
DAC-HZ S eries
12-Bit, Industry-Standard
Digital-to-Analog Converters
INNOVATION and EX C ELL E N C E
Figure 1. Functional Block Diagram
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
PIN
FUNCTION
PIN
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
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)
24
23
22
21
20
19
18
17
16
15
14
13
REFERENCE OUT
GAIN ADJUST
+15V SUPPLY
GROUND
CURRENT OUTPUT
20V RANGE
10V RANGE
BIPOLAR OFFSET
REFERENCE IN
VOLTAGE OUTPUT
–15V SUPPLY
NO CONNECTION
INPUT/OUTPUT CONNECTIONS
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.
MSB
BITS BCD
BITS BINARY
6.3k
LSB
1 2 3 4
REFERENCE OUT 24
GAIN ADJUST 23
BIPOLAR OFFSET
18
+15V
SUPPLY
22
20
19
17
21
5 6 7 8 9 10 11 12
D/A CONVERTER
GROUND
20V RANGE
–15V
SUPPLY
+6.3V
REFERENCE
1 2 3 4 5 6 7 8 9 10 11 12
1
2
4
8
1
2
4
8
1
2
4
8
5k
5k
(4k , BCD)
15
16
REFERENCE IN
10V RANGE
CURRENT OUTPUT
VOLTAGE OUTPUT
NO INTERNAL
CONNECTION
14
13
*
*
FOR BCD MODELS,
THIS RESISTOR IS
OPEN CIRCUIT.
(4k , BCD)