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SP9316B-4 Datasheet(PDF) 4 Page - Sipex Corporation

Part # SP9316B-4
Description  16-Bit CMOS Multiplying DAC
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP9316B-4 Datasheet(HTML) 4 Page - Sipex Corporation

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SIGNAL PROCESSING EXCELLENCE
184
USING THE SP9316
General Configuration
The SP9316 can be configured for unipolar
voltage operation (2-quadrant multiplication)
or bipolar voltage operation (4-quadrant multi-
plication.) Coding is binary and offset binary
respectively. In bipolar operation both the ref-
erence signal and the number represented by the
digital input applied to the SP9316 may be of
either positive or negative polarity.
Pin 20 — MSB LATCH — MSB Latch control.
Level–triggered. Logic 0 strobes data into latch;
logic 1 allows data to update DAC directly.
Pin 21 — DB
16 — Data Bit 16 (LSB) .
Pin 22 — DB
15 — Data Bit 15.
Pin 23 — DB
14 — Data Bit 14.
Pin 24 — DB
13 — Data Bit 13.
PIN ASSIGNMENTS
Pin 1 — DB
12 — Data Bit 12.
Pin 2 — DB
11 — Data Bit 11.
Pin 3 — DB
10 — Data Bit 10.
Pin 4 — DB
9 — Data Bit 9.
Pin 5 — DB
8 — Data Bit 8.
Pin 6 — DB
7 — Data Bit 7.
Pin 7 — DB
6 — Data Bit 6.
Pin 8 — DB
5 — Data Bit 5.
Pin 9 — DB
4 — Data Bit 4.
Pin 10 — DB
3 — Data Bit 3.
Pin 11 — DB
2 — Data Bit 2.
Pin 12 — DB
1 — Data Bit 1 (MSB).
Pin 13 — V
REF In — Voltage Reference Input.
Pin 14 — R
FB — Feedback Resistor.
Pin 15 — I
OUT2 — Current Output.
Pin 16 — I
OUT1 — Inverted Current Output.
Pin 17 — VDD — +15V Power Supply.
Pin 18 — GND — Analog GND.
Pin 19 — LSB LATCH — LSB Latch control.
Level–triggered. Data is latched with strobe at
logic 0; logic 1 allows data to update DAC
directly.
FEATURES…
The SP9316 is a 16-bit, monolithic CMOS,
multiplying digital-to-analog converter with two
8-bit input registers for direct microprocessor
interface. It offers two– and four–quadrant mul-
tiplying capability with TTL/DTL and CMOS
logic compatibility. It is ideally suited for Auto-
mated Test Equipment, medical instrumenta-
tion and high–energy physics applications. Op-
erating from a single +15V supply, power dissi-
pation is less than 60mW. High accuracy and
monotonicity are achieved without laser–trim-
ming through the use of a highly accurate, low–
TCR thin–film resistor process. A unique digital
decoding technique of the 4 MSB’s results in
excellent linearity and stability over both time
and temperature. The SP9316 is packaged in
hermetic 24-pin ceramic or molded plastic.
Models are available for operation over the
commercial (0
°C to 70°C) and military (–55°C
to +125
°C) temperature ranges. For product
screened to MIL–STD–883, please consult the
factory.
Figure 1. Unipolar Operation
VREF
BIT 1 (MSB)
MSB LATCH
LSB LATCH
_
+
A
SP9316
400Ω
DIGITAL
INPUT
+15V
IOUT1
IOUT2
ROS
VOUT
All "ones":
VOUT = –VREF + 1LSB
0.01µF
1µF
+
17
18
13
14
RFB
16
15
BIT 16 (LSB)
GND
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.


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