Japan Branch: A-302, M i yamae Vi l l age, 2–10–42 M i yamae, Sugi nami–ku, Tokyo 168, Japan
tel. (905) 632-2996 fax: (905) 632-5946
tel. (03) 3334-7700
fax (03) 3247-8839
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
VALUE/UNITS
5 V DC
25 mW
-10°C to 40° C
-20°C to 70° C
A OUT
B IN
B OUT
R
E
GND
PIN CONNECTION
5
6
A IN
V
MIC
V
B
MPO
1
10
C OUT
CAUTION
CLASS 1 ESD SENSITIVITY
ELECTRICAL CHARACTERISTICS
V
P
- Pin voltage measured with conditions as shown in Test Circuit.
Positive current corresponds to current INTO the pin.
Negative current corresponds with current OUT of the pin.
Conditions: Frequency = 1 kHz, Temperature = 25°C, Supply Voltage V
B
= 1.3 V
PARAMETER
Amplifier Current
Transducer Current
Maximum Transducer Current
A Input Bias Voltage (pin 6)
A Input Bias Current (pin 6)
B Input Bias Current (pin 4)
A O/P Voltage Swing-Hi (pin 5)
A Output Swing-Lo (pin 5)
SYMBOL
I
AMP
I
TRANS
I
TRANS (MAX)
CONDITIONS
MIN
75
170
TYP
140
230
-
570
0
0
580
280
MAX
205
290
-
650
50
50
-
-
UNITS
µA
µA
mA
mV
nA
nA
mV
mV
V
P2
=0V
2
500
V
BIAS A
I
BIAS A
I
BIAS B
V
OH A
V
OL A
R
FA
= 1 M (Note 1)
V
IN
= 0.4 V DC, R
FA
=
∞
,
I
P5
= -10
µA
(Note 3)
I
IN
-50
-50
200
200
R
FB
= 1 M (Note 2)
= +1µA, R
FA
=
∞
,
I
P5
= +10
µA
(Note 4)
A Open Loop Voltage Gain
C Output Sat. Voltage (pin 10)
A Output Current Capability (pin 5)
A
OL
V
SAT C
46
R = 1 kΩ, V
L
P2
56
100
30
265
28.5
4
125
1
1
-
180
-
325
35.5
5
160
-
-
dB
mV
µA
mV
mV
kΩ
Ω
µVRMS
%
=0V
-
-
A
OUT
V
D
V
RE
Diode Voltage Drop
Emitter Bias Voltage (pin 2)
On-chip Microphone Resistor
On-chip Emitter Resistor
Input Referred Noise
Harmonic Distortion
(S2 = b) R
L
=
∞
,
(Note 5)
140
21.5
3
90
R
MIC
R
E
IRN
THD
NFB 0.2 to10kHz at 12dB/Oct
V
OUT
= 500 mV
RMS
-
-
All parameters and switches remain as shown in Test Circuit unless otherwise stated in "Conditions" column
Notes
1.
I
BIAS A
= (V
P6
-V
P6[RFA = 1M]
)/1M
2.
I
BIAS B
= (V
P4
-V
P4 [RFB = 1M]
)/1M
3.
V
OH A
= (V
P5
-V
P5 [VIN = 0.4 VDC, RFA =
∞,
IP5
= -10µA]
)
4.
V
OL A
= (V
P5
-V
P5 [IIN = +1µA, RFA =
∞,
IP5
=+10µA]
)
V
)
5.
V
D
= (V
P10
[Id = +(1.5 x
ITRANS)]
- P10 [Id = +(0.5 x
ITRANS)]
510 - 12 - 07
2
I
AMP
1.3 VDC
I
TRANS
8
7
R
MIC
9
a
V
IN
a
R
S
3k92
C
S
1µ0
R
E
5
180 µV
RMS
1kHz
R
FA
= 0
4
R
FB
= 0
3
1
b
S1
6
21k
S2
b
R
L
=0
-
A
-
B
-
C
10
2
I
d
= 0µA
I
P5
= 0µA
All resistors in ohms, all capacitors in farads unless otherwise stated.
