Datasheet DAC0800LCM, DAC0800LCJ, DAC-08Q, DAC-08HQ, DAC-08HP Datasheet (NSC)

TL/H/5686

DAC0800/DAC0801/DAC0802 8-Bit Digital-to-Analog Converters

January 1995

DAC0800/DAC0801/DAC0802 8-Bit Digital-to-Analog
Converters

General Description

The DAC0800 series are monolithic 8-bit high-speed cur­rent-output digital-to-analog converters (DAC) featuring typi­cal settling times of 100 ns. When used as a multiplying
DAC, monotonic performance over a 40 to 1 reference cur­rent range is possible. The DAC0800 series also features
high compliance complementary current outputs to allow
differential output voltages of 20 Vp-p with simple resistor
loads as shown in

Figure 1

. The reference-to-full-scale cur-

rent matching of better than

g

1 LSB eliminates the need for
full-scale trims in most applications while the nonlinearities
of better than

g

0.1% over temperature minimizes system

error accumulations.

The noise immune inputs of the DAC0800 series will accept
TTL levels with the logic threshold pin, V

LC

, grounded.

Changing the V

LC

potential will allow direct interface to oth­er logic families. The performance and characteristics of the
device are essentially unchanged over the full

g

4.5V to

g

18V power supply range; power dissipation is only 33 mW

with

g

5V supplies and is independent of the logic input

states.

The DAC0800, DAC0802, DAC0800C, DAC0801C and
DAC0802C are a direct replacement for the DAC-08, DAC­08A, DAC-08C, DAC-08E and DAC-08H, respectively.

Features

Y

Fast settling output current 100 ns

Y

Full scale error

g

1 LSB

Y

Nonlinearity over temperature

g

0.1%

Y

Full scale current drift

g

10 ppm/§C

Y

High output compliance

b

10V toa18V

Y

Complementary current outputs

Y

Interface directly with TTL, CMOS, PMOS and others

Y

2 quadrant wide range multiplying capability

Y

Wide power supply range

g

4.5V tog18V

Y

Low power consumption 33 mW atg5V

Y

Low cost

Typical Applications

TL/H/5686– 1

FIGURE 1.g20 V

P-P

Output Digital-to-Analog Converter (Note 4)

Ordering Information

Non-Linearity

Temperature Order Numbers

Range

J Package (J16A)* N Package (N16A)* SO Package (M16A)

g

0.1% FS 0§CsT

A

s

a

70§C DAC0802LCJ DAC-08HQ DAC0802LCN DAC-08HP DAC0802LCM

g

0.19% FSb55§CsT

A

s

a

125§C DAC0800LJ DAC-08Q

g

0.19% FS 0§CsT

A

s

a

70§C DAC0800LCJ DAC-08EQ DAC0800LCN DAC-08EP DAC0800LCM

g

0.39% FS 0§CsT

A

s

a

70§C DAC0801LCN DAC-08CP DAC0801LCM

*Devices may be ordered by using either order number.

C

1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

Supply Voltage (V

a

b

Vb)

g

18V or 36V
Power Dissipation (Note 2) 500 mW
Reference Input Differential Voltage

(V14 to V15) V

b

to V

a

Reference Input Common-Mode Range

(V14, V15) V

b

to V

a

Reference Input Current 5 mA
Logic Inputs V

b

to Vbplus 36V

Analog Current Outputs (V

S

b

eb

15V) 4.25 mA
ESD Susceptibility (Note 3) TBD V
Storage Temperature

b

65§Ctoa150§C

Lead Temp. (Soldering, 10 seconds)

Dual-In-Line Package (plastic) 260

§

C

Dual-In-Line Package (ceramic) 300

§

C

Surface Mount Package

Vapor Phase (60 seconds) 215

§

C

Infrared (15 seconds) 220

§

C

Operating Conditions (Note 1)

Min Max Units

Temperature (T

A

)

DAC0800L

b

55

a

125

§

C

DAC0800LC 0

a

70

§

C

DAC0801LC 0

a

70

§

C

DAC0802LC 0

a

70

§

C

Electrical Characteristics The following specifications apply for V

S

e

g

15V, I

REF

e

2 mA and T

MIN

s

T

A

s

T

MAX

unless otherwise specified. Output characteristics refer to both I

OUT

and I

OUT

.

