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參數(shù)資料
| 型號： | AK4620B |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 24-Bit 192kHz Audio CODEC with IPGA |
| 中文描述： | 24位192kHz的音頻編解碼器與單親遺傳算法 |
| 文件頁數(shù)： | 37/42頁 |
| 文件大小： | 410K |
| 代理商： | AK4620B |
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ASAHI KASEI
[AK4620B]
MS0401-E-00
2005/07
- 37 -
4. Analog Inputs
4-1. Single-ended Input (ADMODE pin = “L”)
The IPGA inputs are single-ended. The input resistance of IPGA is typically 5.1k
at IPGA=0dB and typically
1.18k
at IPGA=+18dB. The input signal is typically AC coupled through a capacitor. The cut-off frequency is fc =
(1/2
π
RC). The input signal range scales with the VREF voltage and is nominally 3.07Vpp (VREF=5V) centered
around the internal common voltage (about VA/2). In single-ended mode, the AK4620B includes an anti-aliasing
filter (RC filter) to attenuate noise around 128fs.
4-2. Full-Differential Input (ADMODE pin = “H”)
The AK4620B can accept input voltages from AGND to VA.
The input signal range scales with the VREF voltage and
is nominally 2.82Vpp (VREF = 5V), centered around the internal common voltage (about VA/2). Figure 17 shows an
input buffer circuit example. This is a fully differential input buffer circuit with an inverted amplifier (gain:
10dB).
The capacitor of 10nF between AINL+/
(AINR+/
) decreases the clock feedthrough noise of the modulator, and
composes a 1st order LPF (fc=360kHz) with a 22
resistor before the capacitor. This circuit also has a 1st order LPF
(fc=370kHz) composed of op-amp. The evaluation board should be referred about the detail.
AIN+
AIN-
AK4620B
Analog In
4.7k
4.7k
VP+
VP-
NJM5532
47
μ
3k
470p
910
22
47
μ
3k
470p
910
22
Bias
10n
9.3Vpp
2.82Vpp
2.82Vpp
Bias
10
μ
0.1
μ
Bias
10k
10k
VA
VA = 5V
VP+ = 15V
VP- = -15V
Figure 17. Input Buffer example in differential mode
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| AK4626AVQ | High Performance Multi-channel Audio CODEC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4620BVF | 制造商:AKM 制造商全稱:AKM 功能描述:24-Bit 192kHz Audio CODEC with IPGA |
| AK4620BVFPE2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
| AK4620BVFP-E2 | 功能描述:IC AUDIO CODEC 24BIT 30VSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:PCM 數(shù)據(jù)接口:PCM 音頻接口 分辨率（位）:15 b ADC / DAC 數(shù)量:1 / 1 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):- 動態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):- 電壓 - 電源，模擬:2.7 V ~ 3.3 V 電壓 - 電源，數(shù)字:2.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-VFBGA 供應(yīng)商設(shè)備封裝:80-BGA MICROSTAR JUNIOR（5x5） 包裝:帶卷 (TR) 其它名稱:296-21257-2 |
| AK4621 | 制造商:AKM 制造商全稱:AKM 功能描述:24-Bit 192kHz Stereo Audio CODEC |
| AK4621EF | 制造商:AKM 制造商全稱:AKM 功能描述:24-Bit 192kHz Stereo Audio CODEC |
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