PACAC97 California Micro Devices Corp, PACAC97 Datasheet - Page 3

• Manufacturer Part Number: PACAC97
• Description: PC AUDIO RESISTOR NETWORK
• Manufacturer: California Micro Devices Corp

© 2000 California Micro Devices Corp. All rights reserved.
9/27/2000
Figure 1 shows a cross talk measurement of the micro-
phone to the Right Codec CD signal. The microphone
amplifier output pin (pin 18) is driven with a 2Vrms
signal. The Right CD Codec signal is terminated by a
Channel-to-Channel Crosstalk: Microphone CD
Inter-channel Crosstalk: AMP2-AMP1 (LINE_OUT)
Figure 2 shows a crosstalk measurement of Left to Right
channel for the gain setting resistors of the headphone
amplifier (referred to as AMP1 and AMP2). The IN2
(output from Codec) and the AMP_OUT2 pin (pins 23
and 25) are driven by a 2Vrms source. The AMP_OUT1
is terminated by a 10KΩ resistor while the IN1 pin is
215 Topaz Street, Milpitas, California 95035
CALIFORNIA MICRO DEVICES
GND
10KΩ
2Vms
GND
28
33KΩ
27
GND
6 AC97MIC
22KΩ
10KΩ
GND
1KΩ
Tel: [phone]
18 MIC_AMP_OUT
510Ω
100Ω
TP2
26
Figure 1*.
Figure 2*.
GND
5,7,22
10KΩ load resistor while pins 5,7,17 and 22 on the
device are grounded. Crosstalk measured over the audio
band of 20Hz–20KHz is in excess of –90dB.
terminated with a 1KΩ resistor which represents the
output impedance of the LINE_OUT output of the Codec.
Pins 5, 7, 22 and 24, on the device are grounded.
Crosstalk measured over the audio band of
20Hz to 20KHz is in excess of –90dB.
25
2Vms
33KΩ
17
6.8KΩ
6.8KΩ
24
22KΩ
GND
GND
8
Fax: [phone]
10KΩ
AC97CD_R
2Vms
23
TP1
GND
5, 7, 22
GND
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PACAC97
3