DAC0802LC

DAC0800L/

DAC0801LC

Symbol Parameter Conditions DAC0800LC Units

Min Typ Max Min Typ Max Min Typ Max

Resolution 8 8 8 8 8 8 8 8 8 Bits
Monotonicity 8 8 8 8 8 8 8 8 8 Bits
Nonlinearity

g

0.1

g

0.19

g

0.39 %FS

t

s

Settling Time Tog(/2 LSB, All Bits Switched 100 135 100 150 ns

‘‘ON’’ or ‘‘OFF’’, T

A

e

25§C
DAC0800L 100 135 ns
DAC0800LC 100 150 ns

tPLH, Propagation Delay T

A

e

25§C

tPHL Each Bit 35 60 35 60 35 60 ns

All Bits Switched 35 60 35 60 35 60 ns

TCIFSFull Scale Tempco

g10g

50

g10g

50

g10g

80 ppm/§C

V

OC

Output Voltage Compliance Full Scale Current Change

b

10 18b10 18b10 18 V

k

(/2 LSB, R

OUT

l

20 MX Typ

I

FS4

Full Scale Current V

REF

e

10.000V, R14e5.000 kX 1.984 1.992 2.000 1.94 1.99 2.04 1.94 1.99 2.04 mA

R15e5.000 kX,T

A

e

25§C

I

FSS

Full Scale Symmetry I

FS4

b

I

FS2

g

0.5g4.0

g1g

8.0

g2g

16 mA

I

ZS

Zero Scale Current 0.1 1.0 0.2 2.0 0.2 4.0 mA

I

FSR

Output Current Range V

b

eb

5V 0 2.0 2.1 0 2.0 2.1 0 2.0 2.1 mA

V

b

eb

8V tob18V 0 2.0 4.2 0 2.0 4.2 0 2.0 4.2 mA

Logic Input Levels

V

IL

Logic ‘‘0’’ V

LC

e

0V 0.8 0.8 0.8 V

V

IH

Logic ‘‘1’’ 2.0 2.0 2.0 V

Logic Input Current V

LC

e

0V

I

IL

Logic ‘‘0’’

b

10VsV

IN

s

a

0.8V

b

2.0b10

b

2.0b10

b

2.0b10 mA

I

IH

Logic ‘‘1’’ 2VsV

IN

s

a

18V 0.002 10 0.002 10 0.002 10 mA

V

IS

Logic Input Swing V

b

eb

15V

b

10 18b10 18b10 18 V

V

THR

Logic Threshold Range V

S

e

g

15V

b

10 13.5b10 13.5b10 13.5 V

I

15

Reference Bias Current

b

1.0b3.0

b

1.0b3.0

b

1.0b3.0 mA

dl/dt Reference Input Slew Rate

(Figure 12)

4.0 8.0 4.0 8.0 4.0 8.0 mA/ms

PSSI

FS

a

Power Supply Sensitivity 4.5VsV

a

s

18V 0.0001 0.01 0.0001 0.01 0.0001 0.01 %/%

PSSI

FS

b

b

4.5VsV

b

s

18V 0.0001 0.01 0.0001 0.01 0.0001 0.01 %/%

I

REF

e

1mA

Power Supply Current V

S

e

g

5V, I

REF

e

1mA

I

a

2.3 3.8 2.3 3.8 2.3 3.8 mA

I

b b

4.3b5.8

b

4.3b5.8

b

4.3b5.8 mA

V

S

e

5V,b15V, I

REF

e

2mA

I

a

2.4 3.8 2.4 3.8 2.4 3.8 mA

I

b b

6.4b7.8

b

6.4b7.8

b

6.4b7.8 mA

V

S

e

g

15V, I

REF

e

2mA

I

a

2.5 3.8 2.5 3.8 2.5 3.8 mA

I

b b

6.5b7.8

b

6.5b7.8

b

6.5b7.8 mA

2

Electrical Characteristics (Continued)

The following specifications apply for V

S

e

g

15V, I

REF

e

2 mA and T

MIN

s

T

A

s

T

MAX

unless otherwise specified. Output

characteristics refer to both I

OUT

and I

OUT

.

