STV0502 Просмотр технического описания (PDF) - STMicroelectronics
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STV0502 Datasheet PDF : 15 Pages
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STV0502
ELECTRICAL CHARACTERISTICS
Tamb = 25oC, VDD = VCC = 5V, unless otherwise specified (continued)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
MICROPHONE PREAMPLIFIER
VBIAS Bias Audio Voltage
Pin 26
3.8
V
IN_ref Micro Input Voltage
Pin 33
2
V
RIN Input Impedance
Pin 33
50
kΩ
GFIX Overall Gain
AGC Mode off
48 50 52 dB
GAGC Overall Gain
AGC Mode on
VAGC = 0.5V
VAGC = 4V
54 56 58 dB
20 34 dB
Regulated Output Level On Pins 30/31, AGC on, Input = [1.5mVPP ; 30mVPP]
ALC1
AGClevel (Pin 39) = 0
1.1 1.5 1.9 VPP
ALC2
AGClevel (Pin 39) = 5
0.7 1 1.3 VPP
Ich AGC Charge Current On Pin 29 when signal out above threshold
500
µA
Idis AGC Discharge Current All the time with AGC on
-1
µA
tATT Output Response Time Step +6dB, CAGC = 2.2µF
5
ms
tDEC Output Response Time Step -6dB, CAGC = 2.2µF
2.5
s
OUT_Max Output Clipping Level
Pins 30/31
AGC off : VIN = 5mVPP
AGC on : VIN > 40mVPP
1.7 2
VPP
1.7 2
VPP
OUT_DC Output DC Voltage
Pins 30/31
2.1
V
OUT_OF
ROUT
THD
PSRR
CMRR
LFc
HFc
Xtalk
Channel DC Mismatch
Output Impedance
Overall THD
PSRR from VCC
CMRR from VCC
Low Cut-off Frequency
High Cut-off Frequency
Xtalk from video to audio
Pins 30/31
Pins 30/31
1VPP out, 1kHz signal, BW 15kHz
f = 1kHz, VCC + sine 100mVPP (2)
f = 1kHz, VCC + sine 100mVPP (2)
CIN = 2.2µF, CACC = 10µF
CIN = 2.2µF, CACC = 10µF
Measure on Pins 30/31, compared to Pin 38 (2)
-350 0 350 mV
100
Ω
0.15 0.4 %
60
dB
60
dB
250 Hz
20
kHz
60
dB
Notes : 2. On a 20Hz to 10MHz frequency range, with 10µF filtering capacitors on all supplies, and well splitted supplies and grounds.
Figure 7
INPUT
+6dB
-6dB
OUTPUT
tATT
tDEC
10/15
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