ANALOG DEVICES DAC08 Service Manual

8-Bit, High Speed, Multiplying D/A Converter

FEATURES

Fast settling output current: 85 ns
Full-scale current prematched to ±1 LSB
Direct interface to TTL, CMOS, ECL, HTL, PMOS
Nonlinearity to 0.1% maximum over temperature range
High output impedance and compliance: −10 V to +18 V
Complementary current outputs
Wide range multiplying capability: 1 MHz bandwidth
Low FS current drift: ±10 ppm/°C
Wide power supply range: ±4.5 V to ±18 V
Low power consumption: 33 mW @ ±5 V
Low cost

GENERAL DESCRIPTION

The DAC08 series of 8-bit monolithic digital-to-analog convert­ers provide very high speed performance coupled with low cost
and outstanding applications flexibility.

Advanced circuit design achieves 85 ns settling times with very
low “glitch” energy and at low power consumption. Monotonic
multiplying performance is attained over a wide 20-to-1
reference current range. Matching to within 1 LSB between
reference and full-scale currents eliminates the need for full-

(Universal Digital Logic Interface)

DAC08

scale trimming in most applications. Direct interface to all
popular logic families with full noise immunity is provided by
the high swing, adjustable threshold logic input.

High voltage compliance complementary current outputs are
provided, increasing versatility and enabling differential
operation to effectively double the peak-to-peak output swing.
In many applications, the outputs can be directly converted to
voltage without the need for an external op amp. All DAC08
series models guarantee full 8-bit monotonicity, and nonlineari­ties as tight as ±0.1% over the entire operating temperature
range are available. Device performance is essentially unchanged
over the ±4.5 V to ±18 V power supply range, with 33 mW
power consumption attainable at ±5 V supplies.

The compact size and low power consumption make the DAC08
attractive for portable and military/aerospace applications;
devices processed to MIL-STD-883, Level B are available.

DAC08 applications include 8-bit, 1 µs A/D converters, servo
motor and pen drivers, waveform generators, audio encoders
and attenuators, analog meter drivers, programmable power
supplies, LCD display drivers, high speed modems, and other
applications where low cost, high speed, and complete
input/output versatility are required.

FUNCTIONAL BLOCK DIAGRAM

V+ V

13 1 5 6 7 8 9 10 11 12

DAC08

BIAS
NETWORK

14

V

(+)

REF

15

V

(–)

REF

REFERENCE

AMPLIFIER

Rev. C

Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.

LC

CURRENT

SWITCHES

(MSB)

B1

V–COMP

B2 B3 B4 B5 B6 B7

316

Figure 1.

(LSB)

B8

I

OUT

4
2

I

OUT

00268-C-001

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
Fax: [phone] © 2004 Analog Devices, Inc. All rights reserved.

www.analog.com

DAC08

TABLE OF CONTENTS

Specifications..................................................................................... 3

Electrical Characteristics............................................................. 3

Typical E l e ctric a l Characte r i s tics ............................................... 4

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Pin Connections ............................................................................... 6

Test and Burn-In Circuits................................................................ 7

Typical Performance Characteristics ............................................. 8

Basic Connections.......................................................................... 11

Application Information................................................................ 13

Reference Amplifier Setup ........................................................ 13

Reference Amplifier Compensation for Multiplying
Applications

Logic Inputs................................................................................. 13

Analog Output Currents ........................................................... 14

Power Supplies ............................................................................ 14

Temperature Performance......................................................... 14

Multiplying Operation............................................................... 14

Settling Time............................................................................... 14

ADI Current Output DACs........................................................... 16

Outline Dimensions ....................................................................... 17

Ordering Guide .......................................................................... 18

................................................................................ 13

REVISION HISTORY

11/04—Rev. B to Rev. C

Changed SO to SOIC .........................................................Universal

Removed DIE......................................................................Universal

Changes to Figure 30, Figure 31, Figure 32................................. 12

Change to Figure 33 ....................................................................... 15

Added Table 4.................................................................................. 16

Updated Outline Dimensions....................................................... 17

Changes to Ordering Guide.......................................................... 18

2/02—Rev. A to Rev. B

Edits to SPECIFICATIONS............................................................. 2

Edits to ABSOLUTE MAXIMUM RATING ................................ 3

Edits to ORDERING GUIDE.......................................................... 3

Edits to WAFER TEST LIMITS...................................................... 5

Edit to Figure 13 ............................................................................... 8

Edits to Figures 14 and 15 ............................................................... 9

Rev. C | Page 2 of 20

DAC08

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

VS = ±15 V, I
DAC08C, unless otherwise noted. Output characteristics refer to both I

Table 1.