DAC0802LC

DAC0800L/

DAC0801LC

Symbol Parameter Conditions DAC0800LC Units

Min Typ Max Min Typ Max Min Typ Max

P

D

Power Dissipationg5V, I

REF

e

1mA 334833483348mW

5V,

b

15V, I

REF

e

2 mA 108 136 108 136 108 136 mW

g

15V, I

REF

e

2 mA 135 174 135 174 135 174 mW

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its specified operating conditions.

Note 2: The maximum junction temperature of the DAC0800, DAC0801 and DAC0802 is 125

§

C. For operating at elevated temperatures, devices in the Dual-In-Line

J package must be derated based on a thermal resistance of 100

§

C/W, junction-to-ambient, 175§C/W for the molded Dual-In-Line N package and 100§C/W for the

Small Outline M package.

Note 3: Human body model, 100 pF discharged through a 1.5 kX resistor.

Note 4: Pin-out numbers for the DAC080X represent the Dual-In-Line package. The Small Outline package pin-out differs from the Dual-In-Line package.

Connection Diagrams

Dual-In-Line Package

TL/H/5686– 13

Top View

Small Outline Package

TL/H/5686– 14

Top View

See Ordering Information

Block Diagram (Note 4)

TL/H/5686– 2

3

Typical Performance Characteristics

Full Scale Current
vs Reference Current LSB Propagation Delay Vs I

FS

Reference Input
Frequency Response

Curve 1: C

C

e

15 pF, V

IN

e

2 Vp-p

centered at 1V.

Curve 2: C

C

e

15 pF, V

IN

e

50 mVp-p

centered at 200 mV.

Curve 3: C

C

e

0 pF, V

IN

e

100 mVp-p

at 0V and applied through 50 X con-

nected to pin 14.2V applied to R14.

Reference Amp
Common-Mode Range

Logic Input Current
vs Input Voltage V

TH

b

VLCvs Temperature

Note. Positive common-mode range is
always (V

a)b

1.5V

Output Current vs Output
Voltage (Output Voltage
Compliance)

Output Voltage Compliance
vs Temperature

Bit Transfer
Characteristics

TL/H/5686– 3

Note. B1– B8 have identical transfer characteris­tics. Bits are fully switched with less than (/2 LSB
error, at less than

g

100 mV from actual thresh­old. These switching points are guaranteed to lie
between 0.8 and 2V over the operating tempera­ture range (V

LC

e

0V).

4

Typical Performance Characteristics (Continued)

Power Supply Current
vs

a

V

Power Supply Current
vsbV

Power Supply Current
vs Temperature

TL/H/5686– 4

Equivalent Circuit

TL/H/5686– 15

FIGURE 2

Typical Applications (Continued)

TL/H/5686– 5

I

FS

&

a

V

REF

R

REF

c

255

256

I

O

a

I

O

e

IFSfor all

logic states

For fixed reference, TTL operation,

typical values are:

V

REF

e

10.000V

R

REF

e

5.000k

R15&R

REF

C

C

e

0.01 mF

V

LC

e

0V (Ground)

FIGURE 3. Basic Positive Reference Operation (Note 4)

TL/H/5686– 21

TL/H/5686– 16

I

FS

&

b

V

REF

R

REF

c

255

256

Note. R

REF

sets IFS; R15 is

for bias current cancellation

FIGURE 4. Recommended Full Scale Adjustment Circuit

(Note 4)

FIGURE 5. Basic Negative Reference Operation (Note 4)

5

Typical Applications (Continued)

