Data Sheet

NAU7802 24-bit ADC
Nuvoton Confidential - 6 - Revision 1.7
5 PIN CONFIGURATION
REFN
VBG
AVSS
2
1
4
3
6
5
8
7
VIN2N
VIN1P
VIN2P
VIN1N
REFP
14
15
12
13
10
11
9
16
DVSS
XIN
XOUT
DVDD
SDIO
SCLK
DRDY
AVDD/LDO
SOP-16
(150mil)
or
DIP-16
6 PIN DESCRIPTION
Pin No.
Pin Name
Type
DESCRIPTIONS
1
REFP
AI
Positive reference input
2
VIN1N
AI
Inverting Input #1
3
VIN1P
AI
Non-Inverting Input #1
4
VIN2N
AI
Inverting Input #2
5
VIN2P
AI
Non-Inverting Input #2
6
VBG
A
High impedance Reference Voltage Output and Bypass
7
REFN
AI
Negative Reference Input
8
AVSS
P
Analog Ground
9
DVSS
P
Digital ground
10
XIN
I
External crystal oscillator input. Typically 4.9152 MHz
11
XOUT
O
External crystal oscillator output.
12
DRDY
O
Data Ready Output indicating a conversion is complete and
new data are available for readout. (CMOS Driver high / low)
13
SCLK
I
Serial Data Clock Input (CMOS open drain output)
14
SDIO
I/O
Data Input / Output for serial communication with host
(CMOS open drain output)
15
DVDD
P
Digital power supply: 2.7V ~ 5.5V
16
AVDD/LDO
P
Analog power supply:
1. From programmable LDO output, low ESR 1 ohm or less
capacitor recommended
2. LDO off: external power supply: 2.7V ~ 5.5V
Note : TYPE P: Power, AI: Analog input, AO: Analog output, I: input, O: output, I/O: bi-directional