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LTC1454

Dual 12-Bit Rail-to-Rail Micropower DACs

Linear Technology 

LTC1454/LTC1454L

ABSOLUTE MAXIMUM RATINGS

VCC to GND .............................................. – 0.5V to 7.5V

Logic Inputs to GND ................................ – 0.5V to 7.5V

VOUT A , VOUT B, X1/X2 A ,

X1/X2 B ..................................... – 0.5V to VCC + 0.5V

REFHI A , REFHI B, REFLO ............. – 0.5V to VCC + 0.5V

Maximum Junction Temperature .......................... 125°C

Operating Temperature Range

LTC1454C/LTC1454LC ............................ 0°C to 70°C

LTC1454I/LTC1454LI ........................ – 40°C to 85°C

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

Lead Temperature (Soldering, 10 sec)................. 300°C

PACKAGE/ORDER I FOR ATIO

TOP VIEW

X1/X2 B 1

CLR 2

CLK 3

DIN 4

CS/LD 5

DOUT 6

X1/X2 A 7

VOUT A 8

16 VOUT B

15 VCC

14 REFHI B

13 GND

12 REFLO

11 REFHI A

10 REFOUT

9 VCC

N PACKAGE

S PACKAGE

16-LEAD PDIP 16-LEAD PLASTIC SO

TJMAX = 125°C, θJA = 100°C/W (N)

TJMAX = 125°C, θJA = 150°C/W (S)

Consult factory for Military grade parts.

ORDER PART

NUMBER

LTC1454CN

LTC1454IN

LTC1454CS

LTC1454IS

LTC1454LCN

LTC1454LIN

LTC1454LCS

LTC1454LIS

ELECTRICAL CHARACTERISTICS

VCC = 4.5V to 5.5V (LTC1454), 2.7V to 5.5V (LTC1454L), X1/X2 = REFLO = GND, REFHI = REFOUT, VOUT and REFOUT unloaded,

TA = TMIN to TMAX, unless otherwise noted.

SYMBOL PARAMETER

CONDITIONS

MIN TYP MAX

UNITS

DAC

Resolution

q

12

Bits

DNL

INL

VOS

VOSTC

Differential Nonlinearity

Integral Nonlinearity

Offset Error

Offset Error Temperature

Coefficient

Guaranteed Monotonic (Note 1)

TA = 25°C

(Note 1)

TA = 25°C

q

± 0.5

LSB

±2.0 ±4.0

LSB

q

±2.5 ±4.5

LSB

±2.0 ±12

mV

q

±4.0 ±18

mV

±15

µV/°C

VFS

Full-Scale Voltage

When Using Internal Reference, LTC1454, TA = 25°C

4.065 4.095 4.125

V

LTC1454

q

4.045 4.095 4.145

V

When Using Internal Reference, LTC1454L, TA = 25°C

2.470 2.500 2.530

V

LTC1454L

q

2.460 2.500 2.540

V

VFSTC

Full-Scale Voltage

Temperature Coefficient

When Using Internal Reference

± 24

ppm/°C

Reference

Reference Output Voltage

LTC1454

LTC1454L

q

2.008 2.048 2.088

V

q

1.195 1.220 1.245

V

Reference Output

Temperature Coefficient

±20

ppm/°C

Reference Line Regulation

Reference Load Regulation

0 ≤ IOUT ≤ 100µA, LTC1454

LTC1454L

q

0.7 ±2.0

LSB / V

q

0.2

1.5

LSB

q

0.6

3.0

LSB

Reference Input Range

Reference Input Resistance

Reference Input Capacitance

VREFHI ≤ VCC – 1.5V

VCC/ 2

V

q

15

24

40

kΩ

15

pF

Short-Circuit Current

REFOUT Shorted to GND

q

40

120

mA

2

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