Data Sheet

LTC2686

SPECIFICATIONS

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Rev. A | 4 of 45

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

5 V, V1+ = V2+ = 15 V, V− = −15 V, VREF = 4.096 V, VOUT unloaded, unless otherwise specified. For ±15 V range, V1+ = V2+ = 18 V, V− = −18 V.

Table 1.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

DC PERFORMANCE

LTC2686-16

Resolution

16

Bits

Monotonicity

All ranges1

16

Bits

Differential Nonlinearity

DNL

All ranges1

±1

LSB

Integral Nonlinearity

INL

All ranges1

±3

LSB

LTC2686-12

Resolution

12

Bits

Monotonicity

All ranges1

12

Bits

Differential Nonlinearity

DNL

All ranges1

±0.25

LSB

Integral Nonlinearity

INL

All ranges1

±0.75

LSB

Unipolar Offset Error

VOS

0 V to 5 V range

±0.5

±2

mV

0 V to 10 V range

±1

±4

mV

VOS Temperature Coefficient

All unipolar ranges

1

ppm/°C

Single-Supply Zero-Scale Error

ZSE

All unipolar ranges, V− = GND

2

4

mV

Bipolar Zero Error

BZE

All bipolar ranges

±0.04

% FSR2

BZE Temperature Coefficient

All bipolar ranges

2

ppm/°C

Gain Error

GE

All ranges, external reference

±0.08

% FSR2

Gain Temperature Coefficient

2

ppm/°C

Output Voltage Swing

VOUT

To V− (unloaded)

V− + 0.004

V

To Vx+ (unloaded)

Vx+ − 0.004

V

To V− (−55 mA ≤ output current (IOUT) ≤

+55 mA), ±15 V range

V− + 2.0

V

To Vx+ (−55 mA ≤ IOUT ≤ +55 mA), ±15 V

range

Vx+ − 2.0

V

Power Supply Rejection

PSR

VCC = 5 V ± 5%

−90

dB

Vx+/V− = 15 V ± 5%

−110

dB

Load Regulation

−55 mA ≤ IOUT ≤ +55 mA, Vx+ = +17.2 V, V− =

−17.2 V, ±15 V range

10

50

μV/mA

DC Crosstalk3, 0 V to 5 V Range

Due to full-scale output change

±2

μV

Due to load current change

±1

μV/mA

Due to powering down (per channel)

±4

μV

Vx+/V− Short-Circuit Output Current4, ±15 V

Output Range

ISC

Negative full scale, forcing output to GND

−115

mA

Positive full scale, forcing output to GND

115

mA

REFERENCE

Reference Output Voltage5

4.094

4.096

4.098

V

TA = TMIN to TMAX

4.092

4.096

4.100

V

Reference Temperature Coefficient6

LFCSP

±2

±10

ppm/°C

WLCSP

±5

ppm/°C

Line Regulation

VCC ± 5%

−100

dB

Short-Circuit Current

Forcing output to GND

0.1

mA

REFCOMP Pin Short-Circuit Current

Forcing output to GND

10

μA

Load Regulation

IOUT = 1 μA

320

mV/mA

Output Voltage Noise Density

REFCOMP, capacitor (CREFCOMP) = REF

capacitor (CREF) = 0.1 μF, at f = 10 kHz

32

nV/√Hz