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PDF LD512 Data sheet ( Hoja de datos )
| Número de pieza | LD512 | |
| Descripción | Low Parts Compression Amplifier | |
| Fabricantes | Gennum Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LD512 (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
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Low Parts
Compression Amplifier
GB512/LD512 DATA SHEET
FEATURES
DESCRIPTION
• 44 dB typical preamplifier gain
• 14 dB typical output stage gain
• compression function ratio 1:1 to 2:1 to ∞:1
• automatic setting of transducer current
• operation down to 1.1 VDC
• greater than 40 dB volume control range
The GB512 and LD512 are 8 pin stand-alone input compression
amplifiers requiring minimal external parts. Each consists of a
voltage regulator for the electret microphone providing a high
power supply rejection ratio (PSRR), a compression stage
which has a 2:1 compression ratio, and an auto-biasing,
class A, voltage drive output stage.
The auto-bias output stage can drive a variety of impedances
ranging from 500 Ω to 5 kΩ without adding any external
resistors to set the bias.
STANDARD PACKAGING
The GB512 and LD512 are recommended for low to medium
gain/output ITE and ITC type hearing aids.
• 8 pin PLID
• 8 pin SLT (LD512)
• Chip (61 x 61 mils)
Au Bump
The GB512 is tested to tighter test limits.
DataSheet4U.com
DataShee
VREG 4
VB
5
VREG
3
A IN
28 dB
-A
CONTROL
2
CAGC
200 mV
REF
16 dB
-B
+_ C
6
GND
18
B OUT C IN
BLOCK DIAGRAM
7
C OUT
DataSheet4U.com
Revision Date: January 2001
Document No. 500 - 75 - 08
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Japan Branch: A-302, Miyamae Village, 2-10-42, Miyamae, Suginami-ku, Tokyo 168, JapDanataStehl. e(e03t4) U33.c3o4-m7700 fax (03) 3247-8839
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1 page  
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1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-20
-10 0 10 20 30
TEMPERATURE (˚C)
Fig. 8 Gain vs Temperature
40
50
30
20
10
0
-10
-20
-30
-40
-50
-20
-10
0 10 20 30 40 50
TEMPERATURE (˚C)
Fig. 9 Receiver Bias Voltage vs Temperature
et4U.com
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60 DataSheet4U.com
-70
-20
-10
Fig. 10
0 10 20 30
TEMPERATURE (˚C)
40
Amplifier Current vs Temperature
50
REVISION NOTES
Changes to standard packaging information.
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 preproduction 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.
DataSheet4U.comGennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright Sept. 1982 Gennum Corporation. All rights reserved. Printed in Canada.
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5 500 - 75 - 08
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| PDF Descargar | [ Datasheet LD512.PDF ] | |
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