DA9316.003
March 23, 2005
APPLICATION INFORMATION
VDD
VREF
VDD
VREF
2R
Bit 1 (MSB)
RFB
Bit 1 (MSB)
RFB
MAS 9316
Digital
Input
IO1
Bit 16 (LSB)
IO2
Digital
Input
MAS 9316
R for +/- 5V
2R for +/- 10V
ROS
ROS1
IO1
ROS2
Rb
VO1
-
+
VOUT
Bit 16 (LSB)
-
+
IO2
-
+
VOUT
MSB Latch
LSB Latch
DGND
MSB Latch
LSB Latch
DGND
UNIPOLAR OPERATION, Transfer Characteristics
BINARY INPUT
111...111
100...001
100...000
011...111
000...001
000...000
ANALOG OUTPUT
-VREF (1-2
-N
)
-VREF (1/2-2
-N
)
-VREF 1/2
-VREF (1/2-2
-N
)
-VREF (2
-N
)
0
BIPOLAR OPERATION Transfer Characteristics
OFFSET BINARY INPUT
111...111
100...001
100...000
011...111
000...001
000...000
ANALOG OUTPUT
-VREF (1-2
-(N-1)
)
-VREF (2-
-(N-1)
)
0
+VREF (2
(N-1)
)
-VREF (1-2
-(N-1)
)
+VREF
Note:
To maintain specified linearity, the external amplifier
(A) must be nulled. Apply an ‘all zeroes’ digital input and
adjust ROS for VOUT = 0 +/- 1mv.
Note:
To maintain specified linearity, the external amplifier (A1
and A2) must be nulled. With a digital input of 10...0 and
VREF set to zero:
a) set ROS1 for VO1 =0, b) set ROS2 for VOUT = 0
c) set VREF to +10v and adjust Rb for VOUT to be 0
volts.
DIGITALLY CONTROLLED LOW PASS FILTER
Bits 9-16
R3
+5v
19
R2
Register
MAS9316
5k
14
16
R4
C
R1
VIN
-
A1
+
13
16-Bit
Register Network
15
-
A2
+
-
A3
+
VOUT
+5v
20
Register
Bits 1-8
6
MAS [ MICRO ANALOG SYSTEMS ]
