參數(shù)資料
型號(hào): UPD9930G-22
廠商: NEC Corp.
元件分類: Codec
英文描述: LINEAR CODEC FOR DIGITAL CELLULAR TELEPHONE
中文描述: 線性編解碼器數(shù)字蜂窩電話
文件頁(yè)數(shù): 71/78頁(yè)
文件大小: 336K
代理商: UPD9930G-22
μ
PD9930
71
+
V
ref
0 to 10 dB
0 dB or –3 dB
0 to –2.8 dB
(0.4 dB steps)
A/D
0
–10
–20
–30
–40
–50
–60
–18.4 dBm
–28.4 dBm
–10 dBm0
–15.8 dBm0
[dBm]
0
–10
–20
–30
–40
–50
–60
[dBm0]
Analog
gain control
Digital
gain control
Voice send level diagram (accessory input)
Remarks 1.
Thick line: Indicates case where gain of microphone amplifier is set to 0 dB, gain of analog gain control
to 0 dB, and gain of digital gain control to 0 dB.
Thin line:
Indicates case where gain of microphone amplifier is set to 10 dB, gain of analog gain control
to –3 dB, and gain of digital gain control to –2.8 dB.
2.
Overload level: 3.17 dBm0.
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