LTC2754AIUKG-16#PBF datasheet, PDF

LTC2754

Quad 12-/16-Bit

SoftSpan I

OUT

DACs

FEATURES

n

DESCRIPTION

The LTC

®

2754 is a family of quad 12- and 16-bit multiplying

serial-input, current-output digital-to-analog converters.

They operate from a single 3V to 5V supply and are guar-

anteed monotonic over temperature. The LTC2754A-16

provides full 16-bit performance (±1LSB INL and DNL,

max) over temperature without any adjustments. These

SoftSpan™ DACs offer six output ranges (up to ±10V) that

can be programmed through the 3-wire SPI serial interface,

or pinstrapped for operation in a single range.

The content of any on-chip register (including DAC out-

put-range settings) can be veriﬁed in just one instruction

cycle; and if you change any register, that register will be

automatically read back during the next instruction cycle.

Voltage-controlled offset and gain adjustments are also

provided; and the power-on reset circuit and

CLR

pin both

reset the DAC outputs to 0V regardless of output range.

L,

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. SoftSpan is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 5481178.

Program or Pin-Strap Six Output Ranges

0V to 5V, 0V to 10V, –2.5V to 7.5V, ±2.5V, ±5V, ±10V

Maximum 16-Bit INL Error: ±1 LSB over

Temperature

Guaranteed Monotonic over Temperature

Low Glitch Impulse 0.26nV•s (3V), 1.25nV•s (5V)

Serial Readback of All On-Chip Registers

Low 1μA Maximum Supply Current

2.7V to 5.5V Single-Supply Operation

16-Bit Settling Time: 2μs

Voltage-Controlled Offset and Gain Trims

Clear and Power-On-Reset to 0V Regardless of

Output Range

52-Pin 7mm

×

8mm QFN Package

APPLICATIONS

■

High Resolution Offset and Gain Adjustment

Process Control and Industrial Automation

Automatic Test Equipment

Data Acquisition Systems

TYPICAL APPLICATION

Quad 16-Bit V

OUT

DAC with Software-Selectable Ranges

V

REFA

GE

ADJA

R

COMA

R

COMB

GE

ADJB

V

REFB

REFA

R

OFSA

R

OFSB

R

INA

R

INB

V

DD

V

OSADJA

I

OUT2A

I

OUT1A

R

FBA

REFB

V

OUTA

DAC A

DAC B

I

OUT1B

R

FBB

INL (LSB)

SPI with READBACK

R

FBD

I

OUT1D

I

OUT2D

V

OSADJD

DAC D

V

OUTD

LTC2754-16

R

FBC

DAC C

I

OUT2C

V

OSADJC

REFD

R

OFSD

GND

M-SPAN

R

IND

REFC

R

GE

ADJC COMC

R

COMD

R

OFSC

R

INC

GE

ADJD

ALL AMPLIFIERS 1/2 LT1469

V

REFD

V

REFC

2754 TA01

+

–

I

OUT1C

–

+

–

+

–

+

–

LTC2754-16 Integral

Nonlinearity (INL)

1.0

V

OSADJB

I

OUT2B

0.8

0.6

V

OUTB

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

16384

32768

CODE

49152

65535

2754 G01

V

DD

= 5V

V

REF

= 5V

±10V RANGE

–

+

–

V

OUTC

2754f

1

LTC2754

ABSOLUTE MAXIMUM RATINGS

(Notes 1, 2)

PIN CONFIGURATION

TOP VIEW

V

OSADJA

V

OSADJB

R

COMA

R

COMB

40 GE

ADJB

39 R

INB

38 I

OUT2B

37 GND

36

LDAC

35 S2

53

34 S1

33 S0

32 M-SPAN

31

RFLAG

30

CLR

29 I

OUT2C

28 R

INC

27 GE

ADJC

15 16 17 18 19 20 21 22 23 24 25 26

REFD

R

OFSD

V

OSADJD

V

OSADJC

R

OFSC

REFC

R

COMD

R

COMC

R

FBD

I

OUT1D

I

OUT1C

R

FBC

I

OUT1A

I

OUT1B

R

OFSA

R

OFSB

REFB

REFA

R

FBA

R

FBB

I

OUT1X

, I

OUT2X

to GND ............................................±0.3V

R

INX

, R

COMX

, REFX, R

FBX

, R

OFSX

, V

OSADJX

,

GE

ADJX

to GND ........................................................±18V

V

DD

to GND .................................................. –0.3V to 7V

Digital Inputs and

Outputs to GND ................ –0.3V to V

DD

+0.3V (max 7V)

