Linear Technology LTC2471 - Selectable 208sps/833sps, 16-Bit I2C Delta Sigma ADCs with 10ppm/C Max Precision Reference (Req DC590B) Linear DC1718A 데이터 시트
제품 코드
DC1718A
LTC2471/LTC2473
3
24713fb
elecTrical characTerisTics
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution
16
Bits
Integral Nonlinearity
Output Rate 208sps (Note 4)
Output Rate 833sps (Note 4)
l
l
2
8
8.5
16
LSB
LSB
Offset Error
l
±1
±2.5
mV
Offset Error Drift
0.05
LSB/°C
Gain Error
l
±0.01
±0.25 % of FS
Gain Error Drift
l
0.15
LSB/°C
Transition Noise
3
µV
RMS
Power Supply Rejection DC
80
dB
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
analog inpuTs
The
l
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
Supply Voltage
l
2.7
5.5
V
I
CC
Supply Current
Conversion
Conversion
Nap
Sleep
LTC2473 (Note 8)
LTC2471 (Note 8)
(Note 8)
(Note 8)
l
l
l
l
3.5
2.5
800
0.2
5
4
1500
2
mA
mA
µA
µA
The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
IN
+
Positive Input Voltage Range
LTC2473
l
0
V
REF
V
V
IN
–
Negative Input Voltage Range
LTC2473
l
0
V
REF
V
V
IN
Input Voltage Range
LTC2471
l
0
V
REF
V
V
OR
+
, V
UR
+
Overrange/Underrange Voltage, IN
+
V
IN
–
= 0.625V
8
LSB
V
OR
–
, V
UR
–
Overrange/Underrange Voltage, IN–
V
IN
+
= 0.625V
8
LSB
C
IN
IN
+
, IN
–
, IN Sampling Capacitance
0.35
pF
I
DC_LEAK(IN+, IN–, IN)
IN
+
, IN
–
DC Leakage Current (LTC2473)
IN DC Leakage Current (LTC2471)
V
IN
= GND (Note 8)
V
IN
= V
CC
(Note 8)
l
l
–10
–10
±1
±1
10
10
nA
nA
I
CONV
Input Sampling Current (Notes 5, 8)
50
nA
V
REF
Reference Output Voltage
l
1.247
1.25
1.253
V
Reference Voltage Coefficient
(Note 9)
C-Grade
I-Grade
l
±2
±5
±10
ppm/°C
ppm/°C
Reference Line Regulation
2.7V ≤ V
CC
≤ 5.5V
–90
dB
Reference Short-Circuit Current
V
CC
= 5.5, Forcing Output to GND (Note 8)
l
35
mA
COMP Pin Short-Circuit Current
V
CC
= 5.5, Forcing Output to GND (Note 8)
l
200
µA
Reference Load Regulation
2.7V ≤ V
CC
≤ 5.5V, I
OUT
= 100μA Sourcing
3.5
mV/mA
Reference Output Noise Density
C
COMP
= 0.1μF, C
REFOUT
= 0.1μF, At f =
1ksps
30
nV/√Hz
power requireMenTs