HD49334AF Datasheet, PDF (3/23 Pages) Renesas Technology Corp – CDS/PGA & 10-bit A/D Converter

HD49334AF/AHF
Pin Description (cont.)
Pin No. Symbol
Description
32
BIAS
33
AVDD
34
NC
Internal bias pin
Connect a 33 kΩ resistor between BIAS and AVSS.
Analog power supply (3 V)
No connection pin
35
AVSS
Analog ground (0 V)
36
ADCIN
ADC input pin
37
VRM
38
VRT
39
VRB
40
NC
Reference voltage pin 1
Connect a 0.1 µF ceramic capacitor between VRM and AVSS.
Reference voltage pin 3
Connect a 0.1 µF ceramic capacitor between VRT and AVSS.
Reference voltage pin 2
Connect a 0.1 µF ceramic capacitor between VRB and AVSS.
No connection pin
41
DVSS
Digital ground (0 V)
42
OEB *¹
Digital output enable pin
43
DVDD
Digital power supply (3 V)
44
DVDD
Digital power supply (3 V)
45
DVSS
Digital ground (0 V)
46
CS
Serial interface control input pin
47
SDATA
Serial data input pin
48
SCK
Serial clock input pin
Note: 1. With pull-down resistor.
Analog(A) or
I/O Digital(D)
—A
—A
——
—A
—A
—A
—A
—A
——
—D
—D
—D
—D
—D
I
D
I
D
I
D
Rev.1.0, Apr 20, 2004, page 3 of 22