Linear Technology DC1397A-A - LTC2656-L16 Octal SPI 16-bit Voltage Output DAC with 1.25V Reference, req DC590 DC1397A-A DC1397A-A Data Sheet
Product codes
DC1397A-A
LTC2656
5
2656fa
ELECTRICAL CHARACTERISTICS
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
l
0.04
0.15
Ω
V
CC
= 3V ±10%, Internal Reference, Mid-Scale,
–7.5mA ≤ I
OUT
≤ 7.5mA
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
V
CC
= 2.7V, V
EXTREF
= 1.35V
Code: Zero-Scale, Forcing Output to V
CC
Code: Full-Scale, Forcing Output to GND
l
l
10
10
40
40
mA
mA
Reference
Reference Output Voltage
1.248
1.25
1.252
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
= 3V ±10% or 5V ±10%, I
OUT
= 100µA
Sourcing
40
mV/mA
Reference Output Voltage Noise
Density
C
REFCOMP
= C
REFIN/OUT
= 0.1µF at f = 1kHz
30
nV/√Hz
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 2.7V to 5.5V, V
OUT
unloaded unless otherwise specified.
LTC2656B-L16/LTC2656C-L16/LTC2656-L12 (internal reference = 1.25V)
SYMBOL PARAMETER
CONDITIONS
LTC2656-L12
LTC2656B-L16/
LTC2656C-L16
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)
LTC2656B-L16: V
CC
= 5.5V, V
REF
= 2.5V
LTC2656C-L16: V
CC
= 5.5V, V
REF
= 2.5V
l
l
±0.5
±1
±2
±6
±4
±12
LSB
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
≤ 7.5mA
l
0.06 0.25
1
4
LSB/mA
ZSE
Zero-Scale Error
l
1
3
1
3
mV
V
OS
Offset Error
V
REF
= 1.25V (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