ak5367a AKM Semiconductor, Inc., ak5367a Datasheet - Page 19

• Manufacturer Part Number: ak5367a
• Description: 96khz 24-bit ?? Adc With 0v Bias Selector
• Manufacturer: AKM Semiconductor, Inc.

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The input ATTs are constructed by adding the input resistor (Ri) for LIN1-4/RIN1-4 pins and the feedback resistor (Rf)
between LOPIN/ROPIN pin and LOUT/ROUT pin
typically 0.6 x AVDD (Vpp). If the input voltage of the input selector exceeds typ. 0.6 x AVDD, the input voltage of the
LISEL/RISEL pins must be attenuated to 0.6 x AVDD by the input ATTs.
Note: The value of Ri is over 10kΩ.
MS0967-E-00
Pre-Amp and Input Attenuator
• Example for input range
Input Range
4Vrms
2Vrms
1Vrms
Ri
Ri
Ri
Ri
Ri
Ri
Ri
Ri
Ri [kΩ]
RIN1
RIN2
RIN3
RIN4
47
LIN1
LIN2
LIN3
LIN4
47
47
Figure 13. Pre-Amp and Input ATT
Table 5. Input ATT example
ROPIN
LOPIN
(Figure
Rf [kΩ]
12
24
47
- 19 -
ROUT
Pre-Amp
13). The input voltage range of the LISEL/RISEL pin is
LOUT
Rf
Rf
Pre-Amp
C1=10μF
C1=10μF
ATT Gain [dB]
−11.86
LISEL
RISEL
−5.84
Table 5
0
ADC
ADC
shows the example of Ri and Rf.
LISEL/RISEL pin
1.02Vrms
1.02Vrms
1Vrms
[AK5367A]
2008/05