Linear Technology LTC2461: 16-bit I²C Single-Ended Delta Sigma ADC with 10ppm max Internal Reference, req DC590 DC1491A DC1491A 데이터 시트
제품 코드
DC1491A
LTC2461/LTC2463
3
24613fa
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
(Note 3)
l
16
Bits
Integral Nonlinearity
(Note 4)
l
1
8
LSB
Offset Error
LTC2461, 30Hz, LTC2463
LTC2461, 60Hz
l
2
5
15
LSB
LSB
Offset Error Drift
0.02
LSB/°C
Gain Error
Includes Contributions of ADC and Internal Reference
l
±0.01
±0.25 % of FS
Gain Error Drift
Includes Contributions of ADC and Internal Reference
C-Grade
I-Grade
l
±2
±5
±10
ppm/°C
ppm/°C
Transition Noise
2.2
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
Nap
Sleep
l
l
l
1.5
800
0.2
2.5
1500
2
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
LTC2463
l
0
V
REF
V
V
IN
–
Negative Input Voltage Range
LTC2463
l
0
V
REF
V
V
IN
Input Voltage Range
LTC2461
l
0
V
REF
V
V
OR
+
, V
UR
+
Overrange/Underrange Voltage, IN
+
V
IN
–
= 0.625V (See Figure 3)
8
LSB
V
OR
–
, V
UR
–
Overrange/Underrange Voltage, IN–
V
IN
+
= 0.625V (See Figure 3)
8
LSB
C
IN
IN
+
, IN
–
, IN Sampling Capacitance
0.35
pF
I
DC_LEAK(IN+, IN–, IN)
IN
+
, IN
–
DC Leakage Current (LTC2463)
IN DC Leakage Current (LTC2461)
V
IN
= GND or V
CC
(Note 8)
V
IN
= GND or V
CC
(Note 8)
l
l
–10
–10
1
1
10
10
nA
nA
I
CONV
Input Sampling Current (Note 5)
50
nA
V
REF
REFOUT Output Voltage
l
1.247
1.25
1.253
V
REFOUT Voltage Temperature 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 REFOUT to GND
l
35
mA
COMP Pin Short Circuit Current
V
CC
= 5.5, Forcing REFOUT to GND
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 = 1kHz
30
nV/√Hz
POWER REQUIREMENTS