AK5434D Datasheet, PDF (8/13 Pages) Asahi Kasei Microsystems – Dual channel 14bit 30MHz A/D Converter with differential input

ASAHI KASEI
[AK5434D]
Functional Description
Power down function
Power Down mode can be activated by applying a logic Level “0” to the PDN-pin. All the data
output pins [D13: D0] become Low state.at Power Down mode.
PDN
L
H
Condition
Power down
Normal opration
S/H AMP gain select
The gain of the S/H amplifier can be selected by the input level of GAIN-pin.
GAIN
AVSS
AVDD
VCM
Gain
0dB
6dB
12dB
Input full scale
4Vpp-diff
2Vpp-diff
1Vpp-diff
Sampling timing setting
The sampling timing of two channels can be set with SS-pin.
SS
Sampling timing
L
S/H1 or S/H2 samples the signal according to CHSEL.
H
At CHSEL=L, S/H1 and S/H2 sample the signal at the same time.
Sampling channel select
The samples timing can be selected with CHSEL-pin.
Separate sampling (@SS=Low)
CHSEL
Sampling channel
L
S/H1
H
S/H2
Simultaneous sampling (@SS=High)
CHSEL
Sampling channel
L
S/H1 & S/H2
H
Not sampled
Only at CHSEL=Low, sampling is done at the same timing (SS=High).
MS1515-E-00
-8-
2013/02