TEXAS INSTRUMENTS DAC7644 Technical data

®

For most current data sheet and other product

information, visit www.burr-brown.com

16-Bit, Quad Voltage Output

DIGITAL-TO-ANALOG CONVERTER

DAC7644

DAC7644

FEATURES

● LOW POWER: 10mW

● UNIPOLAR OR BIPOLAR OPERATION

● SETTLING TIME: 10µs to 0.003%

● 15-BIT LINEARITY AND MONOTONICITY:

–40°C to +85°C

● PROGRAMMABLE RESET TO MID-SCALE

OR ZERO-SCALE

● DATA READBACK

● DOUBLE-BUFFERED DATA INPUTS

APPLICATIONS

● PROCESS CONTROL

● CLOSED-LOOP SERVO-CONTROL

● MOTOR CONTROL

● DATA ACQUISITION SYSTEMS

● DAC-PER-PIN PROGRAMMERS

V

V

DAC7644

V

DD

CC

SS

DESCRIPTION

The DAC7644 is a 16-bit, quad voltage output digital­to-analog converter with guaranteed 15-bit monotonic
performance over the specified temperature range. It
accepts 16-bit parallel input data, has double-buffered
DAC input logic (allowing simultaneous update of all
DACs), and provides a readback mode of the internal
input registers. Programmable asynchronous reset clears
all registers to a mid-scale code of 8000H or to a zero­scale of 0000H. The DAC7644 can operate from a single
+5V supply or from +5V and –5V supplies.

Low power and small size per DAC make the DAC7644
ideal for automatic test equipment, DAC-per-pin pro­grammers, data acquisition systems, and closed-loop
servo-control. The DAC7644 is available in a 48-lead
SSOP package and offers guaranteed specifications
over the –40°C to +85°C temperature range.

V

V

L

REF

AB Sense

V

REF

L AB V

H AB

REF

H

REF

AB Sense

SBAS121

16

DATA I/O

A1
A0

CS

R/W

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

I/O

Buffer

Control

Logic

© 1999 Burr-Brown Corporation PDS-1535B Printed in U.S.A. November, 1999

Input

Register A

Input

Register B

Input

Register C

Input

Register D

AGND DGND

RST

DAC

Register A

DAC

Register B

DAC

Register C

DAC

Register D

RSTSEL

1

LOADDACS

V

L

REF

CD Sense

DAC A

DAC B

DAC C

DAC D

V

REF

L CD V

V

A

OUT

V

Sense

OUTA

V

B

OUT

V

Sense

OUTB

V

C

OUT

V

Sense

OUTC

V

D

OUT

V

Sense

OUTD

H CD

V

REF

H

REF

CD Sense

DAC7644

®

SPECIFICATIONS (Dual Supply)

At TA = T

PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
ACCURACY

Linearity Error ±3 ±4 ±2 ±3 LSB
Linearity Match ±4 ±2 LSB
Differential Linearity Error ±2 ±3 ±1 ±2 LSB
Monotonicity, T
Bipolar Zero Error ±1 ±2 ✻✻ mV
Bipolar Zero Error Drift 5 10 ✻✻ppm/°C
Full-Scale Error ±1 ±2 ✻✻ mV
Full-Scale Error Drift 5 10 ✻✻ppm/°C
Bipolar Zero Matching Channel-to-Channel Matching ±1 ±2 ±1 ±2mV
Full Scale Matching Channel-to-Channel Matching ±1 ±2 ±1 ±2mV
Power Supply Rejection Ratio (PSRR)

ANALOG OUTPUT

Voltage Output
Output Current –1.25 +1.25 ✻✻mA
Maximum Load Capacitance No Oscillation 500 ✻ pF
Short-Circuit Current –10, +30 ✻ mA
Short-Circuit Duration GND or V

REFERENCE INPUT

Ref High Input Voltage Range
Ref Low Input Voltage Range –2.5
Ref High Input Current 500 ✻ µA
Ref Low Input Current –500 ✻ µA

DYNAMIC PERFORMANCE

Settling Time To ±0.003%, 5V Output Step 8 10 ✻✻ µs
Channel-to-Channel Crosstalk See Figure 5. 0.5 ✻ LSB
Digital Feedthrough 2 ✻ nV-s
Output Noise Voltage f = 10kHz 60 ✻ nV/√Hz
DAC Glitch

DIGITAL INPUT

V
V
I
I

DIGITAL OUTPUT

V
V

POWER SUPPLY

V
V
V
I
I
I
Power 15 20 ✻✻ mW

TEMPERATURE RANGE

Specified Performance –40 +85 ✻✻°C

✻ Specifications same as DAC7644E.

to T

MIN

MAX

, VDD = V

= +5V, VSS = –5V, V

CC

H = +2.5V, and V

REF

L = –2.5V, unless otherwise noted.

