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GK504 の電気的特性と機能

GK504のメーカーはGennum Corporationです、この部品の機能は「Low Current Preamplifier」です。


製品の詳細 ( Datasheet PDF )

部品番号 GK504
部品説明 Low Current Preamplifier
メーカ Gennum Corporation
ロゴ Gennum Corporation ロゴ 




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GK504 Datasheet, GK504 PDF,ピン配置, 機能
FEATURES
designed to drive Class D integrated receivers
adjustable peak clipper
low current drain
low noise and distortion
www.DataSheet4Ulo.cwomexternal parts count
two low noise preamplifiers
transconductance output stage
mid supply referenced output
preamp A for Gain Trim or Telecoil
STANDARD PACKAGING
• 10 pin MICROpac
• 10 pin PLID®
• 10 pin SLT
• Chip ( 56 x 84 mils)
Au Bump
Low Current Preamplifier
with Output Limiting
GK504 - DATA SHEET
DESCRIPTION
The GK504 is Gennum’s proprietary low current preamplifier
designed to drive the Class D series receivers. It consists of
two independent single-ended, low noise inverting amplifiers,
a symmetrical peak clipping, mid-supply referenced,
transconductance output stage, and an on-chip microphone
decoupling resistor.
Blocks A and B typically have an open loop voltage gain of
53 dB, with the closed loop gain set by the ratio of the feedback
resistor to source impedance. It is recommended that the
maximum closed loop gain be 20 dB lower than the open loop
gain. All blocks of the device are internally bias compensated
preventing any DC current flow via external feedback resistors.
Without this compensation, audible scratchiness would be
present during changes in Volume Control settings. It is
acceptable to DC-couple blocks A and B of the device,
however the third stage must be AC coupled in order to
maintain DC bias requirements.
The major advantage of the GK504 over other preamplifiers is
the electronic MPO adjustment. Since conventional MPO is
not possible in the class D receivers, it is provided electronically.
The maximum output swing is easily set using an R resistor.
MPO
The receiver output level is thus limited, preventing it from
exceeding the discomfort level.
VMIC 3
R MIC
AIN 2
A
B
RP1
C
RP2
4 VB
5C
OUT
1 10
A OUT BIN
U.S. Patent No.07/354,327
98
BOUT CIN
76
R MPO GND
BLOCK DIAGRAM
Revision Date; May 1998
Document No. 520 - 47 - 05
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996
Web Site: www.gennum.com E-mail: [email protected]

1 Page





GK504 pdf, ピン配列
3
VIN DC
IBIAS
2
RMIC
A
B
4 VB=1.3 VDC
RP1
IAMP
C
5 0µ1
VOUT
RP2
www.DataSheet4U.com
RF=0
1
IL=0
10 9
I BIAS
RF=0
VINDC
IL=0
8
1µ0
76
RMPO=10k
VINAC=
0VRMS
1kHz
All resistors in ohms, all capacitors in µF, unless otherwise stated.
RL
50k
Fig. 1 Test Circuit
RMIC
3
BASE CURRENT
COMPENSATION
2
9
1
10
2.5k
All resistors in ohms, all capacitors in µF, unless otherwise stated.
7
33k
8
Fig. 2 Functional Schematic
4
48k
5
48k
6
3 520 - 47 - 05


3Pages


GK504 電子部品, 半導体
10
-10
-30
-50
-70
-90
-110
-130
www.DataSheet4U.com 1
10 100 1k
R
MPO
()
10k 100k
Fig. 10 Change in Supply Current vs RMPO
-10
-14
-18
-22
-26
-30
-34
-38
-42
0 10 100 1k 10k 100k
RMPO ()
Fig. 12 Maximum Output vs RMPO
(as in Fig. 1, VINAC= -15dBV)
-12
-16
-20
-24
-28
-32
-36
-50
55
-40 -30
-20
INPUT (dBV)
-10
Fig. 11 I/O for Amplifier C
(as in Fig. 1)
0
50
1M 1M
10µ
45
1.3V
2.2k 10µ
PREAMP
VOUT
40 VAC
35
10 100 1k
10k
FREQUENCY (Hz)
Fig. 13 Preamplifiers A and B
Open Loop Voltage Gain
100k
DOCUMENT IDENTIFICATION: 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.
REVISION NOTES:
Updated to Data sheet
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright July 1990 Gennum Corporation. All rights reserved.
520 - 47 - 05
6
Printed in Canada.

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共有リンク

Link :


部品番号部品説明メーカ
GK504

Low Current Preamplifier

Gennum Corporation
Gennum Corporation
GK509

Class A Amplifier

Gennum
Gennum


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