PT8146 Datasheet, PDF (17/27 Pages) Princeton Technology Corp – 8-Bit 12-Ch I/O DAC

8-Bit 12-Ch I/O DAC
Tel: [phone]
Fax: [phone]
URL: http://www.princeton.com.tw
PT8146
ANALOG OUTPUT NOISE CHARACTERISTIC
(V_DD=V_CCD=V_CCA=5.0V, Ta=+25℃)
Parameter
Symbol
Conditions
Measurement
Condition
Value
Min. Typ. Max.
Unit
Digital supply noise
reduction ratio
PSRD fNOISE=1KHz
1
- - 20 dB
Analog supply noise
reduction ratio
PSRA fNOISE=1KHz
1
- - 20 dB
D/A supply noise
reduction ratio
PSRDA fNOISE=1KHz
1
- - 0 dB
Operating noise
During serial transfer
VN1
During analog operation
During Hi-Z commands
See “Operating Noise VN1”
2
-30 - 30 mV
I/O expander
operating noise 1
Serial → parallel conversion
See “I/O Expander Operating
Noise 1 VN2”
During digital-only pin
VN2
operations
During parallel → serial
2
conversion
ESR setting
During digital input/digital
output switching
-30 - 30 mV
I/O expander
operating noise 2
During serial -> parallel
conversion
See “I/O Expander Operating
Noise 2 VN3”
VN3 During digital/analog capable
2
pin operation
ESR setting
During digital output/digital
output switching
-0.1 - 0.1 V
PT8146 V1.1
- 17 -
February, 2006