®
®
DAC-HZ Series
12-Bit, Industry-Standard
Digital-to-Analog Converters
INNOVATION and EXCELLENCE
FEATURES
•
12-Bit binary and 3-digit BCD models
•
7 Output ranges
•
3µs V
OUT
settling time
300ns I
OUT
settling time
•
Guaranteed monotonicity over full temperature range
•
Integral nonlinearity ±1/2LSB (binary) and ±1/4LSB
(BCD), maximum
•
Differential nonlinearity ±3/4LSB (binary) and ±1/4LSB
(BCD), maximum
•
High-reliability QL versions available
GENERAL DESCRIPTION
The DAC-HZ Series are high-performance, monolithic, 12-bit
binary and 3-digit BCD, digital-to-analog converters. The
DAC-HZ Series are complete and self-contained with a
precision internal reference and fast output operational
amplifier. Pin programmable output voltage and current
ranges are provided for a high degree of application flexibility;
the binary versions offer 5 output voltage ranges and two
current ranges while the BCD models offer 3 and 1 output
ranges, respectively.
The DAC-HZ Series contains a precision embedded Zener
reference circuit. This eliminates code-dependent ground
currents by routing current from the positive supply to the
internal ground node as determined by the R-2R ladder
network. The internal feedback resistors for the on-board
amplifier track the ladder network resistors, enhancing
temperature performance. The excellent tracking of the
resistors results in temperature coefficients for differential
nonlinearity, zero and gain of ±2, ±3 and ±20ppm/°C
maximum, respectively.
INPUT/OUTPUT CONNECTIONS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
FUNCTION
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12 (LSB)
PIN
24
23
22
21
20
19
18
17
16
15
14
13
FUNCTION
REFERENCE OUT
GAIN ADJUST
+15V SUPPLY
GROUND
CURRENT OUTPUT
20V RANGE
10V RANGE
BIPOLAR OFFSET
REFERENCE IN
VOLTAGE OUTPUT
–15V SUPPLY
NO CONNECTION
1
2
4
8
10
20
40
80
100
200
400
800
BITS BCD
BITS BINARY
MSB 1 2 3 4 5 6 7 8 9 10 11 12 LSB
1 2 3 4 5 6 7 8 9 10 11 12
5kW
19 20V RANGE
(4kW , BCD)
5kW
D/A CONVERTER
(4kW , BCD)
18 10V RANGE
REFERENCE IN 16
6.3k
W
*
BIPOLAR OFFSET 17
*
FOR BCD MODELS,
THIS RESISTOR IS
OPEN CIRCUIT.
20 CURRENT OUTPUT
15 VOLTAGE OUTPUT
GAIN ADJUST 23
+6.3V
REFERENCE
21 GROUND
REFERENCE OUT 24
22
+15V
SUPPLY
14
–15V
SUPPLY
13
NO INTERNAL
CONNECTION
Figure 1. Functional Block Diagram
MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
