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LTC2486CDE#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36
LTC2486
4
2486fe
For more information www.linear.com/LTC2486
DIGITAL INPUTS AND DIGITAL OUTPUTS
The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
ANALOG INPUT AND REFERENCE
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
IN
+
Absolute/Common Mode IN
+
Voltage (IN
+
Corresponds to
the Selected Positive Input Channel or COM)
GND – 0.3V V
CC
+ 0.3V V
IN
–
Absolute/Common Mode IN
–
Voltage (IN
–
Corresponds to
the Selected Negative Input Channel or COM)
GND – 0.3V V
CC
+ 0.3V V
V
IN
Input Voltage Range (IN
+
– IN
–
) Differential/Single-Ended
l
–FS +FS V
FS Full Scale of the Input (IN
+
– IN
–
) Differential/Single-Ended
l
0.5V
REF
/Gain V
LSB Least Significant Bit of the Output Code
l
FS/2
16
REF
+
Absolute/Common Mode REF
+
Voltage
l
0.1 V
CC
V
REF
–
Absolute/Common Mode REF
–
Voltage
l
GND REF
+
– 0.1V V
V
REF
Reference Voltage Range (REF
+
– REF
–
)
l
0.1 V
CC
V
C
S(IN+)
IN
+
Sampling Capacitance 11 pF
C
S(IN–)
IN
–
Sampling Capacitance 11 pF
C
S(VREF)
V
REF
Sampling Capacitance 11 pF
I
DC_LEAK(IN
+
)
IN
+
DC Leakage Current Sleep Mode, IN
+
= GND
l
–10 1 10 nA
I
DC_LEAK(IN
–
)
IN
–
DC Leakage Current Sleep Mode, IN
–
= GND
l
–10 1 10 nA
I
DC_LEAK(REF
+
)
REF
+
DC Leakage Current Sleep Mode, REF
+
= V
CC
l
–100 1 100 nA
I
DC_LEAK(REF
–
)
REF
–
DC Leakage Current Sleep Mode, REF
–
= GND
l
–100 1 100 nA
t
OPEN
MUX Break-Before-Make 50 ns
QIRR MUX Off Isolation V
IN
= 2V
P-P
DC to 1.8MHz 120 dB
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage (CS, f
O
, SDI) 2.7V ≤ V
CC
≤ 5.5V (Note 18)
l
V
CC
– 0.5 V
V
IL
Low Level Input Voltage (CS, f
O
, SDI) 2.7V ≤ V
CC
≤ 5.5V
l
0.5 V
V
IH
High Level Input Voltage (SCK) 2.7V ≤ V
CC
≤ 5.5V (Notes 10, 15)
l
V
CC
– 0.5 V
V
IL
Low Level Input Voltage (SCK) 2.7V ≤ V
CC
≤ 5.5V (Notes 10, 15)
l
0.5 V
I
IN
Digital Input Current (CS, f
O
, SDI) 0V ≤ V
IN
≤ V
CC
l
–10 10 µA
I
IN
Digital Input Current (SCK) 0V ≤ V
IN
≤ V
CC
(Notes 10, 15)
l
–10 10 µA
C
IN
Digital Input Capacitance (CS, f
O
, SDI) 10 pF
C
IN
Digital Input Capacitance (SCK) (Notes 10, 15) 10 pF
V
OH
High Level Output Voltage (SDO) I
O
= –800µA
l
V
CC
– 0.5 V
V
OL
Low Level Output Voltage (SDO) I
O
= 1.6mA
l
0.4 V
V
OH
High Level Output Voltage (SCK) I
O
= –800µA (Notes 10, 17)
l
V
CC
– 0.5 V
V
OL
Low Level Output Voltage (SCK) I
O
= 1.6mA (Notes 10, 17)
l
0.4 V
I
OZ
Hi-Z Output Leakage (SDO)
l
–10 10 µA
POWER REQUIREMENTS
The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
l
2.7 5.5 V
I
CC
Supply Current Conversion Current (Note 12)
Temperature Measurement (Note 12)
Sleep Mode (Note 12)
l
l
l
160
200
1
275
300
2
µA
µA
µA
LTC2486
5
2486fe
For more information www.linear.com/LTC2486
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
f
EOSC
External Oscillator Frequency Range (Note 16)
l
10 1000 kHz
t
HEO
External Oscillator High Period
l
0.125 50 µs
t
LEO
External Oscillator Low Period
l
0.125 50 µs
t
CONV_1
Conversion Time for 1x Speed Mode 50Hz Mode
60Hz Mode
