Burr Brown Corporation DAC7641YB-2K, DAC7641YB, DAC7641Y-2K, DAC7641Y Datasheet

1

®

DAC7641

16-Bit, Voltage Output

DIGITAL-TO-ANALOG CONVERTER

®

DAC7641

DESCRIPTION

The DAC7641 is a 16-bit, voltage output digital-to­analog converter (DAC) 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 asynchronous update), 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 zero-scale of 0000H.
The DAC7641 can operate from a single +5V supply or
from +5V and –5V supplies.

Low power and small size per DAC make the DAC7641
ideal for automatic test equipment, DAC-per-pin
programmers, data acquisition systems, and closed­loop servo-control. The DAC7641 is available in a
TQFP-32 package, and offers guaranteed specifica­tions over the –40°C to +85°C temperature range.

FEATURES

● LOW POWER: 2.5mW

● 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

● ATE PIN ELECTRONICS

● CLOSED-LOOP SERVO-CONTROL

● MOTOR CONTROL

● DATA ACQUISITION SYSTEMS

● DAC-PER-PIN PROGRAMMERS

© 2000 Burr-Brown Corporation PDS-1532A Printed in U.S.A. June, 2000

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]

DAC

DAC

Register

Input

Register

I/O

Buffer

Control

Logic

V

REF

L V

REF

H

V

REF

H

Sense

V

REF

L

Sense

V

OUT

RST LDAC

CS

R/W

DATA I/O

16

RSTSEL

AGND DGND

V

OUT

Sense

DAC7641

V

CC

V

SS

V

DD

For most current data sheet and other product

information, visit www.burr-brown.com

DAC7641

®

2

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DAC7641

DAC7641Y DAC7641YB
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
ACCURACY

Linearity Error ±3 ±4 ±2 ±3 LSB
Differential Linearity Error ±2 ±3 ±1 ±2 LSB
Monotonicity, T

MIN

to T

MAX

14 15 Bits
Bipolar Zero Error ±1 ±3 ✻✻ mV
Bipolar Zero Error Drift 5 10 ✻✻ppm/°C
Full-Scale Error ±1 ±3 ✻✻ mV
Full-Scale Error Drift 5 10 ✻✻ppm/°C
Power Supply Rejection Ratio (PSRR)

At Full Scale 10 100 ✻✻ppm/V

ANALOG OUTPUT

Voltage Output

V

REF

= –2.5V, RL = 10kΩ, VSS = –5V

V

REF

LV

REF

H ✻✻V
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

CC

or V

SS

Indefinite ✻

REFERENCE INPUT

Ref High Input Voltage Range

V

REF

L + 1.25

+2.5 ✻✻V

Ref Low Input Voltage Range –2.5

V

REF

H – 1.25

✻✻V
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
Digital Feedthrough 2 ✻ nV-s
Output Noise Voltage f = 10kHz 60 ✻ nV/√Hz
DAC Glitch

7FFFH to 8000H or 8000H to 7FFF

H

40 ✻ nV-s

DIGITAL INPUT

V

IH

0.7 • V

DD

✻ V
V

IL

0.3 • V

DD

✻ V

I

IH

±10 ✻ µA

I

IL

±10 ✻ µA

DIGITAL OUTPUT

V

OH

IOH = –0.8mA 3.6 4.5 ✻✻ V

V

OL

IOL = 1.2mA 0.3 0.4 ✻✻ V

POWER SUPPLY

V

DD

+4.75 +5.0 +5.25 ✻✻✻ V

V

CC

+4.75 +5.0 +5.25 ✻✻✻ V

V

SS

–5.25 –5.0 –4.75 ✻✻✻ V

I

CC

0.4 0.5 ✻✻ mA

I

DD

15 ✻ µA

I

SS

–0.6 –0.5 –0.4 ✻✻ mA

Power 4 5.5 ✻✻ mW

TEMPERATURE RANGE

Specified Performance –40 +85 ✻✻°C

✻ Specifications same as DAC7641Y.

SPECIFICATIONS (Dual Supply)

At TA = T

MIN

to T

MAX

, VDD = V

CC

= +5V, VSS = –5V, V

REF

H = +2.5V, and V

REF

L = –2.5V, unless otherwise noted.

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.

3

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DAC7641

DAC7641Y DAC7641YB
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
ACCURACY

Linearity Error

(1)

±3 ±4 ±2 ±3 LSB
Differential Linearity Error ±2 ±3 ±1 ±2 LSB
Monotonicity, T

MIN

to T

MAX

14 15 Bits
Zero Scale Error ±1 ±3 ✻✻ mV
Zero Scale Error Drift 5 10 ✻✻ppm/°C
Full-Scale Error ±1 ±3 ✻✻ mV
Full-Scale Error Drift 5 10 ✻✻ppm/°C
Power Supply Rejection Ratio (PSRR)

At Full Scale 10 100 ✻✻ppm/V

ANALOG OUTPUT

Voltage Output V

REF

L = 0V, VSS = 0V, RL = 10kΩ 0V

REF

H ✻✻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

CC

Indefinite ✻

REFERENCE INPUT

Ref High Input Voltage Range

V

REF

L + 1.25

+2.5 ✻✻V

Ref Low Input Voltage Range 0

V

REF

H – 1.25

✻✻V
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
Digital Feedthrough 2 ✻ nV-s
Output Noise Voltage, f = 10kHz 60 ✻ nV/√Hz
DAC Glitch

