LC89086M Datasheet, PDF (5/6 Pages) Sanyo Semicon Device – 8 Bit A/D Converter

LC89086M
Pin Functions
Pin No. Pin name
I/O
Function
1
OEB
Digital output enable input
I
High: high-impedance
Low: Normal operation
2
DV_SS
3
AV_SS
4
Vref HO
Digital ground
Analog ground
Internal reference voltage (high) generation. Shorting this pin to VrefH (pin 5) generates a voltage of 2.0 V.
O
This pin must be left open when the internally generated potential is not used.
5
Vref H
I
Reference voltage input (high)
6
AIN
I
Analog input
7
Vref M
O Reference voltage intermediate level tap.
8
Vref L
I
Reference voltage input (low)
9
Vref LO
Internal reference voltage (low) generation. Shorting this pin to VrefL (pin 8) generates a voltage of 0 V.
O
This pin must be left open when the internally generated potential is not used.
10
AV_DD
11
AV_SS
12
DV_SS
13
DV_DD
14
D8
Analog power supply
Analog ground
Digital ground
Digital power supply
O Digital output (LSB)
15
D7
O Digital output
16
D6
O Digital output
17
D5
O Digital output
18
D4
O Digital output
19
D3
O Digital output
20
D2
O Digital output
21
D1
O Digital output (MSB)
22
OF
O Digital output (Overflow)
23
CLK
I
Clock input
24
DV_DD
Digital power supply
Note: There must be no potential difference between the digital system and analog system V_DD and V_SS power supply potentials.
I/O Code Table
The table below lists the relationship between the input and output when VrefH and VrefL are set up so that the zero
transient voltage is 0.000 V and the full-scale transient voltage is 2.008V.
Analog input
V_AIN (V)
Up to 0.000
Up to 0.008
Up to 0.016
Up to 0.024
Up to 0.032
Digital output
OF
D1
D2
D3
D4
D5
D6
D7
D8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
to
Up to 0.992
Up to 1.000
Up to 1.008
Up to 1.016
0
0
1
1
1
1
1
1
0
0
0
1
1
1
1
1
1
1
0
1
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
to
Up to 1.992
Up to 2.000
Up to 2.008
Over 2.008
0
1
1
1
1
1
1
0
1
0
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
No. 5428-5/6