Data Sheet

LTC2672

SPECIFICATIONS

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Rev. B | 4 of 27

All specifications apply over the full operating TJ range, unless otherwise noted. Typical values are at TJ = 25°C, VCC = IOVCC = 5 V, V− = –3.3

V, VDDx = 5 V, FSADJ = VCC, and reference output voltage (VREF) = 1.25 V external, unless otherwise specified.

Table 1.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

DC PERFORMANCE, LTC2672-16

Resolution

16

Bits

Monotonicity

All ranges1

16

Bits

Differential Nonlinearity

DNL

All ranges1

−1

+0.45

+1

LSB

Integral Nonlinearity

INL

All ranges1

−64

+12

+64

LSB

Current Offset Error

IOS

All current ranges1

−0.4

+0.1

+0.4

%FSR

IOS Temperature Coefficient

All current ranges

10

ppm/°C

Gain Error

GE2

300 mA and 200 mA output current ranges

−0.9

+0.3

+0.9

%FSR

100 mA, 50 mA, and 25 mA output current ranges,

LFCSP model

−1.2

+0.4

+1.2

%FSR

100 mA, 50 mA, and 25 mA output current ranges,

WLCSP model

−1.4

+0.4

+1.4

%FSR

12.5 mA, 6.25 mA, and 3.125 mA output current ranges

LFCSP model

−1.5

+0.7

+1.5

%FSR

12.5 mA, 6.25 mA, and 3.125 mA output current ranges,

WLCSP model

−2.0

+0.7

+2.0

%FSR

Gain Temperature Coefficient

FSADJ = VCC

30

ppm/°C

Total Unadjusted Error

TUE 2

300 mA and 200 mA output current ranges

−1.4

+0.4

+1.4

%FSR

100 mA, 50 mA, and 25 mA output current ranges,

LFCSP model

−1.7

+0.5

+1.7

%FSR

100 mA, 50 mA, and 25 mA output current ranges,

WLCSP model

−1.9

+0.5

+1.9

%FSR

12.5 mA, 6.25 mA, and 3.125 mA output current ranges,

LFCSP model

−2

+0.8

+2

%FSR

12.5 mA, 6.25 mA, and 3.125 mA output current ranges,

WLCSP model

−2.5

+0.8

+2.5

%FSR

Power Supply Rejection

PSR

Range = 100 mA, OUTx current (IOUTx) = 50 mA

VCC = 4.75 V to 5.25 V

0.5

LSB

VDDx = 2.85 V to 3.15 V

0.4

LSB

VDDx = 4.75 V to 5.25 V

0.7

LSB

V− = −3.25 V to −2.75 V

0.6

LSB

DC Crosstalk3

Result of a 200 mW change in dissipated power

0.1

%FSR

Dropout Voltage (VDDx − VOUTx4)

VDROPOUT

200 mA range, (VDDx − V−) = 4.75 V

0.45

0.6

V

200 mA range, (VDDx – V–) = 2.85 V

0.5

0.65

V

300 mA range, (VDDx – V–) = 4.75 V

0.75

V

300 mA range, (VDDx – V–) = 2.85 V

0.85

1.15

V

Off Mode Output Leakage Current5

800 Ω load to GND

−1

+0.1

+1

μA

OUTx Switch to V− Resistance

RPULLDOWN Span code = 1000b, sinking 80 mA

8

12

Ω

DC PERFORMANCE, LTC2672-12

Resolution

12

Bits

Monotonicity

All ranges1

12

Bits

Differential Nonlinearity

DNL

All ranges1

−0.5

+0.03

+0.5

LSB

Integral Nonlinearity

INL

All ranges1

−4

+0.8

+4

LSB

Current Offset Error

IOS

All current ranges1

−0.4

+0.1

+0.4

%FSR

IOS Temperature Coefficient

All current ranges

10

ppm/°C

Gain Error

GE2

300 mA and 200 mA output current ranges

−0.9

+0.3

+0.9

%FSR

100 mA, 50 mA, and 25 mA output current ranges

−1.2

+0.4

+1.2

%FSR