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LTC2641/LTC2642

26412f

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Reference Input

VREF

Reference Input Range

●

2.0

VDD

RREF

Reference Input Resistance (Note 5)

Unipolar Mode (LTC2641)

Bipolar Mode (LTC2642)

●

8.5

14.8

11.4

Dynamic Performance—VOUT

Voltage Output Slew Rate

Measured from 10% to 90%

V/μs

Output Settling Time

To ±0.5LSB of FS

μs

DAC Glitch Impulse

Major Carry Transition

0.5

nV•s

Digital Feedthrough

Code = 0000hex; NCS = VDD;

SCLK, DIN 0V to VDD Levels

0.2

nV•s

Dynamic Performance—Reference Input

Reference –3dB Bandwidth

Code = FFFFhex

1.3

MHz

Reference Feedthrough

Code = 0000hex, VREF = 1VP-P at 100kHz

mVP-P

SNR

Signal-to-Noise Ratio

CIN(REF)

Reference Input Capacitance

Code = 0000hex

Code = FFFFhex

120

Digital Inputs

VIH

Digital Input High Voltage

VCC = 3.6V to 5.5V

VCC = 2.7V to 3.6V

●

2.4

2.0

VIL

Digital Input Low Voltage

VCC = 4.5V to 5.5V

VCC = 2.7V to 4.5V

●

0.8

0.6

The

● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VDD = 3V or 5V, VREF = 2.5V, CL = 10pF, GND = 0, RL = ∞ unless

otherwise specified.

SYMBOL PARAMETER

CONDITIONS

LTC2641-12

LTC2642-12

LTC2641-14

LTC2642-14

LTC2641-16

LTC2642-16

UNITS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

Static Peformance

Resolution

●

Bits

Monotonicity

●

Bits

DNL

Differential Nonlinearity

(Note 2)

●

±0.5

±1

±0.5

±1

LSB

INL

Integral Nonlinearity

(Note 2)

●

±0.5

±1

±0.5

±2

LSB

ZSE

Zero Code Offset Error

Code = 0

●

122

LSB

ZSTC

Zero Code Tempco

±0.05

ppm/°C

Gain Error

●

±0.5

±2

±1

±4

±2

±5

LSB

GETC

Gain Error Tempco

±0.1

ppm/°C

ROUT

DAC Output Resistance

(Note 4)

6.2

Bipolar Resistor Matching

(LTC2642) RFB/RINV

111

Ratio Error (Note 7)

●

±0.1

±0.03

±0.015

BZE

Bipolar Zero Offset Error

(LTC2642)

●

±0.5

±2

±0.5

±4

±2

±5

LSB

BZSTC

Bipolar Zero Tempco

(LTC2642)

±0.1

ppm/°C

PSR

Power Supply Rejection

ΔVDD = ±10%

●

±0.5

±1

LSB

The

● denotes the speciﬁcations which apply over the full operating temperature range, otherwise speciﬁcations are at TA = 25°C.

VDD = 3V or 5V, VREF = 2.5V, CL = 10pF, GND = 0, RL = ∞ unless otherwise specified.

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