Fig. 1 Test Circuit
R
MIC
7
8
9
5
BASE
CURRENT
COMPENSATION
3
R
E
10
2
6
4
1
All resistors in ohms, all capacitors in farads unless otherwise stated.
Fig. 2 Functional Schematic
3
510 - 12 - 07
V
B
= 1.3 V DC
ED1913
RL
AC
9
21k
0µ1
R
MPO
R
S
≈
3k9
≈
C
S
0µ22
6
50k
8
7
1µ0
R
MIC
-
A
- B
-C
10
2
R
E
0µ1
5
100k
R
GT
0µ1 5k6
4
100k
3
1
56
R
VC
All resistors in ohms, all capacitors in farads unless otherwise stated.
Gain of Stage A = 20 log
R
GT
R
S
Gain of Stage B = 20 log
R
VC
5.6 k
Gain of Stage C = 20 log
RL
AC
//21K
56//R
E
Fig 3 Typical Hearing Instrument Application
5
-5
-15
0
-2
R
VC
= 100K
R
MPO
= 50k
R
MPO
= 22k
R
MPO
= 10k
-4
-6
OUTPUT (dBV)
-25
-35
-45
-55
-65
-75
-140
R
VC
= 47K
R
VC
= 10K
R
VC
= 3.3K
OUTPUT (dBV)
-8
-10
-12
-14
-16
R
MPO
= 0k
R
MPO
= 3.3k
R
VC
= 22K
-120
-100
-80
-60
-40
-18
-20
-90
-80
-70
-60
-50
-40
INPUT (dBV)
INPUT (dBV)
Fig. 4 I/O Curves at Various R
VC
Settings
Fig. 5 I/O Curves at Various R
MPO
Values
5
4
C
S
= 0.22µ
0
0
C
S
= 0.1µ
RELATIVE GAIN (dB)
-4
RELATIVE GAIN (dB)
C
S
= 0.033µ
-5
-10
-15
-20
-25
-30
-8
C
S
= 0.047µ
-12
-16
-20
20
200
2k
20k
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
FREQUENCY (Hz)
SUPPLY VOLTAGE (V)
Fig. 6 Closed Loop Frequency Response
with Various C
S
Values
510 - 12 - 07
Fig. 7 Gain vs Supply Voltage
4
RELATIVE TRANSDUCER CURRENT (µA)
-10
0
10
20
30
40
50
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-20
10
6
2
-2
-6
-10
-14
-18
-20
-10
0
10
20
30
40
50
RELATIVE GAIN (dB)
TEMPERATURE (
o
C)
TEMPERATURE (
o
C)
Fig. 8 Gain vs Temperature
Fig. 9 Transducer Current vs Temperature
24
60
55
50
RELATIVE AMPLIFIER CURRENT (µA)
16
8
-8
-16
-24
-32
-40
-20
-10
0
10
20
30
40
50
Gain (dB)
0
45
40
35
30
25
20
10
100
1k
10k
100k
TEMPERATURE (
o
C)
FREQUENCY (Hz)
Fig. 10 Amplifier Current vs Temperature
Fig. 11 Preamplifier A Open Loop Frequency Response
REVISION NOTES:
Pb/Sn bump removed
DOCUMENT
IDENTIFICATION
PRODUCT PROPOSAL
This data has been compiled for market investigation purposes
only, and does not constitute an offer for sale.
ADVANCE INFORMATION NOTE
This product is in development phase and specifications are
subject to change without notice. Gennum reserves the right to
remove the product at any time. Listing the product does not
constitute an offer for sale.
PRELIMINARY DATA SHEET
The product is in a development phase and specifications are
subject to change without notice.
DATA SHEET
The product is in production. Gennum reserves the right to make
changes at any time to improve reliability, function or design, in
order to provide the best product possible.
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
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