Simultaneous 50/60Hz Mode
External Oscillator
l
l
l
157.2
131
144.1
160.3
133.6
146.9
41036/f
EOSC
(in kHz)
163.5
136.3
149.9
ms
ms
ms
ms
t
CONV_2
Conversion Time for 2x Speed Mode 50Hz Mode
60Hz Mode
Simultaneous 50/60Hz Mode
External Oscillator
l
l
l
78.7
65.6
72.2
80.3
66.9
73.6
20556/f
EOSC
(in kHz)
81.9
68.2
75.1
ms
ms
ms
ms
f
ISCK
Internal SCK Frequency Internal Oscillator (Notes 10, 17)
External Oscillator (Notes 10, 11, 15)
38.4
f
EOSC
/8
kHz
kHz
D
ISCK
Internal SCK Duty Cycle (Notes 10, 17)
l
45 55 %
f
ESCK
External SCK Frequency Range (Notes 10, 11, 15)
l
4000 kHz
t
LESCK
External SCK Low Period (Notes 10, 11, 15)
l
125 ns
t
HESCK
External SCK High Period (Notes 10, 11, 15)
l
125 ns
t
DOUT_ISCK
Internal SCK 24-Bit Data Output Time Internal Oscillator (Notes 10, 17)
External Oscillator (Notes 10, 11, 15)
l
0.61 0.625
192/f
EOSC
(in kHz)
0.64 ms
ms
t
DOUT_ESCK
External SCK 24-Bit Data Output Time (Notes 10, 11, 15)
24/f
ESCK
(in kHz) ms
t
1
CS↓ to SDO Low
l
0 200 ns
t
2
CS↑ to SDO High Z
l
0 200 ns
t
3
CS↓ to SCK↓
Internal SCK Mode
l
0 200 ns
t
4
CS↓ to SCK↑
External SCK Mode
l
50 ns
t
KQMAX
SCK↓ to SDO Valid
l
200 ns
t
KQMIN
SDO Hold After SCK↓
(Note 5)
l
15 ns
t
5
SCK Set-Up Before CS↓
l
50 ns
t
7
SDI Setup Before SCK↑
(Note 5)
l
100 ns
t
8
SDI Hold After SCK↑
(Note 5)
l
100 ns
DIGITAL INPUTS AND DIGITAL OUTPUTS
The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to GND.
Note 3: Unless otherwise specified:
V
CC
= 2.7V to 5.5V
V
REFCM
= V
REF
/2, F
S
= 0.5V
REF
/Gain
V
IN
= IN
+
– IN
–
, V
IN(CM)
= (IN
+
– IN
–
)/2,
where IN
+
and IN
–
are the selected input channels.
Note 4: Use internal conversion clock or external conversion clock source
with f
EOSC
= 307.2kHz unless other wise specified.
Note 5: Guaranteed by design, not subject to test.
Note 6: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the
transfer curve.
The deviation is measured from the center of the quantization band.
Note 7:
50Hz mode (internal oscillator) or f
EOSC
= 256kHz ±2% (external
oscillator).
Note 8: 60Hz mode (internal oscillator) or f
EOSC
= 307.2kHz ±2% (external
oscillator).
Note 9: Simultaneous 50Hz/60Hz mode (internal oscillator) or f
EOSC
=
280kHz ±2% (external oscillator).
Note 10: The SCK can be configured in external SCK mode or internal SCK
mode. In external SCK mode, the SCK pin is used as a digital input and the
driving clock is f
ESCK
. In the internal SCK mode, the SCK pin is used as a
digital output and the output clock signal during the data output is f
ISCK
.
Note 11: The external oscillator is connected to the f
O
pin. The external
oscillator frequency, f
EOSC
, is expressed in kHz.
Note 12: The converter uses its internal oscillator.
Note 13: The output noise includes the contribution of the internal
calibration operations.
Note 14: Guaranteed by design and test correlation.
Note 15: The converter is in external SCK mode of operation such that the
SCK pin is used as a digital input. The frequency of the clock signal driving
SCK during the data output is f
ESCK
and is expressed in Hz.
