX Output Load R
Aux
5 k Ω When active
Speaker Output Power Pout 670 mW V
DD
= 5.5 V 1Vp-p,
1 kHz sine
wave at
AnaIn. R
SPK
= 8 Ω .
313 mW V
DD
= 4.4 V
117 mW V
DD
= 3 V
49 mW V
DD
= 2.4 V
Speaker Output Voltage V
OUT1
V
DD
V R
SPK
= 8 Ω (Speaker),
Typical buzzer
AUX Output Swing V
OUT2
1 V Peak-to-Peak
AUX Output DC Level V
OUT3
1.2 V When active
AUD I
AUD
-3.0 mA V
DD
=4.5 V, R
EXT
= 390 Ω
Volume Output A
Vol
0 to -28 dB 8 steps of 4dB each
reference to output
Total Harmonic Distortion THD 1 % 15 mV p-p 1 kHz sine
wave, Cmessage
weighted
Notes:
[1]
Conditions: V
CC
= 4.5V, 8 kHz sampling frequency and T
A
= 25°C, unless otherwise stated.
[2]
LED output during Record operation.
[3]
V
CCA
, V
CCD
and V
CCP
are connected together. V
SSA
, V
SSP1,
V
SSP2
and V
SSD
are connected together.
[4]
REC
,
PLAY
,
FT
,
FWD
,
ERASE
,
VOL
and
RESET
must be at V
CCD
.
[5]
Balanced input signal applied between MIC+ and MIC- as shown in the applications example. Single-ended MIC+ or
MIC- input is recommended no more than 150 mV p-p.