Datasheet

LTC2655
5
2655f
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 2.7V to 5.5V, V
OUT
unloaded unless otherwise specifi ed.
LTC2655B-L16/ LTC2655-L12 (Internal Reference=1.25V)
SYMBOL PARAMETER CONDITIONS
LTC2655-12 LTC2655B-16
UNITSMIN 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
V
CC
= 3V ±10%, Internal Reference,
Mid-Scale, –7.5mA ≤ I
OUT
≤ 5mA
l
0.06 0.25 1 4 LSB/mA
ZSE Zero-Scale Error
l
13 13 mV
V
OS
Offset Error V
REF
= 1.25V (Note 4)
l
±1 ±2 ±1 ±2 mV
V
OS
Temperature Coeffi cient 5 5 µV/°C
GE Gain Error
l
±0.02 ±0.1 ±0.02 ±0.1 %FSR
Gain Temperature Coeffi cient 1 1 ppm/°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
DAC Output Span Internal Reference
External Reference = V
EXTREF
0 to 2.5
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
V
CC
= 3V ±10%, Internal Reference, Mid-Scale,
–7.5mA ≤ I
OUT
≤ 7.5mA
l
l
0.04
0.04
0.15
0.15


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
= 2.8V
Code: Zero-Scale; Forcing Output to V
CC
Code: Full-Scale; Forcing Output to GND
l
l
20
20
65
65
mA
mA
V
CC
= 2.7V V
EXTREF
= 1.4V
Code: Zero-Scale; Forcing Output to V
CC
Code: Full-Scale; Forcing Output to GND
l
l
10
10
45
45
mA
mA