LC508 Просмотр технического описания (PDF) - Gennum -> Semtech
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LC508 Datasheet PDF : 4 Pages
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ABSOLUTE MAXIMUM RATINGS
PARAMETER
VALUE / UNITS
Supply Voltage
5V DC
Power Dissipation
Operating Temperature
Storage Temperature
25 mW
-10o to + 40oC
-20o to + 70oC
CAUTION
CLASS 1 ESD SENSITIVITY
PIN CONNECTION
V MIC
5
A IN
B IN
A OUT
GND
1
6
VB
C OUT
RE
C IN
10
B OUT
ELECTRICAL CHARACTERISTICS
Conditions: Supply Voltage =1.3 VDC, Frequency = 1 kHz, Temperature = 25 oC
PARAMETER
SYMBOL CONDITIONS
MIN
Gain (Closed Loop)
Amplifier Current
Transducer Current
Transducer Current
Distortion
Input Referred Noise
ACL
VOUT = 500 VRMS
69
IAMP
IAMP = IA + IMIC
160
ITRANS H
RE = 47.5
1.1
ITRANS L
RE = ∞
200
THD
VOUT = 500 VRMS
-
IRN
NFB 0.2 to 10kHz at 12dB/Oct
-
Stable with Battery Resistance to RB
-
Input Bias Current
IB
-50
On Chip Emitter Resistor
RE
-
Emitter Bias Voltage (pin 8)
VRE
-
Microphone Decoupling Resistor RMIC
-
All switches and parameters remain as shown in Test Circuit unless otherwise stated in Conditions column.
TYP
73
245
1.3
275
1
1
-
0
200
54
4
MAX
77
340
1.7
350
4
2
22
50
-
-
-
UNITS
dB
µA
mA
µA
%
µV
Ω
nA
Ω
mV
kΩ
33 K
IMIC
3.3 K
1.0
10
IB
VIN
1kHz
5 RMIC
4
-A
2
R FA
56.2K
IAMP
6
VB=1.3 VDC
R B =4.7
V OUT
RL = 1K
-B
-C
7
ITRA NS
8
RE
CS
0.015
3
R1 CS IB
2.7K 1.0
10
9
R FB
47.5K
1.0
1
R E =47.5
All resistors in ohms, all capacitors in µF unless otherwise stated
500 - 61 - 12
Fig. 1 Test Circuit
2
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