REF

DAC7644E DAC7644EB

MIN

to T

MAX

14 15 Bits

At Full Scale 10 100 ✻✻ppm/V

V

= –2.5V, RL = 10kΩ, VSS = –5V

REF

or V

CC

SS

7FFFH to 8000H or 8000H to 7FFF

IH

IL
IH
IL

OH

OL

DD

CC

SS
CC
DD
SS

IOH = –0.8mA 3.6 4.5 ✻✻ V

IOL = 1.2mA 0.3 0.4 ✻✻ V

V

LV

REF

H ✻✻V

REF

Indefinite ✻

V

H

L + 1.25

REF

0.7 • V

40 ✻ nV-s

DD

+2.5 ✻✻V

V

H – 1.25

REF

✻✻V

✻ V

0.3 • V

DD

±10 ✻ µA

✻ V

±10 ✻ µA

+4.75 +5.0 +5.25 ✻✻✻ V
+4.75 +5.0 +5.25 ✻✻✻ V
–5.25 –5.0 –4.75 ✻✻✻ V

1.5 2 ✻✻ mA
50 ✻ µA

–2.3 –1.5 ✻✻ mA

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

®

DAC7644

2

SPECIFICATIONS (Single Supply)

At TA = T

PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
ACCURACY

Linearity Error
Linearity Match ±4 ±2 LSB
Differential Linearity Error ±2 ±3 ±1 ±2 LSB
Monotonicity, T
Zero Scale Error ±1 ±2 ✻✻ mV
Zero Scale Error Drift 5 10 ✻✻ppm/°C
Full-Scale Error ±1 ±2 ✻✻ mV
Full-Scale Error Drift 5 10 ✻✻ppm/°C
Zero Scale Matching Channel-to-Channel Matching ±1 ±2 ±1 ±2mV
Full-Scale Matching Channel-to-Channel Matching ±1 ±2 ±1 ±2mV
Power Supply Rejection Ratio (PSRR)

ANALOG OUTPUT

Voltage Output V
Output Current –1.25 +1.25 ✻✻mA
Maximum Load Capacitance No Oscillation 500 ✻ pF
Short-Circuit Current ±30 ✻ mA
Short-Circuit Duration GND or V

REFERENCE INPUT

Ref High Input Voltage Range
Ref Low Input Voltage Range 0
Ref High Input Current 250 ✻ µA
Ref Low Input Current –250 ✻ µA

DYNAMIC PERFORMANCE

Settling Time To ±0.003%, 2.5V Output Step 8 10 ✻✻ µs
Channel-to-Channel Crosstalk See Figure 6. 0.5 ✻ LSB
Digital Feedthrough 2 ✻ nV-s
Output Noise Voltage, f = 10kHz 60 ✻ nV/√Hz
DAC Glitch

DIGITAL INPUT

V
V
I
I

DIGITAL OUTPUT

V
V

POWER SUPPLY

V
V
V
I
I
Power 7.5 10 ✻✻ mW

TEMPERATURE RANGE

Specified Performance –40 +85 ✻✻°C
NOTE: (1) If V
✻ Specifications same as DAC7644E.

to T

MIN

MAX

, VDD = V

= +5V, VSS = 0V, V

CC

H = +2.5V, and V

REF

L = 0V, unless otherwise noted.

REF

DAC7644E DAC7644EB

(1)

MIN

to T

MAX

14 15 Bits

±3 ±4 ±2 ±3 LSB

At Full Scale 10 100 ✻✻ppm/V

L = 0V, VSS = 0V, RL = 10kΩ 0V

REF

CC

V

REF

7FFFH to 8000H or 8000H to 7FFF

IH

IL
IH
IL

OH

OL

DD

CC

SS
CC
DD

= 0V specification applies at Code 0040H and above due to possible negative zero-scale error.

SS

IOH = –0.8mA 3.6 4.5 ✻✻ V

IOL = 1.2mA 0.3 0.4 ✻✻ V

H

0.7 • V

+4.75 +5.0 +5.25 ✻✻✻ V
+4.75 +5.0 +5.25 ✻✻✻ V

Indefinite ✻

L + 1.25

40 ✻ nV-s

DD

000✻✻✻ V

1.5 2 ✻✻ mA
50 ✻ µA

H ✻✻V

REF

+2.5 ✻✻V

V

H – 1.25

REF

✻✻V

✻ V

0.3 • V

DD

±10 ✻ µA

✻ V

±10 ✻ µA

®

3

DAC7644

ABSOLUTE MAXIMUM RATINGS

V

and V

CC

V

CC

V

REFL

V

CC

V

REFH

Digital Input Voltage to GND ................................... –0.3V to V

Digital Output Voltage to GND ................................. –0.3V to V

Maximum Junction Temperature................................................... +150°C

Operating Temperature Range ........................................–40°C to +85°C

Storage Temperature Range ......................................... –65°C to +125°C

Lead Temperature (soldering, 10s) ............................................... +300°C

NOTE: (1) Stresses above those listed under “Absolute Maximum Ratings”
may cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability.

to VSS.............................................................. –0.3V to 11V

DD

and V

to GND ........................................................... –0.3V to 5.5V

DD

to VSS.............................................................–0.3V to (V

to V

H ............................................................ –0.3V to (V

REF

to V

L ......................................................... –0.3V to (V

REF

(1)

ELECTROSTATIC
DISCHARGE SENSITIVITY

– VSS)

CC
CC
CC

+ 0.3V

DD

+ 0.3V

DD

– VSS)
– VSS)

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.

