API DAC337 Adjustment-free 8-bit dac Datasheet

D AC337
D ata Converter Line
Adjustment-Free 8-Bit D ACs
FEATURES
•
•
•
•
No Zero Or Gain A djusts
t/aLSB Linearity
Internal Reference and Output A mplifier
Low Power
DESCRIPTION
The DA C337 Series digital-to-analog converters are
designed for completely adjustment-free operation.
The word “ simplicity” best characterizes the DA C337
Series. A ll models are housed in hermetically sealed
DIP style packages and operate on ±15V power
supplies. Each model incorporates a precision
reference, highly stable thin-film nichrome resistor
network, output amplifier, and switches. ±1/2 LSB
li nearity is achieved without the use of external zero
and gain adjustment circuits.
Four output voltage ranges are offered — 0 to +10,
0 to –10 (unipolar) and ±5, ±10 (bipolar).
Spectrum Microwave offers the DAC337 for industrial and
commercial applications.
FUNCTIONAL DIAGRAM
GND
– 15V
6(7)
GND
7(8)
+15V
8(9)
9(10)
GND
10(11)
–
+
INTERNA L
REF
RESISTOR NETW ORK
5 (6)
–
SW ITCHES
+
1
2
3
4
11
12
13
14
NC M EA NS NO CONNECTION
BIT 1 2
M SB
3
4
5
6
V OLTA GE OUTPUT
7
8
165Cedar Hill Street,Marlborough,MA01752 Tel:508.485.6350 Fax: 508.485.5168
www.SpectrumMicrowave.com
BIPOLA R ONLY
PIN OUTS
n - DA C337-0, -1, -2, -6
DAC337
SPECIFICATIO N S
(Typical for all models @ +25º C and nominal power supplies unless otherwise noted)
SERIES
DA C337
TY PE
Fixed Ref., V olt, Output
DA C337 -0, -1, -2, -6
0.475 M A X
(12.065)
DIGITA L INPUT
Resolution
Coding
DA C337-0
DA C337-1,6
DA C337-2
Logic Compatibility
V IH = 2.4V typ., 3.5V min.
V IH = 0.8V max.
8 Bits
Complementary Binary
Offset Binary
Binary
TTL, DTL, CM OS (from 5V supply)
0.010 ±0.002
(0.457 ±0.050)
0.300
(7.620)
0.10
(2.54)
RED DOT
INDICA TES PIN 1
REFERENCE
0.155 M A X
(3.937)
0.100 TY P
(2.540)
0 to –10V @ –5mA
+5V +5mA
0 to +10V @ +5mA
±10V @ +5mA
<0.1
APPLICATIO N IN FO RMATIO N
Internal
RECOM M ENDED POW ER SUPPLY BY -PA SS CIRCUIT
TOP V IEW
STA TIC PERFORM A NCE
Integral Linearity
Differential Linearity
0.220 M IN
(5.588)
0.800 M A X
(20.320)
A NA LOG OUTPUT
V oltage
DA C337-0
DA C337-1
DA C337-2
DA C337-6
Impedance
DIM ENSIONS
INCHES
(mm)
+15
±1/2 LSB, max.
±1/2 LSB, typ.; ±1 LSB.max.
+
1µF
0.10
(2.54)
COM
+
0.01µF
1µF
– 15
0.01µF
DY NA M IC PERFORM A NCE
Settling Time to 1/2 LSB for Full Scale Change
DA C337–0,–1,–2
20µs
DA C337-6
40µs
For 1 LSB change
5µs typ.; 10µs max
Slew Rate
0.5V /µs
STA BILITY (T M IN TO T M A X )
A ccuracy
Linearity
Offset
1LSB
±1/1 LSB, max.
±1 LSB, max.
POW ER SUPPLY
V oltage @ Current
Power Supply Rejection Ratio
+15V ±20% @ +6mA , max.
–15V ±20% @ –13mA , max.
+15V Supply, 0.1% FSR/V oIt
–15V Supply, 0.2% FSR/V oIt
TEM PERA TURE RA NGE
Operating
Storage
0ºC to +70ºC
–65ºC to +150ºC
M ECHA NICA L
Case Style
M etal or ceramic at
manufacturer's option
PIN
1
2
3
4
5
6
7
FUNCTION
BIT1 (M SB)
BIT 2
BIT 3
BIT 4
OUTPUT
GND
-15V
PIN
14
13
12
11
10
9
8
FUNCTION
BIT 8 (LSB)
BIT 7
BIT 6
BIT 5
N.C.
+15V
GND
PIN 9
PIN 10
PIN 6,8
PIN 7,9
PIN 7 (8BIT)
PIN 8 (10 BIT)
TRA NSFER CHA RA CTERISTICS
DA C337
INPUT PINS
11111111
10000000
11111111
11111111
1111111111
1000000000
0 111111111
0000000000
337 – 0
0V
– 4.961V
– 5V
– 9.961V
–1
+5V
+0.040V
0
– 4.961V
TRA NSFER CHA RA CTERISTICS
A NA LOG OUTPUT
–2
–6
– 9.961V
+10V
+5V
+0.080V
+4.961V
0V
0V
– 9.921V
0V
+5V
– 4.961V
+0.010V
5V
0V
– 9.990V
– 4.990V
+9.990V
+5V
+4.990V
0V
+10V
+0.020V
0V
– 9.980V
CA UTION: ESD (Electro-Static Discharge) sensitive device.
Permanent damage may occur when unconnected devices are
subjected to high energy electrostatic fields. Unused devices must
be stored in conductive foam or shunts. Protective foam should be
discharged to the destination socket before devices are removed.
Devices should be-handled at static safe workstations only. Unused
digital inputs must be grounded or tied to the logic supply voltage.
Unless otherwise noted, the supply voltage at any digital input
should never exceed the supply voltage by more than 0.5 volts or
go betow –0.5 volts. If this condition cannot be maintained, limit
input current on digital inputs by using series resistors or contact
SatCon for technical assistance.
Specifications subject to change without notice.
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