ak5365 AKM Semiconductor, Inc., ak5365 Datasheet - Page 20

• Manufacturer Part Number: ak5365
• Description: 24-bit 96khz ?? Adc With Selector/pga/alc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The input ATTs are constructed by adding the input resistor (Ri) for LIN1-5/RIN1-5 pins and the feedback resistor (Rf)
between LOPIN (ROPIN) pin and LOUT (ROUT) pin (Figure 7). The input voltage range of the IPGAL/IPGAR pin is
typically 0.2 x AVDD (Vrms). If the input voltage of the input selector exceeds 0.2 x AVDD, the input voltage of the
IPGAL/IPGAR pins must be attenuated to 0.2 x AVDD by the input ATTs. Table 9 shows the example of Ri and Rf.
MS0164-E-01
Input Attenuator
Example for input range
Input Range
4Vrms
2Vrms
1Vrms
Ri
Ri
Ri
Ri
Ri
Ri
Ri
Ri
Ri
Ri
Ri [k ]
47
47
47
RIN1
RIN2
RIN3
RIN4
RIN5
LIN1
LIN2
LIN3
LIN4
LIN5
Table 9. Input ATT example
Figure 7. Input ATT
ROPIN
LOPIN
Rf [k ]
12
24
47
- 20 -
ROUT
Pre-Amp
LOUT
Rf
Rf
Pre-Amp
ATT Gain [dB]
11.86
5.84
0
IPGAL
IPGAR
To IPGA
To IPGA
IPGAL/R pin
1.02Vrms
1.02Vrms
1Vrms
[AK5365
2002/08
]