Datasheet

LTC2656
7
2656fa
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 4.5V to 5.5V, V
OUT
unloaded unless otherwise specified.
LTC2656B-H16/LTC2656-H12 (internal reference = 2.048V)
SYMBOL PARAMETER CONDITIONS
LTC2656-H12 LTC2656B-H16
UNITS
MIN TYP MAX MIN TYP MAX
DC Performance
Resolution
l
12 16 Bits
Monotonicity (Note 3)
l
12 16 Bits
DNL Differential Nonlinearity (Note 3)
l
±0.1 ±0.5 ±0.3 ±1 LSB
INL Integral Nonlinearity (Note 3) V
CC
= 5.5V, V
REF
= 2.5V
l
±0.5 ±1 ±2 ±4 LSB
Load Regulation V
CC
= 5V ±10%, Internal Reference, Mid-Scale,
–15mA ≤ I
OUT
≤ 15mA
l
0.04 0.125 0.6 2 LSB/mA
ZSE Zero-Scale Error
l
1 3 1 3 mV
V
OS
Offset Error V
REF
= 2.048V (Note 4)
l
±1 ±2 ±1 ±2 mV
V
OS
Temperature Coefficient 2 2 µV/°C
GE Gain Error
l
±0.02 ±0.1 ±0.02 ±0.1 %FSR
Gain Temperature Coefficient 1 1 ppm/°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
DAC Output Span Internal Reference
External Reference = V
EXTREF
0 to 4.096
0to2•V
EXTREF
V
V
PSR Power Supply Rejection V
CC
±10% –80 dB
R
OUT
DC Output Impedance V
CC
= 5V ±10%, Internal Reference, Mid-Scale,
–15mA ≤ I
OUT
≤ 15mA
l
0.04 0.15 Ω
DC Crosstalk (Note 5) Due to Full-Scale Output Change
Due to Load Current Change
Due to Powering Down (per Channel)
±1.5
±2
±1
µV
µV/mA
µV
I
SC
Short-Circuit Output Current
(Note 6)
V
CC
= 5.5V, V
EXTREF
= 2.75V
Code: Zero-Scale, Forcing Output to V
CC
Code: Full-Scale, Forcing Output to GND
l
l
20
20
65
65
mA
mA
Reference
Reference Output Voltage 2.044 2.048 2.052 V
Reference Temperature Coefficient C-Grade (Note 7)
I-Grade (Note 7)
±2
±2
±10 ppm/°C
ppm/°C
Reference Line Regulation V
CC
±10% –80 dB
Reference Short-Circuit Current V
CC
= 5.5V, Forcing Output to GND
l
3 5 mA
REFCOMP Pin Short-Circuit Current V
CC
= 5.5V, Forcing Output to GND
l
60 200 µA
Reference Load Regulation V
CC
= 5V ±10%, I
OUT
= 100µA Sourcing 40 mV/mA
Reference Output Voltage Noise
Density
C
REFCOMP
= C
REFIN/OUT
= 0.1µF at f = 1kHz 35 nV/√Hz
Reference Input Range External Reference Mode (Note 13)
l
0.5 V
CC
/2 V
Reference Input Current
l
0.001 1 µA
Reference Input Capacitance
(Note 9)
l
40 pF