參數(shù)資料
型號: CS8420-CSZ
廠商: Cirrus Logic Inc
文件頁數(shù): 76/94頁
文件大?。?/td> 0K
描述: IC SAMPLE RATE CONVERTER 28SOIC
標(biāo)準(zhǔn)包裝: 27
類型: 采樣率轉(zhuǎn)換器
應(yīng)用: CD-R,DAT,DVD,MD,VTR
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 28-SOIC
包裝: 管件
產(chǎn)品目錄頁面: 759 (CN2011-ZH PDF)
配用: 598-1782-ND - EVALUATION BOARD FOR CS8420
其它名稱: 598-1125-5
78
DS245F4
CS8420
14. EXTERNAL AES3/SPDIF/IEC60958 TRANSMITTER AND RECEIVER
COMPONENTS
This section details the external components required to interface the AES3 transmitter and receiver to cables and
fiber-optic components.
14.1
AES3 Transmitter External Components
The output drivers on the CS8420 are designed to drive both the professional and consumer interfaces. The
AES3 specification for professional/broadcast use calls for a 110
Ω source impedance and a balanced drive
capability. Since the transmitter output impedance is very low, a 110
Ω resistor should be placed in series
with one of the transmit pins. The specifications call for a balanced output drive of 2-7 volts peak-to-peak
into a 110
Ω load with no cable attached. Using the circuit in Figure 30, the output of the transformer is short-
circuit protected, has the proper source impedance, and provides a 5 volts peak-to-peak signal into a 110
Ω
load. Lastly, the two output pins should be attached to an XLR connector with male pins and a female shell,
and with pin 1 of the connector grounded.
In the case of consumer use, the IEC60958 specifications call for an unbalanced drive circuit with an output
impedance of 75
Ω and a output drive level of 0.5 V peak-to-peak ±20% when measured across a 75 Ω load
using no cable. The circuit shown in Figure 31 only uses the TXP pin and provides the proper output imped-
ance and drive level using standard 1% resistors. The connector for a consumer application would be an
RCA phono socket. This circuit is also short circuit protected.
110-(R
TXP+RTXN)
TXP
TXN
XLR
1
CS8420
Figure 30. Professional Output Circuit
374-R
TXP
90.9
Ω
TXP
TXN
RCA
Phono
CS8420
Figure 31. Consumer Output Circuit
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CS8420-CSZR/D1 制造商:Cirrus Logic 功能描述:
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