AK5483 Datasheet, PDF (3/14 Pages) Asahi Kasei Microsystems – 10Bit 20MHz 3CH A/D Converter

ASAHI KASEI
* Pin Descriptions [48LQFP]
PIN Symbol
NO.
1 DA8
2 DA7
3 D VDD
4 DVSS
5 DA6
6 DA5
7 DA4
8 DA3
9 DA2
10 DA1
11 DAO
12 SEL
13 CEN
14 CKI
15 AVDD
16 AVSS
17 AINA
T ype
O
O
P
P
O
O
O
O
O
O
O
I
I
I
P
P
I
Description & F unction
CH A OUTPUT D8
CH A OUTPUT D7
Digital Supply(3.3V[TYP.])
Digital G round 0V
CH A OUTPUT D6
CH A OUTPUT D5
CH A OUTPUT D4
CH A OUTPUT D3
CH A OUTPUT D2
CH A OUTPUT D1
CH A OUTPUT D0(LSB)
Sampling Frequency SELECT
Upper Lim it of Sam pling Clock(CKI) F requency is determ ined
by this pin.
Low : 15MHz mode
High : 20MHz m ode
Always connect to High or Low.
CHIP ENABLE(Power Down Control )
LOW :Normal Operating Mode
High: Power down & All Di gital Output= High-Z
CLO CK Input
Input Pin for Sam pling Clock
Analog Supply (3.3V[TYP.])
Analog Ground 0V
ANALOG INPUT(CH A)
18 VREFP O
19 AINB I
VREF Voltage f or internal circuit
Place 0.1uF C eram ic Cap. between AVSS.
ANALOG INPUT(CH B)
20 VCO M O
21 AINC I
VREF Voltage f or internal circuit
Place 0.1uF C eram ic Cap. between AVSS.
ANALOG INPUT(CH C )
22 VREFN O
23 VTP I
24 VBT I
VREF Voltage f or internal circuit
Place 0.1uF C eram ic Cap. between AVSS.
VREF Top Voltage Input Pin[To set Analog Input Range]
VIN Full Scale R ef erence pin.
VREF Bottom Voltage Input Pin[To set Analog Input Range]
VIN Zero Scale Ref erence pin.
[AK5483]
M0035-E-01
-3-
1999/03