PRODUCT SPECIFICATION
TMC1203
Pin Descriptions
Pin Name
A/D Converters
V
INA
, V
INB
,
V
INC
R
TA
, R
TB
, R
TC
R
BA
, R
BB
, R
BC
CLK
A
, CLK
B
,
CLK
C
DA
7-0
12, 55, 48
14, 53, 50
15, 52, 51
9, 58, 45
R
TX
to
R
BX
2.6V
0.6V
CMOS
Analog Inputs.
The input voltage conversion range lies between the
voltage applied to the R
TX
and R
BX
pins. R
TX
, R
BX
.
Reference Voltage, Top Inputs.
DC voltages applied to R
TA
, R
TB
and R
TC
define highest value of V
INX
.
Reference Voltage, Bottom Inputs.
DC voltages applied to R
BA
,
R
BB
and R
BC
define highest value of V
INX
.
Convert (Clock) Inputs.
A/D converter clock inputs. CMOS-
compatible. V
INX
is sampled on the falling edge of CLK
X
. Clock
inputs are separate for the three converters.
Data outputs, Converter A (D
7
= MSB).
Eight-bit CMOS- and
TTL-compatible digital outputs. Valid data is output on the rising
edge of CLK
X
.
Data outputs, Converter B (D
7
= MSB).
Eight-bit CMOS- and
TTL-compatible digital outputs. Valid data is output on the rising
edge of CLK
X
.
Data outputs, Converter C (D
7
= MSB).
Eight-bit CMOS- and
TTL-compatible digital outputs. Valid data is output on the rising
edge of CLK
X
.
Output Enable Inputs.
CMOS-compatible. When LOW, the A/D
output is enabled. When HIGH, the output is in a high-impedance
state. Output Enables are separate for the three converters.
Analog Supply Voltage.
+5 Volt power inputs. These should come
from the same power source and be decoupled to A
GND
.
Digital Supply Voltage.
+5 Volt power inputs. These should come
from the same power source and be decoupled to A
GND
.
Analog Ground.
Ground connections. These pins should be
connected to the system analog ground plane.
Digital Ground.
Ground connections. These pins should be
connected to the system analog ground plane.
Pin Number
Value
Pin Function Description
4, 3, 2, 80, 79,
78, 77, 76
63, 64, 65, 66,
67, 68, 69, 70
41, 40, 39, 38,
37, 36, 35, 34
5, 62, 42
CMOS/
TTL
CMOS/
TTL
CMOS/
TTL
CMOS
DB
7-0
DC
7-0
OE
A
, OE
B
, OE
C
Power
V
DDA
V
DD
11, 47, 56
6, 7, 27, 28, 29,
30, 43, 44, 60,
61
13, 49, 54
16, 17, 18, 19,
20, 21, 22, 25,
26, 32, 33, 71,
72, 74, 75
1, 8, 10, 23, 24,
31, 46, 57, 59,
73
+5V
+5V
A
GND
D
GND
0.0V
0.0V
No Connect
N/C
open
Not Connected.
4
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