Operating Temperature Range

LTC2754C ................................................ 0°C to 70°C

LTC2754I..............................................–40°C to 85°C

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

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

52 51 50 49 48 47 46 45 44 43 42 41

GE

ADJA

1

R

INA

2

I

OUT2A

3

GND 4

CS/LD

5

SDI 6

SCK 7

SRO 8

SROGND 9

V

DD

10

GND 11

I

OUT2D

12

R

IND

13

GE

ADJD

14

UKG PACKAGE

52-LEAD (7mm 8mm) PLASTIC QFN

T

JMAX

= 150°C,

θ

JA

= 29°C/W

EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

LEAD FREE FINISH

LTC2754CUKG-12#PBF

LTC2754IUKG-12#PBF

LTC2754BIUKG-16#PBF

LTC2754AIUKG-16#PBF

TAPE AND REEL

LTC2754CUKG-12#TRPBF

LTC2754IUKG-12#TRPBF

LTC2754BIUKG-16#TRPBF

LTC2754AIUKG-16#TRPBF

PART MARKING*

LTC2754UKG-12

LTC2754UKG-16

PACKAGE DESCRIPTION

52-Lead (7mm

×

8mm) Plastic QFN

52-Lead (7mm

×

8mm) Plastic QFN

52-Lead (7mm

×

8mm) Plastic QFN

52-Lead (7mm

×

8mm) Plastic QFN

52-Lead (7mm

×

8mm) Plastic QFN

52-Lead (7mm

×

8mm) Plastic QFN

TEMPERATURE RANGE

0°C to 70°C

–40°C to 85°C

0°C to 70°C

–40°C to 85°C

0°C to 70°C

–40°C to 85°C

LTC2754BCUKG-16#PBF LTC2754BCUKG-16#TRPBF

LTC2754ACUKG-16#PBF LTC2754ACUKG-16#TRPBF

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges. *The temperature grade is identiﬁed by a label on the shipping container.

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

For more information on lead free part marking, go to:

http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to:

http://www.linear.com/tapeandreel/

2754f

2

LTC2754

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

Resolution

Monotonicity

DNL

INL

GE

Differential

Nonlinearity

Integral Nonlinearity

Gain Error

Gain Error Temp-

erature Coefﬁcient

BZE

Bipolar Zero Error

Bipolar Zero Temp-

erature Coefﬁcient

PSR

I

LKG

Power Supply

Rejection

V

DD

= 5V, ±10%

V

DD

= 3V, ±10%

●

V

DD

= 5V, V

REF

= 5V unless otherwise speciﬁed. The

●

denotes the

speciﬁcations which apply over the full operating temperature range, otherwise speciﬁcations are at T

A

= 25°C.

CONDITIONS

●

MIN

12

LTC2754-12

TYP

MAX

MIN

16

LTC2754B-16

TYP

MAX

MIN

16

LTC2754A-16

TYP

MAX

UNITS

Bits

Static Performance

±1

±0.5

±1

±2

±1

±0.5

±0.025

±0.06

±0.05

±2

±5

±0.05

±1

±2

±20

±0.2

±0.4

±2

±1

±12

LSB

ppm/°C

All Output Ranges

ΔGain/ΔTemp

All Bipolar Ranges

●

±0.2

±0.5

±12

±1

±0.5

±8

LSB

ppm/°C

±0.4

±1

±2

±5

±0.03

±0.1

±0.05

±0.2

±0.5

±2

±5

LSB/V

nA

I

OUT1

Leakage Current T

A

= 25°C

T

MIN

to T

MAX

●

V

DD

= 5V, V

REF

= 5V unless otherwise speciﬁed. The

●

denotes speciﬁcations that apply over the full operating temperature range,

otherwise speciﬁcations are at T

A

= 25°C.

