Datasheet
LTC2637
8
2637fb
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
= 4.5V to 5.5V, V
OUT
unloaded unless otherwise specifi ed.
LTC2637-HMI12/ LTC2637-HMI10/ LTC2637-HMI8/ LTC2637-HMX12/ LTC2637-HMX10/ LTC2637-HMX8/ LTC2637-HZ12/
LTC2637-HZ10/ LTC2637-HZ8 (V
FS
=4.096V)
SYMBOL PARAMETER CONDITIONS
LTC2637-8 LTC2637-10 LTC2637-12
UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX
Resolution
l
8 10 12 Bits
Monotonicity V
CC
= 5V, Internal Reference (Note 4)
l
8 10 12 Bits
DNL Differential
Nonlinearity
V
CC
= 5V, Internal Reference (Note 4)
l
±0.5 ±0.5 ±1 LSB
INL Integral Nonlinearity V
CC
= 5V, Internal Reference (Note 4)
l
±0.05 ±0.5 ±0.2 ±1 ±1 ±2.5 LSB
ZSE Zero-Scale Error V
CC
= 5V, Internal Reference, Code = 0
l
0.5 5 0.5 5 0.5 5 mV
V
OS
Offset Error V
CC
= 5V, Internal Reference (Note 5)
l
±0.5 ±5 ±0.5 ±5 ±0.5 ±5 mV
V
OSTC
V
OS
Temperature
Coeffi cient
V
CC
= 5V, Internal Reference ±10 ±10 ±10 µV/°C
GE Gain Error V
CC
= 5V, Internal Reference
l
±0.2 ±0.8 ±0.2 ±0.8 ±0.2 ±0.8 %FSR
GE
TC
Gain Temperature
Coeffi cient
V
CC
= 5V, Internal Reference (Note 10)
C-Grade
I-Grade
H-Grade
10
10
10
10
10
10
10
10
10
ppm/°C
ppm/°C
ppm/°C
Load
Regulation
V
CC
= 5V±10%, (Note 15)
Internal Reference, Mid-Scale,
–10mA ≤ I
OUT
≤ 10mA
l 0.006 0.01 0.022 0.04 0.09 0.16 LSB/mA
R
OUT
DC Output
Impedance
V
CC
= 5V±10%, (Note 15)
Internal Reference, Mid-Scale,
–10mA ≤ I
OUT
≤ 10mA
l
0.09 0.156 0.09 0.156 0.09 0.156
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
DAC Output Span External Reference
Internal Reference
0 to V
REF
0 to 4.096
V
V
PSR Power Supply Rejection V
CC
= 5V±10% –80 dB
I
SC
Short Circuit Output Current (Note 6)
Sinking
Sourcing
V
FS
= V
CC
= 5.5V
Zero-Scale; V
OUT
Shorted to V
CC
Full-Scale; V
OUT
Shorted to GND
l
l
27
–28
48
–48
mA
mA
Power Supply
V
CC
Positive Supply Voltage For Specifi ed Performance
l
4.5 5.5 V
I
CC
Supply Current (Note 7) V
CC
= 5V, V
REF
= 4.096V, External Reference
V
CC
= 5V, Internal Reference
l
l
1.0
1.1
1.3
1.5
mA
mA
I
SD
Supply Current in Power-Down Mode
(Note 7)
V
CC
= 5V, C-Grade, I-Grade
V
CC
= 5V, H-Grade
l
l
1
1
20
30
µA
µA
Reference Input
Input Voltage Range
l
1V
CC
V
Resistance
l
120 160 200 k
Capacitance 12 pF
I
REF
Reference Current, Power-Down Mode DAC Powered Down
l
0.005 1.5 µA
Reference Output
Output Voltage
l
2.032 2.048 2.064 V
Reference Temperature Coeffi cient
±10
ppm/°C