MC1408P8 National Semiconductor, MC1408P8 Datasheet

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MC1408P8

Manufacturer Part Number
MC1408P8
Description
National Semiconductor [8-Bit D/A Converter]
Manufacturer
National Semiconductor
Datasheet

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© 2001 National Semiconductor Corporation
DAC0808
8-Bit D/A Converter
General Description
The DAC0808 is an 8-bit monolithic digital-to-analog con-
verter (DAC) featuring a full scale output current settling time
of 150 ns while dissipating only 33 mW with
No reference current (I
applications since the full scale output current is typically
LSB of 255 I
±
level output current of less than 4 µA provides 8-bit zero
accuracy for I
DAC0808 is independent of bit codes, and exhibits essen-
tially constant device characteristics over 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.
Block and Connection Diagrams
0.19% assure 8-bit monotonicity and linearity while zero
REF
REF
/256. Relative accuracies of better than
2 mA. The power supply currents of the
REF
) trimming is required for most
DS005687
±
See NS Package M16A or N16A
5V supplies.
Dual-In-Line Package
Order Number DAC0808
±
1
Top View
Features
n Relative accuracy:
n Full scale current match:
n Fast settling time: 150 ns typ
n Noninverting digital inputs are TTL and CMOS
n High speed multiplying input slew rate: 8 mA/µs
n Power supply voltage range:
n Low power consumption: 33 mW
compatible
DS005687-2
DS005687-1
±
0.19% error maximum
±
1 LSB typ
±
4.5V to
@
±
5V
±
18V
www.national.com
May 1999

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MC1408P8 Summary of contents

Page 1

... 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. Block and Connection Diagrams © 2001 National Semiconductor Corporation Features n Relative accuracy: n Full scale current match: ± ...

Page 2

... Block and Connection Diagrams Ordering Information ACCURACY OPERATING TEMPERATURE RANGE 8-bit 0˚ Note 1: Devices may be ordered by using either order number. www.national.com (Continued) Small-Outline Package DS005687-13 N PACKAGE (N16A) (Note 1) +75˚C DAC0808LCN 2 SO PACKAGE (M16A) MC1408P8 DAC0808LCM ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage Digital Input Voltage, V5–V12 Applied Output Voltage Reference Current Reference Amplifier Inputs, V14, V15 Power Dissipation (Note 4) ESD Susceptibility (Note 5) ...

Page 4

Electrical Characteristics ( − /R14 = 2 mA, and all digital inputs at high logic level unless otherwise noted REF Symbol Parameter All Bits Low All Bits High Note 2: ...

Page 5

Typical Performance Characteristics noted (Continued) Output Current vs Output Voltage (Output Voltage Compliance) DS005687-17 Typical Power Supply Current DS005687-20 Unless otherwise specified: R14 = R15 = pF, pin ...

Page 6

www.national.com 6 ...

Page 7

Test Circuits V and I apply to inputs A1–A8 The resistor tied to pin temperature compensate the bias current and may not be necessary for all applications. and A = “1” ...

Page 8

Test Circuits (Continued) FIGURE 5. Transient Response and Settling Time (Note 8) FIGURE 6. Reference Current Slew Rate Measurement (Note 8) www.national.com DS005687-10 FIGURE 7. Positive V (Note 8) REF 8 DS005687-8 DS005687-9 ...

Page 9

Test Circuits (Continued) Application Hints REFERENCE AMPLIFIER DRIVE AND COMPENSATION The reference amplifier provides a voltage at pin 14 for converting the reference voltage to a current, and a turn-around circuit or current mirror for feeding the ladder. The reference ...

Page 10

Application Hints (Continued) advantage of this method. Compensation involves a capaci- tor pin 16, using the values of the previous EE paragraph. The negative reference voltage must be at least 4V above the V supply. Bipolar input ...

Page 11

Physical Dimensions inches (millimeters) unless otherwise noted Small Outline Package Order Number DAC0808LCM NS Package Number M16A Dual-In-Line Package Order Number DAC0808 NS Package Number N16A 11 www.national.com ...

Page 12

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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