SYMBOL

Analog Pins

Reference Inverting Resistors

R

REF

R

FB

R

OFS

R

VOSADJ

R

GEADJ

C

IOUT1

DAC Input Resistance

Feedback Resistors

Bipolar Offset Resistors

Offset Adjust Resistors

Gain Adjust Resistors

Output Capacitance

Full-Scale

Zero-Scale

0V to 10V Range, 10V Step. To ±0.0015% FS

(Note 5)

V

DD

= 5V (Note 6)

V

DD

= 3V (Note 6)

(Note 7)

0V to 5V Range, V

REF

= 3V

RMS

,

Code = Full Scale, –3dB BW

0V to 5V Range, V

REF

= ±10V, 10kHz

Sine Wave

(Note 8)

(Note 9) Multiplying

(Note 10) at I

OUT1

(Note 3)

(Note 4)

●

PARAMETER

CONDITIONS

MIN

16

8

16

1024

2048

TYP

20

10

20

1280

2560

75

45

2

1.25

0.26

2

0.5

–109

–110

13

MAX

UNITS

kΩ

pF

Dynamic Performance

Output Settling Time

Glitch Impulse

Digital-to-Analog Glitch Impulse

Reference Multiplying BW

Multiplying Feedthrough Error

Analog Crosstalk

THD

Total Harmonic Distortion

Output Noise Voltage Density

μs

nV•s

MHz

mV

dB

nV/√Hz

2754f

3

LTC2754

ELECTRICAL CHARACTERISTICS

SYMBOL

Power Supply

V

DD

I

DD

Digital Inputs

V

IH

V

IL

Digital Input High Voltage

Digital Input Low Voltage

Hysteresis Voltage

I

IN

C

IN

Digital Outputs

V

OH

V

OL

I

OH

= 200μA

I

OL

= 200μA

2.7V ≤ V

DD

≤ 5.5V

2.7V ≤ V

DD

≤ 5.5V

●

V

DD

= 5V, V

REF

= 5V unless otherwise speciﬁed. The

●

denotes the

speciﬁcations which apply over the full operating temperature range, otherwise speciﬁcations are at T

A

= 25°C.

PARAMETER

Supply Voltage

Supply Current, V

DD

Digital Inputs = 0V or V

DD

3.3V ≤ V

DD

≤ 5.5V

2.7V ≤ V

DD

< 3.3V

4.5V < V

DD

≤ 5.5V

2.7V ≤ V

DD

≤ 4.5V

V

IN

= GND to V

DD

V

IN

= 0V (Note 11)

CONDITIONS

●

MIN

2.7

TYP

MAX

5.5

UNITS

V

μA

V

0.5

2.4

2

1

●

0.8

0.6

0.1

±1

6

V

DD

– 0.4

0.4

V

μA

pF

V

Digital Input Current

Digital Input Capacitance

●

TIMING CHARACTERISTICS

otherwise speciﬁcations are at T

A

= 25°C.

SYMBOL

t

1

t

2

t

3

t

4

t

5

t

6

t

7

t

8

t

9

t

10

t

11

t

12

t

13

PARAMETER

SDI Valid to SCK Set-Up

SDI Valid to SCK Hold

SCK High Time

SCK Low Time

CS/LD

Pulse Width

LSB SCK High to

CS/LD

High

CS/LD

Low to SCK Positive Edge

CS/LD

High to SCK Positive Edge

SRO Propagation Delay

CLR

Pulse Width Low

LDAC

Pulse Width Low

CLR

Low to

RFLAG

Low

CS/LD

High to

RFLAG

High

SCK Frequency

V

DD

= 2.7V to 3.3V

t

1

t

2

t

3

t

4

t

5

t

6

SDI Valid to SCK Set-Up

SDI Valid to SCK Hold

SCK High Time

SCK Low Time

CS/LD

Pulse Width

LSB SCK High to

CS/LD

High

V

DD

= 4.5V to 5.5V

The

●

denotes speciﬁcations that apply over the full operating temperature range,

CONDITIONS

●

MIN

7

11

9

4

TYP

MAX

UNITS

ns

C

LOAD

= 10pF

●

18

36

15

50

40

9

15

12

5

ns

MHz

ns

C

LOAD

= 10pF (Note 11)

C

LOAD

= 10pF (Note 11)

50% Duty Cycle (Note 12)

●

(Note 11)

C

L

= 10pF

●

2754f

4

LTC2754

TIMING CHARACTERISTICS

otherwise speciﬁcations are at T

A

= 25°C.