DAC08A/DAC08H DAC08E DAC08C
Parameter

Resolution 8 8 8 Bits
Monotonicity 8 8 8 Bits
Nonlinearity NL ±0.1 ±0.19 ±0.39 %FS
Settling Time t

Propagation Delay

Each Bit t

All Bits Switched t
Full-Scale Tempco1 TCI
DAC08E ±50
Output Voltage

Compliance V

(True Compliance) Change <1/2 LSB, R

Full Range Current I

Full Range Symmetry I
Zero-Scale Current I
Output Current

Range
I

V
V− = −12 V
Output Current

Noise
Logic Input Levels

Logic 0 V

Logic 1 V
Logic Input Current VLC = 0 V

Logic 0 I

Logic 1 I
Logic Input Swing V
Logic Threshold

Range
Reference Bias

Current
Reference Input dI/dt REQ = 200 Ω 4 8 4 8 4 8 mA/µs

Slew Rate RL = 100 Ω
C
Power Supply

Sensitivity
PSSI
I

= 2.0 mA, –55°C ≤ TA ≤ +125°C for DAC08/DAC08A, 0°C ≤ TA ≤ +70°C for DAC08E and DAC08H, −40°C to +85°C for

REF

I

OUT

Symbol

S

PLH

PHL

FS

OC

and

OUT

Conditions Min Typ Max Min Typ Max Min Typ Max Unit

To ±1/2 LSB, all bits
switched on or off,

1

= 25°C

T

A

85 135 85 150 85 150 ns

TA = 25°C1 35 60 35 60 35 60 ns
35 60 35 60 35 60 ns
±10 ±50 ±10 ±80 ±10 ±80 ppm/°C

Full-scale current

>

OUT

−10 +18 −10 +18 –10 +18 V

.

20 MΩ typ
V

FR4

FRS

ZS

I

OR1

OR2

= 10.000 V R14, R15 =

REF

5.000 kΩ T
I

FR4

− I

= 25°C

A

FR2

0.1 1 0.2 2 0.2 4 µA
R14, R15 = 5.000 kΩ 2.1 2.1 2.1 mA

V

= +15.0 V,

REF

1.984 1.992 2.000 1.94 1.99 2.04 1.94 1.99 2.04 mA

±0.5 ±4 ±1 ±8 ±2 ±16 µA

V− = −10 V

= +25.0 V, 4.2 4.2 4.2 mA

REF

I

IL

IL

IL

IH

IS

V

THR

I

15

PSSI

FS+

FS–

= 2 mA 25 25 25 nA

REF

VLC = 0 V 0.8 0.8 0.8 V
2 2 2 V

VIN = −10 V to +0.8 V −2 −10 −2 −10 −2 −10 µA
VIN = 2.0 V to 18 V 0.002 10 0.002 10 0.002 10 µA
V− = −15 V −10 +18 −10 +18 −10 +18 V
VS = ±15 V1 −10 +13.5 −10 +13.5 −10 +13.5 V

−1 −3 −1 −3 −1 −3 µA

= 0 pF. See Figure 7.

C

1

V+ = 4.5 V to 18 V ±0.0003 ±0.01 ±0.0003 ±0.01 ±0.0003 ±0.01 %∆IO/%∆V+

V− = −4.5 V to −18 V ±0.002 ±0.01 ±0.002 ±0.01 ±0.002 ±0.01 %∆IO/%∆V−

= 1.0 mA

REF

Rev. C | Page 3 of 20

DAC08

DAC08A/DAC08H DAC08E DAC08C
Parameter

Power Supply Current I+ VS = ±5 V, I
I− −4.3 −5.8 −4.3 −5.8 −4.3 −5.8 mA
I+ VS = +5 V, −15 V, 2.4 3.8 2.4 3.8 2.4 3.8 mA
I− I
I+ VS = ±15 V, 2.5 3.8 2.5 3.8 2.5 3.8 mA
I− I
Power Dissipation P

I

135 174 135 174 135 174 mW

1

Guaranteed by design.