PACKAGE/ORDERING INFORMATION

LINEARITY DIFFERENTIAL PACKAGE SPECIFICATION

PRODUCT (LSB) (LSB) PACKAGE NUMBER

ERROR NONLINEARITY DRAWING TEMPERATURE ORDERING TRANSPORT

DAC7644E ±4 ±3 48-Lead SSOP 333 –40°C to +85°C DAC7644E Rails

"" """ "DAC7644E/1K Tape and Reel

DAC7644EB ±3 ±2 48-Lead SSOP 333 –40°C to +85°C DAC7644EB Rails

"" """ "DAC7644EB/1K Tape and Reel

NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/)
are available only in Tape and Reel in the quantities indicated (e.g., /1K indicates 1000 devices per reel). Ordering 1000 pieces of “DAC7644/1K” will get a single
1000-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.

(1)

RANGE NUMBER

(2)

MEDIA

®

DAC7644

4

PIN CONFIGURATION

Top View SSOP

DB15
DB14
DB13
DB12
DB11
DB10

DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0

RSTSEL

RST

LOADDACS

R/W

DGND

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21

A1

22

A0

23

CS

24

DAC7644

48

NC

47

NC

46

NC

45

NC

44

A Sense

V

OUT

43

A

V

OUT

42

L AB Sense

V

REF

41

L AB

V

REF

40

H AB

V

REF

39

H AB Sense

V

REF

38

B Sense

V

OUT

37

B

V

OUT

36

C Sense

V

OUT

35

C

V

OUT

34

H CD Sense

V

REF

33

H CD

V

REF

32

L CD

V

REF

31

L CD Sense

V

REF

30

D Sense

V

OUT

29

D

V

OUT

28

V

SS

27

AGND

26

V

CC

25

V

DD

PIN DESCRIPTIONS

PIN NAME DESCRIPTION

1 DB15 Data Bit 15, MSB
2 DB14 Data Bit 14
3 DB13 Data Bit 13
4 DB12 Data Bit 12
5 DB11 Data Bit 11
6 DB10 Data Bit 10
7 DB9 Data Bit 9
8 DB8 Data Bit 8

9 DB7 Data Bit 7
10 DB6 Data Bit 6
11 DB5 Data Bit 5
12 DB4 Data Bit 4
13 DB3 Data Bit 3
14 DB2 Data Bit 2
15 DB1 Data Bit 1
16 DB0 Data Bit 0, LSB
17 RSTSEL Reset Select. Determines the action of RST. If

HIGH, a RST command will set the DAC registers to
mid-scale. If LOW, a RST command will set the DAC
registers to zero.

18 RST Reset, Rising Edge Triggered. Depending on the

state of RSTSEL, the DAC registers are set to either
mid-scale or zero.

19 LOADDACS DAC Output Registers Load Control. Rising edge

triggered.

20 R/W Enabled by the CS, Controls Data Read and Write

from the Input Registers.

21 A1 Enabled by the CS, in Combination With A0 Selects

the Individual DAC Input Registers.

22 A0 Enabled by the CS, in Combination With A1 Selects

the Individual DAC Input Registers.

PIN NAME DESCRIPTION

23 CS Chip Select. Active LOW.
24 DGND Digital Ground
25 V
26 V

DD
CC

Positive Power Supply (digital)

Positive Power Supply (analog)
27 AGND Analog Ground
28 V
29 V
30 V

31 V
32 V
33 V
34 V

OUT

L CD Sense DAC C and D Reference Low Sense Input

REF

REF
REF

H CD Sense DAC C and D Reference High Sense Input

REF

35 V
36 V

OUT

37 V
38 V

39 V
40 V
41 V
42 V

OUT

H AB Sense DAC A and B Reference High Sense Input

REF

REF

REF

L AB Sense DAC A and B Reference Low Sense Input

REF

43 V
44 V

OUT

SS

OUT

D Sense DAC D’s Output Amplifier Inverting Input. Used to

L CD DAC C and D Reference Low Input

H CD DAC C and D Reference High Input

OUT

C Sense DAC C’s Output Amplifier Inverting Input. Used to

OUT

B Sense DAC B’s Output Amplifier Inverting Input. Used to

H AB DAC A and B Reference High Input

L AB DAC A and B Reference Low Input

OUT

A Sense DAC A’s Output Amplifier Inverting Input. Used to

Negative Power Supply

D DAC D Voltage Output

close the feedback loop at the load.