PARAMETER

CS/LD

Low to SCK Positive Edge

CS/LD

High to SCK Positive Edge

SRO Propagation Delay

CLR

Pulse Width Low

LDAC

Pulse Width Low

CLR

Low to

RFLAG

Low

CS/LD

High to

RFLAG

high

SCK Frequency

C

LOAD

= 10pF (Note 11)

C

LOAD

= 10pF (Note 11)

50% Duty Cycle (Note 12)

C

LOAD

= 10pF

SYMBOL

t

7

t

8

t

9

t

10

t

11

t

12

t

13

The

●

denotes speciﬁcations that apply over the full operating temperature range,

CONDITIONS

●

MIN

5

TYP

MAX

UNITS

ns

26

60

20

70

60

25

ns

MHz

Note 1:

Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2:

Continuous operation above the speciﬁed maximum operating

junction temperature may impair device reliability.

Note 3:

Because of the proprietary SoftSpan switching architecture, the

measured resistance looking into each of the speciﬁed pins is constant for

all output ranges if the I

OUT1X

and I

OUT2X

pins are held at ground.

Note 4:

Input resistors measured from R

INX

to R

COMX

; feedback resistors

measured from R

COMX

to REFX.

Note 5:

Using LT1469 with C

FEEDBACK

= 15pF. A ±0.0015% settling time

of 1.7μs can be achieved by optimizing the time constant on an individual

basis. See Application Note 74, Component and Measurement Advances

Ensure 16-Bit DAC Settling Time.

Note 6:

Measured at the major carry transition, 0V to 5V range. Output

ampliﬁer: LT1469; C

FB

= 27pF.

Note 7.

Full-scale transition; REF = 0V.

Note 8.

Analog Crosstalk is deﬁned as the AC voltage ratio V

OUTB

/V

REFA

,

expressed in dB. REFB is grounded, and DAC B is set to 0V-5V span and

zero-, mid- or full- scale code. V

REFA

is a 3V

RMS

, 1kHz sine wave. Crosstalk

between other DAC channels is similar or better.

Note 9.

REF = 6V

RMS

at 1kHz. 0V to 5V range. DAC code = FS. Output

ampliﬁer = LT1469.

Note 10.

Calculation from V

n

= √4kTRB, where k = 1.38E-23 J/°K

(Boltzmann constant), R = resistance (Ω), T = temperature (°K), and B =

bandwidth (Hz). 0V to 5V Range; zero-, mid-, or full- scale.

Note 11.

Guaranteed by design, not subject to test.

Note 12.

When using SRO, maximum SCK frequency f

MAX

is limited by

SRO propagation delay t

9

as follows:

⎛

⎞

1

⎟

f

MAX

= ⎜

⎜

2

(

t

+

t

)

⎟

, where t is the setup time of the receiving device.

S

9

S

⎠

⎝

TYPICAL PERFORMANCE CHARACTERISTICS

LTC2754-16

Integral Nonlinearity (INL)

1.0

0.8

0.6

0.4

DNL (LSB)

INL (LSB)

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

16384

32768

CODE

49152

65535

2754 G01

T

A

= 25°C, unless otherwise noted.

Differential Nonlinearity (DNL)

1.0

V

DD

= 5V

V

REF

= 5V

±10V RANGE

0.8

0.6

0.4

INL (LSB)

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

0

16384

32768

CODE

49152

65535

2754 G02

INL vs Temperature

V

DD

= 5V

0.8 V

REF

= 5V

±10V RANGE

0.6

0.4

0.2

0.0

–0.2

–0.4

–0.6

–0.8

–1.0

–40

–20

20

40

0

60

TEMPERATURE (°C)

