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參數(shù)資料
| 型號： | KA22292Q |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | PB/REC EQ ST PRE AMP(重放/錄音立體聲均衡放大器) |
| 中文描述： | 鉛/承包均衡圣前級（重放/錄音立體聲均衡放大器） |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 194K |
| 代理商： | KA22292Q |
KA22292/Q
PB/REC EQ ST PRE AMP
Constant K is a gain to be fixed but K
5
is variable. Only K
5
can be used to adjust the final record gain.
GEQ = K
5
(K
3
G
BPF
+ A
HPF
)
K
3
= 0.5, K
4
= 0.5
If K
5
is 10, the record maximum output level is 1 Vrms and the output noise is 0.8 mVrms. We recommend that you
keep it between 10 and 20 if possible.
Point A is pin 2 and pin 35, B is pin 44 and pin 42.
K
5
, close loop gain, is R/Rrr.
We must connect R
GP
, R
F/Q
, R
GL
and RGM to the ground.
R
GP
= PIN39
FQ
= PIN40
R
F/Q
= PIN41
R
GM
= PIN45
R
GL
= PIN46
R
IREF
= PIN31
C
L
= PIN38, PIN47
3. CONNECTION FOR PARAMETERS
For varying the record frequency responce, we must connect the external resistor.
In the following figure, current flows from transistor through resistor. As we know, the current is defined as (1.2 V-1
VBE)/R, amount of this current influence for Gm (transconductance amplifier trensfer ratio).
AHPF
+
ALPF
K1
BPF
K4
K3
+
K5
INPUT
OUTPUT
(Record equalizer block)
+
-
B
R = 20K
Rrr
A
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| KA224 | 功能描述:運算放大器 - 運放 Quad OP amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| KA224_Q | 功能描述:運算放大器 - 運放 Quad OP amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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