AK5434D Datasheet, PDF (3/13 Pages) Asahi Kasei Microsystems – Dual channel 14bit 30MHz A/D Converter with differential input

ASAHI KASEI
[AK5434D]
Pin Description
No. Name
1 PDN
2 D13
3 D12
4 D11
5 D10
6 D9
7 D8
8 D7
9 D6
10 D5
11 D4
12 D3
13 D2
14 D1
15 D0
16 SS
17 CHSEL
18 AVSS
19 AVDD
20 AI1P
21 AI1N
22 VCM
23 AI2N
24 AI2P
25 VRP
26 CLKI
27 GAIN
28 IREF
29 DVSS
30 DVDD
(NOTE)IO
I/O @Power
Description
down
I
− Power down（H: Normal Operation, L: Power down）
O High-Z ADC output data MSB Straight binary code
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data
O High-Z ADC output data LSB
I
− Sampling timing setting
L: Sampling timing is determined by applying Logic to
CHSEL-pin.
H: The sampling timing is the timing of CHSEL=L. Ch1 and Ch2
are sampled simultaneously.
I
− Ch1/Ch2 select（L:Ch1, H:Ch2）
PWR
− Analog Ground
PWR
− Analog supply（3.0V～3.45V）
I
− Ch1 differential input P side
I
− Ch1 differential input N side
O High-Z Common-mode voltage output
Connect 1μF between AVSS and this pin.
I
− Ch2 differential input N side
I
− Ch2 differential input P side
O
L ADC Reference-voltage output.
Connect 1μF between AVSS and this pin.
I
− ADC clock input
I
− S/H gain setting (L:0dB, M:12dB, H:6dB)
O High-Z bias current output
Connect 8.2kΩ between AVSS and this pin.
PWR
− Digital Ground
PWR
− Digital Power Supply（3.0V~3.45V）
I: INPUT, O: OUTPUT, PWR: POWER/GROUND
MS1515-E-00
-3-
2013/02