7FFFH to 8000H or 8000H to 7FFF

H

40 ✻ nV-s

DIGITAL INPUT

V

IH

0.7 • V

DD

✻ V
V

IL

0.3 • V

DD

✻ V

I

IH

±10 ✻ µA

I

IL

±10 ✻ µA

DIGITAL OUTPUT

V

OH

IOH = –0.8mA 3.6 4.5 ✻✻ V

V

OL

IOL = 1.2mA 0.3 0.4 ✻✻ V

POWER SUPPLY

V

DD

+4.75 +5.0 +5.25 ✻✻✻ V

V

CC

+4.75 +5.0 +5.25 ✻✻✻ V

V

SS

000✻✻✻ V

I

CC

0.4 0.5 ✻✻ mA

I

DD

15 ✻ µA

Power 1.8 2.5 ✻✻ mW

TEMPERATURE RANGE

Specified Performance –40 +85 ✻✻°C

✻ Specifications same as DAC7641Y.

NOTE: (1) If V

SS

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

SPECIFICATIONS (Single Supply)

At TA = T

MIN

to T

MAX

, VDD = V

CC

= +5V, VSS = 0V, V

REF

H = +2.5V, and V

REF

L = 0V, unless otherwise noted.

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DAC7641

ABSOLUTE MAXIMUM RATINGS

(1)

V

SS

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

V

DD

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

V

REFL

to GND............................................................ –0.3V to (V

SS

– VCC)

V

REFH

to GND ........................................................... –0.3V to (V

SS

– VCC)

V

REFH

to V

REFL

....................................................................–0.3V to +11V

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

DD

+ 0.3V

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

DD

+ 0.3V

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

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

Storage Temperature Range .........................................–65°C to +150°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.

ELECTROSTATIC
DISCHARGE SENSITIVITY

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

MINIMUM

RELATIVE DIFFERENTIAL PACKAGE SPECIFICATION

ACCURACY NONLINEARITY DRAWING TEMPERATURE ORDERING TRANSPORT

PRODUCT (LSB) (LSB) PACKAGE NUMBER RANGE NUMBER

(1)

MEDIA

DAC7641Y ±4 ±3 TQFP-32 351 –40°C to +85°C DAC7641Y/250 Tape and Reel

" " " " " " DAC7641Y/2K Tape and Reel

DAC7641YB ±3 ±2 TQFP-32 351 –40°C to +85°C DAC7641YB/250 Tape and Reel

" " " " " " DAC7641YB/2K Tape and Reel

NOTES: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000 pieces
of “DAC7641Y/2K” will get a single 2000-piece Tape and Reel.

5

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DAC7641

19 LDAC DAC Load Strobe, rising-edge triggered.
20 RST Reset, rising-edge triggered. Depending on the state

of RSTSEL, the DAC registers are set to either mid­scale or zero.

21 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.

22 V

OUT

DAC Voltage Output

23 V

OUT

Sense DAC Output Amplifier Inverting Input. Used to close

the feedback loop at the load.

24 V

SS

Negative Power Supply
25 AGND Analog Ground
26 V

CC

Positive Power Supply
27 V

REFH

Sense DAC Reference High Sense Input

28 V

REFH

DAC Reference High Input
29 V

REFL

Sense DAC Reference Low Sense Input

30 V

REFL

DAC Reference Low Input
31 DGND Digital Ground
32 V

DD

Positive Power Supply

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 CS Chip Select, active low.
18 R/W Enabled by CS, controls data read and write from the

input register.

PIN DESCRIPTIONS

PIN CONFIGURATION

PIN NAME DESCRIPTION

DB15
DB14
DB13
DB12
DB11
DB10

DB9
DB8

V

SS

V

OUT

Sense

V

OUT

RSTSEL
RST
LDAC
R/W
CS

1
2
3
4
5
6
7
8

24
23
22
21
20
19
18
17

DAC7641

VDDDGND

V

REFLVREFL

Sense

V

REFHVREFH

Sense

V

CC

AGND

32

31

30

29

28

27

26

25

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

9

10

11

12

13

14

15

16

6

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DAC7641

TYPICAL PERFORMANCE CURVES: VSS = 0V

At TA = +25°C, VDD = +5V, VSS = 0V, V

REFH

= +2.5V, V

REFL

= 0V, representative unit, unless otherwise specified.

3.0

2.0

1.0
0

–1.0
–2.0
–3.0

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

(+25°C)

0000H2000H4000H6000H8000

H

Digital Input Code

A000

H

C000HE000HFFFF

H

3.0

2.0

1.0
0

–1.0
–2.0
–3.0

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

(+85°C)

0000H2000H4000H6000H8000

H

Digital Input Code

A000

H

C000HE000HFFFF

H

3.0

2.0

1.0
0

–1.0
–2.0
–3.0

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

(–40°C)

0000H2000H4000H6000H8000

H

Digital Input Code

A000

H

C000HE000HFFFF

H

2

1.5
1

0.5
0

–0.5

–1

–1.5

–2

Temperature (°C)

–40–30–20–100 102030405060708090

ZERO-SCALE ERROR vs TEMPERATURE

UPO (mV)

Code (0040H)

2

1.5
1

0.5
0

–0.5

–1

–1.5

–2

Temperature (°C)

–40–30–20–100 102030405060708090

POSITIVE FULL-SCALE ERROR vs TEMPERATURE

Positive Full-Scale Error (mV)

Code (FFFFH)

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

V

REFH

CURRENT vs CODE

V

REF

Current (mA)

0000H2000H4000H6000H8000

H

Digital Input Code

A000HC000HE000HFFFF

H