C DAC C Voltage Output

close the feedback loop at the load.

B DAC B Voltage Output

close the feedback loop at the load.

A DAC A Voltage Input

close the feedback loop at the load.
45 NC No Connection
46 NC No Connection
47 NC No Connection
48 NC No Connection

®

5

DAC7644

TYPICAL PERFORMANCE CURVES: VSS = 0V

At TA = +25°C, VDD = VCC = +5V, VSS = 0V, V

REFH

= +2.5V, V

= 0V, representative unit, unless otherwise specified.

REFL

+25°C

DIFFERENTIAL LINEARITY ERROR vs CODE

2.0

1.5

1.0

0.5
0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

0000H2000H4000H6000H8000

DIFFERENTIAL LINEARITY ERROR vs CODE

2.0

1.5

1.0

0.5
0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

0000H2000H4000H6000H8000

LINEARITY ERROR AND

(DAC A, +25°C)

A000

H

H

Digital Input Code

LINEARITY ERROR AND

(DAC C, +25°C)

A000

H

H

Digital Input Code

C000HE000HFFFF

C000HE000HFFFF

DIFFERENTIAL LINEARITY ERROR vs CODE

LINEARITY ERROR AND

(DAC B, +25°C)

2.0

1.5

1.0

0.5
0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

H

0000H2000H4000H6000H8000

A000

H

C000HE000HFFFF

H

H

Digital Input Code

LINEARITY ERROR AND

DIFFERENTIAL LINEARITY ERROR vs CODE

(DAC D, +25°C)

2.0

1.5

1.0

0.5
0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

H

0000H2000H4000H6000H8000

A000

H

C000HE000HFFFF

H

H

Digital Input Code

+85°C

DIFFERENTIAL LINEARITY ERROR vs CODE

2.0

1.5

1.0

0.5
0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

0000H2000H4000H6000H8000

®

DAC7644

LINEARITY ERROR AND

(DAC B, +85°C)

A000

H

H

Digital Input Code

C000HE000HFFFF

DIFFERENTIAL LINEARITY ERROR vs CODE

LINEARITY ERROR AND

(DAC B, +85°C)

2.0

1.5

1.0

0.5
0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

H

0000H2000H4000H6000H8000

A000

H

C000HE000HFFFF

H

H

Digital Input Code

6

TYPICAL PERFORMANCE CURVES: VSS = 0V (CONT)

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

LE (LSB)DLE (LSB)

LINEARITY ERROR AND

DIFFERENTIAL LINEARITY ERROR vs CODE

(DAC D, +85°C)

0000H2000H4000H6000H8000

H

Digital Input Code

A000

H

C000HE000HFFFF

H

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

LE (LSB)DLE (LSB)

LINEARITY ERROR AND

DIFFERENTIAL LINEARITY ERROR vs CODE

(DAC B, –40°C)

0000H2000H4000H6000H8000

H

Digital Input Code

A000

H

C000HE000HFFFF

H

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

LE (LSB)DLE (LSB)

LINEARITY ERROR AND

DIFFERENTIAL LINEARITY ERROR vs CODE

(DAC D, –40°C)

0000H2000H4000H6000H8000

H

Digital Input Code

A000

H

C000HE000HFFFF

H

At TA = +25°C, VDD = VCC = +5V, VSS = 0V, V

REFH

= +2.5V, V

= 0V, representative unit, unless otherwise specified.

REFL

+85°C (cont)

DIFFERENTIAL LINEARITY ERROR vs CODE

2.0

1.5

1.0

0.5
0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

0000H2000H4000H6000H8000

–40°C

DIFFERENTIAL LINEARITY ERROR vs CODE

2.0

1.5

1.0

0.5

0

–0.5

LE (LSB)DLE (LSB)

–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5

0
–0.5
–1.0
–1.5
–2.0

0000H2000H4000H6000H8000

LINEARITY ERROR AND

(DAC C, +85°C)

A000

H

H

Digital Input Code

LINEARITY ERROR AND

(DAC A, –40°C)

A000

H

H

Digital Input Code

C000HE000HFFFF

C000HE000HFFFF

H

H

LE (LSB)DLE (LSB)

DIFFERENTIAL LINEARITY ERROR vs CODE

LINEARITY ERROR AND

(DAC C, –40°C)

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

2.0

1.5

1.0

0.5
0

–0.5
–1.0
–1.5
–2.0

0000H2000H4000H6000H8000

Digital Input Code

A000

H

C000HE000HFFFF

H

H

®

7

DAC7644