TL/H/5686– 17

B1 B2 B3 B4 B5 B6 B7 B8 IOmA IOmA E

O

E

O

Full Scale 1 1 1 1 1 1 1 1 1.992 0.000b9.960 0.000
Full Scale

b

LSB 1 1 1 1 1 1 1 0 1.984 0.008b9.920b0.040

Half Scale

a

LSB 1 0 0 0 0 0 0 1 1.008 0.984b5.040b4.920

Half Scale 1 0 0 0 0 0 0 0 1.000 0.992b5.000b4.960
Half Scale

b

LSB 0 1 1 1 1 1 1 1 0.992 1.000b4.960b5.000

Zero Scale

a

LSB 0 0 0 0 0 0 0 1 0.008 1.984b0.040b9.920

Zero Scale 0 0 0 0 0 0 0 0 0.000 1.992 0.000

b

9.960

FIGURE 6. Basic Unipolar Negative Operation (Note 4)

TL/H/5686– 6

B1 B2 B3 B4 B5 B6 B7 B8 E

O

E

O

Pos. Full Scale 1 1 111111b9.920a10.000
Pos. Full Scale

b

LSB11111110b9.840a9.920

Zero Scale

a

LSB 10000001b0.080a0.160

Zero Scale 1 0 000000 0.000

a

0.080

Zero Scale

b

LSB 01111111a0.080 0.000

Neg. Full Scale

a

LSB00000001a9.920b9.840

Neg. Full Scale 0 0 000000

a

10.000b9.920

FIGURE 7. Basic Bipolar Output Operation (Note 4)

TL/H/5686– 18

If R

L

e

RLwithing0.05%, output is symmetrical about ground

B1 B2 B3 B4 B5 B6 B7 B8 E

O

Pos. Full Scale 1 1 1 1 1 1 1 1a9.960
Pos. Full Scale

b

LSB11111110a9.880

(

a

)Zero Scale 1 0 0 0 0 0 0 0a0.040

(

b

)Zero Scale 0 1 1 1 1 1 1 1b0.040

Neg. Full Scale

a

LSB00000001b9.880

Neg. Full Scale 0 0 0 0 0 0 0 0

b

9.960

FIGURE 8. Symmetrical Offset Binary Operation (Note 4)

6

Typical Applications (Continued)

TL/H/5686– 19

For complementary output (operation as negative logic DAC), connect invert­ing input of op amp to I

O

(pin 2), connect IO(pin 4) to ground.

FIGURE 9. Positive Low Impedance Output Operation (Note 4)

TL/H/5686– 20

For complementary output (operation as a negative logic DAC) connect non-in­verting input of op am to I

O

(pin 2); connect IO(pin 4) to ground.

FIGURE 10. Negative Low Impedance Output Operation (Note 4)

V

TH

e

V

LC

a

1.4V

15V CMOS, HTL, HNIL

V

TH

e

7.6V

TL/H/5686– 9

Note. Do not exceed negative logic input range of DAC.

TL/H/5686– 10

Typical values: R

IN

e

5k,aV

IN

e

10V

FIGURE 11. Interfacing with Various Logic Families FIGURE 12. Pulsed Reference Operation (Note 4)

7

Typical Applications (Continued)

(a) I

REF

t

peak negative swing of I

IN

TL/H/5686– 11

(b)aV

REF

must be above peak positive swing of V

IN

TL/H/5686– 12

FIGURE 13. Accommodating Bipolar References (Note 4)

TL/H/5686– 7

FIGURE 14. Settling Time Measurement (Note 4)

8

Typical Applications (Continued)

Note. For 1 ms conversion time with 8-bit resolution and 7-bit accuracy, an
LM361 comparator replaces the LM319 and the reference current is doubled
by reducing R1, R2 and R3 to 2.5 k X and R4 to 2 MX.

TL/H/5686– 8

FIGURE 15. A Complete 2 ms Conversion Time, 8-Bit A/D Converter (Note 4)

Physical Dimensions inches (millimeters)

Molded Dual-In-Line Package

Order Numbers DAC0800 or DAC0802

NS Package Number J16A

9

DAC0800/DAC0801/DAC0802 8-Bit Digital-to-Analog Converters

Physical Dimensions inches (millimeters) (Continued)

Molded Small Outline Package (SO)

Order Numbers DAC0800LCM,

DAC0801LCM or DAC0802LCM

NS Package Number M16A

Molded Dual-In-Line Package

Order Numbers DAC0800, DAC0801, DAC0802

NS Package Number N16A

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