Rainbow Electronics ISD1700 - Manual (Page 14)

ISD1700 SERIES
- 14 -
9 ELECTRICAL CHARACTERISTICS
9.1 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
Playback Current I
DD_Playback
20 mA
Erase Current I
DD_Erase
20 mA
V
DD
= 5.5 V, No load,
Sampling freq = 12 kHz
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 kΩ Power-up AGC
AnaIn Input Impedance R
AnaIn
42 kΩ 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 kΩ When active
670 mW V
DD
= 5.5 V
313 mW V
DD
= 4.4 V
117 mW V
DD
= 3 V
Speaker Output Power Pout
49 mW V
DD
= 2.4 V
1Vp-p,
1 kHz sine
wave at
AnaIn. R
SPK
= 8 Ω.
Speaker Output Voltage V
OUT1
V
DD
V R
SPK
= 8Ω (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.