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ADAU1977WBCPZ-R7 Datenblatt(PDF) 11 Page - Analog Devices

Teilenummer ADAU1977WBCPZ-R7
Bauteilbeschribung  Quad ADC with Diagnostics
PDF  68 Pages
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADAU1977WBCPZ-R7 Datenblatt(HTML) 11 Page - Analog Devices

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Data Sheet
ADAU1977
Rev. C | Page 11 of 68
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 5. Pin Configuration, 40-Lead LFCSP
Table 9. Pin Function Descriptions
Pin No.
Mnemonic
In/Out1
Description
1
AGND1
P
Analog Ground.
2
VREF
O
Voltage Reference. Decouple this pin to AGNDx with 10 µF||100 nF capacitors.
3
PLL_FILT
O
PLL Loop Filter. Return this pin to AVDDx using recommended loop filter components.
4
AVDD2
P
Analog Power Supply. Connect this pin to analog 3.3 V supply.
5
AGND2
P
Analog Ground.
6
PD/RST
I
Power-Down Reset (Active Low).
7
MCLKIN
I
Master Clock Input.
8
FAULT
O
Fault Output. Programmable logic output.
9
SA_MODE
I
Standalone Mode. Connect this pin to IOVDD using a 10 kΩ pull-up resistor for standalone mode.
10
DVDD
O
1.8 V Digital Power Supply Output. Decouple this pin to DGND with a 0.1 µF capacitor.
11
DGND
P
Digital Ground.
12
IOVDD
P
Digital Input and Output Power Supply. Connect this pin to a supply in the range of 1.8 V to 3.3 V.
13
SDATAOUT1
O
ADC Serial Data Output Pair 1.
14
SDATAOUT2
O
ADC Serial Data Output Pair 2.
15
LRCLK
I/O
Frame Clock for the ADC Serial Port.
16
BCLK
I/O
Bit Clock for the ADC Serial Port.
17
SDA/COUT
I/O
Serial Data Output I2C/Control Data Output (SPI).
18
SCL/CCLK
I
Serial Clock Input I2C/Control Clock Input (SPI).
19
ADDR0/CLATCH
I
Chip Address Bit 0 Setting I2C/Chip Select Input for Control Data (SPI).
20
ADDR1/CIN
I
Chip Address Bit 1 Setting I2C/Control Data Input (SPI).
21
PGND
P
Power Ground Boost Converter.
22
PGND
P
Power Ground Boost Converter.
23
SW
I
Inductor Switching Terminal.
24
SW
I
Inductor Switching Terminal.
25
VBOOST_OUT
O
Boost Converter Output. Decouple this pin to PGND with a 10 µF capacitor.
26
VBOOST_IN
I
MICBIAS Regulator Input. Connect this pin to VBOOST_OUT (Pin 25).
27
MICBIAS
O
Microphone Bias Output. Decouple this pin to AGNDx using a 10 µF capacitor.
28
MB_GND
P
Analog Return Ground for the Microphone Bias Regulator. Connect this pin directly to AGNDx
for best noise performance.
29
AGND3
P
Analog Ground.
30
VBAT
I
Voltage Sense for Diagnostics. Connect this pin to a load dump suppressed battery voltage.
Decouple this to AGNDx using a 0.1 µF capacitor.
PIN 1
INDICATOR
1
AGND1
2
VREF
3
PLL_FILT
4
AVDD2
5
AGND2
6
PD/RST
7
MCLKIN
8
FAULT
9
SA_MODE
NOTES
1. THE EXPOSED PAD MUST BE CONNECTED TO THE GROUND PLANE ON THE PCB.
10
DVDD
23 SW
24 SW
25 VBOOST_OUT
26 VBOOST_IN
27 MICBIAS
28 MB_GND
29 AGND3
30 VBAT
22 PGND
21 PGND
TOP VIEW
(Not to Scale)
ADAU1977



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