TYPICAL ELECTRICAL CHARACTERISTICS

VS = ±15 V, and I

Table 2.

Parameter Symbol Conditions All Grades Typical Unit

Reference Input Slew Rate dI/dt 8 mA/µs
Propagation Delay t
Settling Time t

Symbol

D

= 2.0 mA, unless otherwise noted. Output characteristics apply to both I

REF

Conditions Min Typ Max Min Typ Max Min Typ Max Unit

= 1.0 mA 2.3 3.8 2.3 3.8 2.3 3.8 mA

REF

= 2.0 mA −6.4 −7.8 −6.4 −7.8 −6.4 −7.8 mA

REF

= 2.0 mA −6.5 −7.8 −6.5 −7.8 −6.5 −7.8 mA

REF

±5 V, I

= 1.0 mA +5 V,

REF

−15 V,
= 2.0 mA ±15 V, I

REF

2.0 mA

, t

PLH

PHL

S

REF

33 48 33 48 33 48 mW

=

108 136 103 136 108 136 mW

TA = 25°C, any bit 35 ns
To ±1/2 LSB, all bits switched on or

= 25°C

off, T

A

OUT

and

.

I

OUT

85 ns

Rev. C | Page 4 of 20

DAC08

ABSOLUTE MAXIMUM RATINGS

Table 3.

Parameter Rating

Operating Temperature

DAC08AQ, DAC08Q −55°C to +125°C
DAC08HQ, DAC08EQ, DAC08CQ,

0°C to +70°C

DAC08HP, DAC08EP

DAC08CP, DAC08CS −40°C to +85°C
Junction Temperature (TJ) −65°C to +150°C
Storage Temperature Q Package −65°C to +150°C
Storage Temperature P Package −65°C to +125°C
Lead Temperature (Soldering, 60 sec) 300°C
V+ Supply to V− Supply 36 V
Logic Inputs V− to V− + 36 V
V

LC

V− to V+
Analog Current Outputs (at VS− = 15 V) 4.25 mA
Reference Input (V

to V15) V− to V+

14

Reference Input Differential Voltage

(V14 to V15) ±18 V

Reference Input Current (I14) 5.0 mA

Package Type θ

1

JA

θ

Unit

JC

16-Lead CERDIP (Q) 100 16 °C/W
16-Lead PDIP (P) 82 39 °C/W
20-Terminal LCC (RC) 76 36 °C/W
16-Lead SOIC (S) 111 35 °C/W

1

θJA is specified for worst-case mounting conditions, that is, θJA is specified for

device in socket for CERDIP, PDIP, and LCC packages; θ
device soldered to printed circuit board for SOIC package.

is specified for

JA

Stresses greater than those listed under Absolute Maximum
Ratings may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.

Rev. C | Page 5 of 20

DAC08

PIN CONNECTIONS

1

V

LC

I

2

OUT

V–

3

OUT

B2
B3
B4

DAC08

4

TOP VIEW

(Not To Scale)

5

6

7

8

I

(MSB) B1

Figure 2. 16-Lead Dual In-Line Package

(Q and P Suffixes)

16

COMP
V

15

V

14

V+

13

12

B8 (LSB)
B7

11

10

B6

9

B5

REF

REF

(–)
(+)

00268-C-002

V

REF

V

REF

COMP

I

I

(+)
(–)

V

OUT

OUT

V+

LC

V–

1

2

3

DAC08

4

TOP VIEW

(Not To Scale)

5

6

7

8

16

B8 (LSB)
B7

15

B6

14

B5

13

12

B4
B3

11

10

B2

9

B1 (MSB)

00268-C-003

Figure 3. 16-Lead SOIC

(S Suffix)

(–)

LC

REF

V

NC

V

COMP

20 19123

V

18

REF

V+

17

NC

16
15

B8 (LSB)
B7

14

B5

B6

B4

NC

I

OUT

NC

(MSB) B1

OUT

I

4

V–

5

DAC08

TOP VIEW

6

(Not To Scale)

7

B2

8

10 11 12 13

9

B3

NC = NO CONNECT

Figure 4. DAC08RC/883 20-Lead LCC

(RC Suffix)

(+)

00268-C-004

Rev. C | Page 6 of 20