HDH-1003| Datasheet

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HDS-0820, -1025,-1250jHDH-0802, -1003,-12051
FEATURES 25ns Current Settling to 0.1% (HDS) 2oons Voltage Settling to 0.1% (HDH) 10mA Current Out (HDS) Guaranteed Monotonicitv' Over Temperature No External Parts Required Reliable Hybrid Construction HDS-oS20, HDS-IO2S FUNCTIONAL BLOCK DIAGRAM
MSB dlT 1

I I
DIGITAL INPUTS

I I I I I
BIT10 LSB

INPUT BUF-fER LOGIC DTLITTL COMP

ELEC. ' TRONIC SWITCHES

PRE. CISION RESISTOR NETWORK

RL CURRENT OUTPUT BIPOLAR OFFSET

+15V -15V

OBS

APPLICATIONS CRT Vector Displays TV Video Reconstruction Analytical and Medical Instruments

HDS.0820,
NOTE,

1025

ON 8.BIT VERSIONS, PINS 11 AND 12 ARE NOT CONNECTED INTERNALL Y, AND PIN 10 IS LSB.

HDS-12S0 FUNCTIONAL BLOCK DIAGRAM

GENERAL DESCRIPTION The HDS/HDH series of digital-to-analog converters are among the fastest precision settling current and voltage DACs available. They can be processed to guarantee monotonic over their operating temperatUre range. The current output models provide 10mA full scale allowing direct drive of capacitive loads and transmission lines. All versions have a precision reference and are active laser trimmed to specified accuracy, S9 no external adjustment pots or other components are required. With six units available, engineering trade-offs can be made among resolution, speed, current or voltage output, and price. To facilitate this comparison major specifications are summarized in Table I. Other general specifications that apply to all devices include TTL logic; ceramic or hermetic metal package; unipolar or bipolar operation with internal offsetting reference. The HDH voltage output devices provide access to the op amp summing point so that reduced full-scale output voltage swing can be provided. O
peration with an external resistor shunting the internal1k resistor will reduce the already low op amp offset drift.

OLE
DIGITAL INPUTS INPUT BUFFER LOGIC DTLITTL COMP

ELEC. TRONIC SWITCHES

HDS-1250

HDH-oSO2, HDH-IOO3 AND HDH-120S FUNCTIONAL BLOCK DIAGRAM;-

MSB BIT 1

TE
+15V 22

PRE. CISION RESISTOR NETWORK

II

-

BIPOLAR OFFSET SUM MODE

I I
DIGITAL INPUTS

20 ELECTRONIC CURRENT SWITCHES

I I I I I I
BIT 12 LSB

INPUT BUFFER TTLIDTL

~
13.19

OUTPUT GND

-15V

+15V

NOTE, ON HDH-0802 DEVICES, GROUND PINS 8. 10. 11 AND 12. ON HDH.I003 DEVICES. GROUND PINS 11 AND 12,

Model Current Output. HDS-oS20 HDS-I02S HDS-12S0 Voltage Output HDH-oS02 HDH.I003 HDH-120S

Resolution 8 Bits 10 Bits 12 Bits 8 Bits 10 Bits 12 Bits Table I

Full Scale Step Setding Time 10mA Step

20ns to 0.4% .
2Sns to 0.1% 3Sns to 0.02S% 10V Step 200ns to 0.4% 300ns to O.l%. SOOns to 0.12S%

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HDH-1003 DATASHEET