ADS8472I BURR-BROWN [Burr-Brown Corporation], ADS8472I Datasheet - Page 8

• Manufacturer Part Number: ADS8472I
• Description: 16-BIT, 1-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE, REFERENCE
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

ADS8472
SLAS514 – DECEMBER 2006
8
PIN ASSIGNMENTS
NAME
AGND
BDGND
BUSY
BYTE
CONVST
CS
Data Bus
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
8, 9, 17, 20,
NC − No internal connection
NOTE: The package thermal pad must be soldered to the printed circuit board for thermal and mechanical performance.
23, 24, 26,
2, 37
NO
27
48
28
29
30
31
32
33
34
35
38
39
40
41
42
3
4
6
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
–
–
I
I
I
Analog ground
Digital ground for bus interface digital supply
Status output. High when a conversion is in progress.
Byte select input. Used for 8-bit bus reading.
0: No fold back
1: Low byte D[9:2] of the 16 most significant bits is folded back to high byte of the 16 most significant pins DB[17:10].
Convert start. The falling edge of this input ends the acquisition period and starts the hold period.
Chip select. The falling edge of this input starts the acquisition period.
D15 (MSB)
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
CONVST
BDGND
AGND
AGND
REFM
REFM
+VBD
BYTE
+VA
+VA
RD
CS
BYTE = 0
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37
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TERMINAL FUNCTIONS
8-BIT BUS
RGZ PACKAGE
D7
D6
D5
D4
D3
D2
All ones
All ones
All ones
All ones
All ones
All ones
All ones
(TOP VIEW)
BYTE = 1
DESCRIPTION
36
35
34
33
32
31
30
29
28
27
26
25
+VBD
DB8
DB9
DB10
DB11
DB12
DB13
DB14
DB15
AGND
AGND
+VA
D15(MSB)
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
16-BIT BUS
BYTE = 0
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