Linear Technology LTC2754-16: 16-bit, Quad Serial, SoftSpan, 1LSB INL Iout DAC, req. DC590 DC1546A DC1546A Scheda Tecnica

LTC2754

1

2754f

Quad 12-/16-Bit

SoftSpan I

OUT

 DACs

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 verifi ed 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. 

n

  Program or Pin-Strap Six Output Ranges

n

  Maximum 16-Bit INL Error: ±1 LSB over 

n

  Guaranteed Monotonic over Temperature

n

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

n

  Serial Readback of All On-Chip Registers

n

  Low 1μA Maximum Supply Current

n

  2.7V to 5.5V Single-Supply Operation

n

  16-Bit Settling Time: 2μs

n

  Voltage-Controlled Offset and Gain Trims

n

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

Output Range

n

 52-Pin 7mm 

× 8mm QFN Package

■

  High Resolution Offset and Gain Adjustment

■

  Process Control and Industrial Automation

■

  Automatic Test Equipment

■

  Data Acquisition Systems

LTC2754-16

–

+

+

–

DAC D

DAC A

V

REFA

V

DD

V

OUTA

V

OUTD

R

INA

REF

A

V

REFD

REFD

R

OFSA

GND

M-SP

AN

R

OFSD

R

COMD

GE

ADJD

R

COMA

R

IND

V

OSADJA

V

OSADJD

I

OUT2A

I

OUT1A

I

OUT1D

I

OUT2D

R

FBA

R

FBD

GE

ADJA

–

+

SPI with READBACK

+

–

–

+

+

–

DAC C

DAC B

V

REFB

V

OUTB

V

OUTC

R

INB

REFB

V

REFC

REFC

R

OFSB

R

OFSC

R

COMC

GE

ADJC

R

COMB

R

INC

V

OSADJB

V

OSADJC

ALL AMPLIFIERS 1/2 LT1469

I

OUT2B

I

OUT1B

I

OUT1C

I

OUT2C

R

FBB

R

FBC

GE

ADJB

–

+

+

–

2754 TA01

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.

CODE

0

–1.0

INL (LSB)

–0.8

–0.4

–0.2

0

1.0

0.4

16384

32768

2754 G01

–0.6

0.6

0.8

0.2

49152

65535

V

DD

 = 5V

V

REF

 = 5V

±10V RANGE