PIN ASSIGNMENTS
OGND
42
OGND
40
OGND
37
OGND
35
DGND
44
AV
EE 39
AV
EE 38
AV
EE 34
AV
EE 43
I
OUT
41
PIN FUNCTIONS
I
OUT 36
NAME
D15–D0
DGND
D0 (LSB)
D1
D2
D3
D4
D5
D6
D7
DGND
AV
EE
FUNCTION
Digital Input Bits – all inputs high sends all
current to I
OUT
, none to I
OUT
Clock – latches D flip-flops
Analog Current Output
Complementary Analog Current Output
Bandgap Voltage Reference
Ref Amp’s Inverting Input
Ref Amp’s Non-Inverting Input – connection for
reference-current-setting resistor, nominally
1kΩ to ground
Bias Voltage for Output Current Switches –
drives REF
IN
(on-chip 20
Ω
resistor for
compensation)
Bias Voltage Node for Output Current Switches
– driven by AMP
OUT
Used to Decouple Ref Amp’s Circuits to AV
EE
AMP
OUT
plus on-chip 10
Ω
series resistor for
compensation
Negative Supply – –5.2 V
Digital Ground Return
Output Ground Return
Reference Amplifier Ground Return
(MSB) D15
D14
D13
D12
D11
D10
D9
D8
CLK
DGND
AV
EE
1
2
3
4
5
6
7
8
9
10
11
33
32
31
30
CLK
I
OUT
I
OUT
BG
OUT
AMP
INB
R
SET
SPT5510
44-Pin
MQFP
29
28
27
26
25
24
23
AMP
OUT
ORDERING INFORMATION
PART NUMBER
SPT5510SIM
TEMPERATURE RANGE
–40 to +85
°C
PACKAGE
44L MQFP
12
13
14
15
16
17
18
19
20
21
22
AMP
INB
AMP
CC
AMP
OUT
AV
EE
AV
EE
AMP
B
REF
IN
REFGND
REFGND
R
SET
BG
OUT
REF
IN
AMP
B
AMP
CC
AV
EE
DGND
OGND
REFGND
SPT5510
8
9/27/00
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
