Electronica

DAC0808

DAC0808 8-Bit D/A Converter

Literature Number: SNAS539A

DAC0808 8-Bit D/A Converter

May 1999

DAC0808 8-Bit D/A Converter
General Description
The DAC0808 is an 8-bit monolithic digital-to-analog converter (DAC) featuring a full scale output current settling time of 150 ns while dissipating only 33 mW with ± 5V supplies. No reference current (IREF) trimming is required formost applications since the full scale output current is typically ± 1 LSB of 255 IREF/256. Relative accuracies of better than ± 0.19% assure 8-bit monotonicity and linearity while zero level output current of less than 4 µA provides 8-bit zero accuracy for IREF≥2 mA. The power supply currents of the DAC0808 is independent of bit codes, and exhibits essentially constant device characteristicsover the entire supply voltage range. The DAC0808 will interface directly with popular TTL, DTL or CMOS logic levels, and is a direct replacement for the MC1508/MC1408. For higher speed applications, see DAC0800 data sheet.

Features
n n n n Relative accuracy: ± 0.19% error maximum Full scale current match: ± 1 LSB typ Fast settling time: 150 ns typ Noninverting digital inputs are TTL and CMOScompatible n High speed multiplying input slew rate: 8 mA/µs n Power supply voltage range: ± 4.5V to ± 18V n Low power consumption: 33 mW @ ± 5V

Block and Connection Diagrams

DS005687-1

Dual-In-Line Package

DS005687-2

Top View Order Number DAC0808 See NS Package M16A or N16A

© 2001 National Semiconductor Corporation

DS005687

www.national.com

DAC0808

Block and ConnectionDiagrams

(Continued)

Small-Outline Package

DS005687-13

Ordering Information
ACCURACY OPERATING TEMPERATURE RANGE 8-bit 0˚C≤TA≤+75˚C N PACKAGE (N16A) (Note 1) DAC0808LCN MC1408P8 SO PACKAGE (M16A) DAC0808LCM

Note 1: Devices may be ordered by using either order number.

www.national.com

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DAC0808

Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devicesare required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage VCC VEE Digital Input Voltage, V5–V12 Applied Output Voltage, VO Reference Current, I14 Reference Amplifier Inputs, V14, V15 Power Dissipation (Note 4) ESD Susceptibility (Note 5) +18 VDC −18 VDC to +18 VDC to +18 VDC 5 mA VCC, VEE 1000 mW TBD

StorageTemperature Range Lead Temp. (Soldering, 10 seconds) Dual-In-Line Package (Plastic) Dual-In-Line Package (Ceramic) Surface Mount Package Vapor Phase (60 seconds) Infrared (15 seconds)

−65˚C to +150˚C 260˚C 300˚C 215˚C 220˚C

−10 VDC −11 VDC

Operating Ratings
Temperature Range DAC0808 TMIN ≤ TA ≤ TMAX 0 ≤TA ≤ +75˚C

Electrical Characteristics
(VCC = 5V, VEE = −15 VDC, VREF/R14 = 2 mA, andall digital inputs at high logic level unless otherwise noted.) Symbol Er Parameter Relative Accuracy (Error Relative to Full Scale IO) DAC0808LC (LM1408-8) Settling Time to Within ⁄ LSB
12

Conditions (Figure 4)

Min

Typ

Max

Units %

± 0.19
TA =25˚C (Note 7), (Figure 5) TA = 25˚C, (Figure 5) (Figure 3) 2 0.8 (Figure 3) VIH = 5V VIL = 0.8V (Figure 3) (Figure 3) VEE = −5V VEE =−15V, TA = 25˚C 0 0 2.0 2.0 2.1 4.2 0 −0.003 −1 0.040 −0.8 −3 30 100 150

% ns ns ppm/˚C VDC VDC mA mA µA mA mA

(Includes tPLH) tPLH, tPHL TCIO MSB VIH VIL MSB Propagation Delay Time Output Full Scale Current Drift Digital Input Logic Levels High Level, Logic “1” Low Level, Logic “0” Digital Input Current High Level Low Level I15 Reference Input Bias Current Output Current Range

± 20

IOOutput Current

VREF = 2.000V, R14 = 1000Ω, (Figure 3) 1.9 1.99 0 2.1 4 −0.55, +0.4 −5.0, +0.4 (Figure 6) −5V ≤ VEE ≤ −16.5V (Figure 3) 2.3 −4.3 22 −13 5.5 −16.5 mA mA VDC VDC 4 8 0.05 2.7 mA µA VDC VDC mA/µs µA/V

Output Current, All Bits Low Output Voltage Compliance (Note 3) VEE =−5V, IREF =1 mA VEE Below −10V SRIREF Reference Current Slew Rate Output Current Power Supply Sensitivity...