參數(shù)資料
型號(hào): PGA2500IDB
英文描述: Digitally Controlled Microphone Preamplifier
中文描述: 數(shù)控麥克風(fēng)前置放大器
文件頁(yè)數(shù): 6/16頁(yè)
文件大?。?/td> 197K
代理商: PGA2500IDB
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SBOS289A NOVEMBER 2003 REVISED DECEMBER 2003
www.ti.com
6
TYPICAL CHARACTERISTICS (continued)
All specifications at T
A
= +25
°
C, VA+ = +5V, VA = 5V, VD = 5V, and V
COM
IN = 0V, unless otherwise noted.
THD+N vs FREQUENCY
(R
S
= 40
, R
L
= 600
, V
COM
IN = +2.5V, BW = 22Hz to 22kHz)
20
100
1k
10k
20k
Frequency (Hz)
T
0.1
0.01
0.001
0.0001
V
OUT
= 1.0Vrms Differential for All Gain Settings
60dB
50dB
40dB
30dB
0dB
20dB
10dB
BANDWIDTH vs GAIN
10
15
20
25
30
35
Gain (dB)
40
45
50
55
60
65
B
7
6
5
4
3
2
1
0
THD+N vs OUTPUT AMPLITUDE
0.3
0.30
Output Amplitude (Vrms)
3.00
6.00
T
0.1
0.01
0.001
0.0003
Gain = 30dB
f = 1kHz
V
COM
IN = 0V
R
S
= 40
R
L
= 600
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