DAC-HZ Series

®

®

DAC-HZ12B

DAC-HZ12D

INPUTS

(BINARY)

(BCD)

Resolution

12 binary bits

3 BCD digits

Coding, Unipolar Output

Comp. binary

Comp. BCD

Coding, Bipolar Output

Comp. off. binary

—

Input Logic Level, Bit ON ("0")

0V to +0.8V at –1mA

Input Logic Level, Bit OFF ("1")

+2.4V to +5.5V at +40

µA

Logic Loading

1 TTL load

Voltage Output Nonlinearity

±1/2LSB max.

±1/4LSB max.

Differential Nonlinearity

±3/4LSB max

±1/4LSB max.

Gain Error, Before Trimming

∗

Zero Error, Before Trimming

∗

Gain Tempco, maximum

±20ppm/°C

∗

Zero Tempco, Unipolar, max.

±3ppm/°C of FSR

∗

Offset Tempco, Bipolar, max.

±10ppm/°C of FSR

∗

Diff. Nonlinearity Tempco, max.

±2ppm/°C of FSR

∗

Monotonicity

Over oper. temp. range

∗

300ns

∗

3

∗

Slew Rate

±10V/

µs

∗

Power Supply Rejection

±0.006%FSR/%Sup.

∗

OUTPUTS

Output Current, Unipolar

0 to –2mA, ±20%

0 to –1.25mA, ±10%

Output Current, Bipolar

±1mA, ±20%

—

±2.5V

∗

2k

Ω∗

2k

Ω

—

Output Voltage Ranges, Unipolar

0 to +5V

0 to +2.5V

0 to +10V

0 to +5V

0 to +10V

Output Voltage Ranges, Bipolar

±2.5V

—

±5V

—

±10V

—

±5mA min.

∗

0.05

Ω∗

POWER REQUIREMENTS

Power Supply Voltages

+15V, ±0.5V at 16mA

–15V, ±0.5V at 20mA

Power Dissipation, maximum

500mW

PHYSICAL ENVIRONMENTAL

Operating Temp. Ranges, Case

0°C to +70° and –55°C to +125°C

Storage Temp. Range

–65°C to +150°C

Thermal Impedance

θjc

7.4°C/W

θca

36.6°C/W

Package Type

24-pin DDIP

Weight

0.22 ounces (6.3 grams)

ABSOLUTE MAXIMUM RATINGS

Positive Supply, Pin 22

+18V

Negative Supply, Pin 14

–18V

Digital Input Voltage, Pins 1–12

+5.5V

Output Current, Pin 15

±20mA

Lead Temperature (soldering, 10s)

300°C

FUNCTIONAL SPECIFICATIONS

(Typical at +25°C and ±15V supplies unless otherwise noted.)

* Specifications same as first column.

— No equivalent specifications

Footnotes

➀ FSR is full-scale range and is 10V for 0 to +10V or –5V to +5V outputs, 20V for

±10V output, etc.

➁ Initial gain and offset errors are trimmable to zero. See Connection Diagrams.

➂ Current output mode.

➃ For 2.5k

Ω or 5kΩfeedback. For 10kΩfeedback, the settling time is 4µs.

➄ For ±12V operation of binary models, contact factory.

TECHNICAL NOTES

1. The DAC-HZ12 Series converters are designed and factory

calibrated to give ±1/2LSB linearity (binary version) and

±1/4LSB linearity (BCD version) with respect to a straight

line between end points. This means that if zero and full

scale are exactly adjusted externally, the relative accuracy

will be ±1/2LSB (±1/4LSB, BCD version) everywhere over

the full output range without any additional adjustments.

2. These converters must be operated with local supply by-

pass capacitors from +15V to ground and –15V to ground.

Tantalum type capacitors of 1µF are recommended and

should be mounted as close as possible to the converter.

If the converters are used in a high-frequency noise

environment, a 0.01µF ceramic capacitor should be used

across each tantalum capacitor.

3. When operating in the current output mode, the equivalent

internal current source of 2mA (1.25mA, BCD) must drive

both the internal source resistances and the external load

resistor. A 300ns output settling time is achieved for the

voltage across a 100

Ω load resistor; for higher value

resistors the settling time becomes longer due to the output

capacitance of the converter. For fastest possible voltage

output for a large transition, an external fast-settling

amplifier such as DATEL’s AM-500 should be used in the

inverting mode. Settling time of less than 1µs can be

achieved. See application diagram.

CALIBRATION PROCEDURE

1. Select the desired output range and connect the converter

as shown in the Output Range Selection tables and the

connection diagrams.

2. To calibrate, refer to the coding tables. Note that

complementary coding is used.

3. Zero and Offset Adjustments

For unipolar operation set all digital inputs to "1" (+2.0 to

+5.5V) and adjust the ZERO ADJUST potentiometer for

zero output voltage or current. For bipolar operation set all

digital inputs to "1" and adjust the OFFSET ADJUST

potentiometer for the negative full scale (for voltage out) or

positive full scale (for current out) output value shown in the

coding table.

4. Gain Adjustment

Set all digital inputs to "0" (0V to +0.8V) and adjust the

GAIN ADJUST potentiometer for the positive full scale (for

voltage out) or negative full scale (for current out) output

value shown in the coding table.