80

2754 G03

V

DD

= 5V

V

REF

= 5V

±10V RANGE

+INL

–INL

2754f

5

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Converter Type	General Purpose
Resolution	16bit
Number of DAC Channels	4
Number of Outputs per Chip	4
Maximum Settling Time (us)	2(Typ)
Digital Interface Type	Serial (3-Wire, SPI)
Output Type	Current
Voltage Reference	External
Minimum Single Supply Voltage (V)	2.7
Typical Single Supply Voltage (V)	5
Maximum Single Supply Voltage (V)	5.5
Power Supply Type	Single
Maximum Power Dissipation (mW)	0.0015(Typ)
Integral Nonlinearity Error	±1LSB
Full Scale Error	±12LSB
Digital Supply Support	No
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	85
Packaging	Tube
Pin Count	52
Standard Package Name	QFN
Supplier Package	QFN EP
Mounting	Surface Mount
Package Height	0.95(Max)
Package Length	8
Package Width	7
PCB changed	52
Lead Shape	No Lead

	LTC2754AIUKG-16#PBF	LTC2754ACUKG-16#PBF	LTC2754ACUKG-16#TRPBF	LTC2754AIUKG-16#TRPBF	LTC2754BCUKG-16#PBF	LTC2754BIUKG-16#PBF	LTC2754BIUKG-16#TRPBF	LTC2754CUKG-12#PBF	LTC2754IUKG-12#PBF	LTC2754IUKG-12#TRPBF
Description	DAC 4-CH 16-bit 52-Pin QFN EP Tube	DAC 4-CH 16-bit 52-Pin QFN EP Tube	DAC 4-CH 16-bit 52-Pin QFN EP T/R	DAC 4-CH 16-bit 52-Pin QFN EP T/R	DAC 4-CH 16-bit 52-Pin QFN EP Tube	DAC 4-CH 16-bit 52-Pin QFN EP Tube	DAC 4-CH 16-bit 52-Pin QFN EP T/R	DAC 4-CH 12-bit 52-Pin QFN EP Tube	DAC 4-CH 12-bit 52-Pin QFN EP Tube	DAC 4-CH 12-bit 52-Pin QFN EP T/R
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Converter Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Resolution	16bit	16bit	16bit	16bit	16bit	16bit	16bit	12bit	12bit	12bit
Number of DAC Channels	4	4	4	4	4	4	4	4	4	4
Number of Outputs per Chip	4	4	4	4	4	4	4	4	4	4
Maximum Settling Time (us)	2(Typ)	2(Typ)	2(Typ)	2(Typ)	2(Typ)	2(Typ)	2(Typ)	2(Typ)	2(Typ)	2(Typ)
Digital Interface Type	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)	Serial (3-Wire, SPI)
Output Type	Current	Current	Current	Current	Current	Current	Current	Current	Current	Current
Voltage Reference	External	External	External	External	External	External	External	External	External	External
Minimum Single Supply Voltage (V)	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7
Typical Single Supply Voltage (V)	5	5	5	5	5	5	5	5	5	5
Maximum Single Supply Voltage (V)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Power Supply Type	Single	Single	Single	Single	Single	Single	Single	Single	Single	Single
Maximum Power Dissipation (mW)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)	0.0015(Typ)
Integral Nonlinearity Error	±1LSB	±1LSB	±1LSB	±1LSB	±2LSB	±2LSB	±2LSB	±1LSB	±1LSB	±1LSB
Full Scale Error	±12LSB	±12LSB	±12LSB	±12LSB	±20LSB	±20LSB	±20LSB	±2LSB	±2LSB	±2LSB
Digital Supply Support	No	No	No	No	No	No	No	No	No	No
Minimum Operating Temperature (°C)	-40	-	-	-40	-	-40	-40	-	-40	-40
Maximum Operating Temperature (°C)	85	70	70	85	70	85	85	70	85	85
Packaging	Tube	Tube	Tape and Reel	Tape and Reel	Tube	Tube	Tape and Reel	Tube	Tube	Tape and Reel
Pin Count	52	52	52	52	52	52	52	52	52	52
Standard Package Name	QFN	QFN	QFN	QFN	QFN	QFN	QFN	QFN	QFN	QFN
Supplier Package	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP
Mounting	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Height	0.95(Max)	0.95(Max)	0.75(Max)	0.95(Max)	0.95(Max)	0.95(Max)	0.95(Max)	0.95(Max)	0.95(Max)	0.95(Max)
Package Length	8	8	8	8	8	8	8	8	8	8
Package Width	7	7	7	7	7	7	7	7	7	7
PCB changed	52	52	52	52	52	52	52	52	52	52
Lead Shape	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead

LTC2754AIUKG-16#PBF

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