Note 16: Refer to Applications Information section for performance vs
data rate graphs.
Note 17:
The converter in internal SCK mode of operation such that the
SCK pin is used as a digital output.
Note 18: For V
CC
< 3V, V
IH
is 2.5V for pin f
O
.
LTC2486
6
2486fe
For more information www.linear.com/LTC2486
TYPICAL PERFORMANCE CHARACTERISTICS
Integral Nonlinearity
(V
CC
= 5V, V
REF
= 5V)
Integral Nonlinearity
(V
CC
= 5V, V
REF
= 2.5V)
Integral Nonlinearity
(V
CC
= 2.7V, V
REF
= 2.5V)
Total Unadjusted Error
(V
CC
= 5V, V
REF
= 5V)
Total Unadjusted Error
(V
CC
= 5V, V
REF
= 2.5V)
Total Unadjusted Error
(V
CC
= 2.7V, V
REF
= 2.5V)
Noise Histogram (6.8sps)
Noise Histogram (7.5sps)
Long-Term ADC Readings
INPUT VOLTAGE (V)
–3
INL (ppm OF V
REF
)
–1
1
3
–2
0
2
–1.5 –0.5 0.5 1.5
2486 G01
2.5
–2–2.5 –1 0 1 2
V
CC
= 5V
V
REF
= 5V
V
IN(CM)
= 2.5V
f
O
= GND
85°C
–45°C
25°C
INPUT VOLTAGE (V)
–3
INL (ppm OF V
REF
)
–1
1
3
–2
0
2
–0.75 –0.25 0.25 0.75
2486 G02
1.25
–1.25
V
CC
= 5V
V
REF
= 2.5V
V
IN(CM)
= 1.25V
f
O
= GND
–45°C, 25°C, 85°C
INPUT VOLTAGE (V)
–3
REF
–1
1
–2
0
2
–0.75 –0.25 0.25 0.75
–1.25
V
CC
= 2.7V
V
REF
= 2.5V
V
IN(CM)
= 1.25V
f
O
= GND
–45°C, 25°C, 85°C
INPUT VOLTAGE (V)
–12
TUE (ppm OF V
REF
)
–4
4
12
–8
0
8
–1.5 –0.5 0.5 1.5
2486 G04
2.5
–2–2.5 –1 0 1 2
V
CC
= 5V
V
REF
= 5V
V
IN(CM)
= 2.5V
f
O
= GND
85°C
25°C
–45°C
INPUT VOLTAGE (V)
–12
TUE (ppm OF V
REF
)
–4
4
12
–8
0
8
–0.75 –0.25 0.25 0.75
2486 G05
1.25
–1.25
V
CC
= 5V
V
REF
= 2.5V
V
IN(CM)
= 1.25V
f
O
= GND
85°C
25°C
–45°C
INPUT VOLTAGE (V)
–12
REF
–4
4
–8
0
8
–0.75 –0.25 0.25 0.75
–1.25
V
CC
= 2.7V
V
REF
= 2.5V
V
IN(CM)
= 1.25V
f
O
= GND
85°C
25°C
–45°C
OUTPUT READING (µV)
–3
NUMBER OF READINGS (%)
8
10
12
0.6
2486 G07
6
4
–1.8 –0.6
–2.4 1.2
–1.2 0
1.8
2
0
14
10,000 CONSECUTIVE
READINGS
V
CC
= 5V
V
REF
= 5V
V
IN
= 0V
T
A
= 25°C
GAIN = 256
RMS = 0.60µV
AVERAGE = –0.69µV
OUTPUT READING (µV)
–3
NUMBER OF READINGS (%)
8
10
12
0.6
2486 G08
6
4
–1.8 –0.6
–2.4 1.2
–1.2 0
1.8
2
0
14
10,000 CONSECUTIVE
READINGS
V
CC
= 2.7V
V
REF
= 2.5V
V
IN
= 0V
T
A
= 25°C
GAIN = 256
RMS = 0.59µV
AVERAGE = –0.19µV
TIME (HOURS)
0
–5
ADC READING (µV)
–3
–1
1
10
20
30 40
2486 G09
50
3
5
–4
–2
0
2
4
60
V
CC
= 5V, V
REF
= 5V, V
IN
= 0V, V
IN(CM)
= 2.5V
T
A
= 25°C, RMS NOISE = 0.60µV, GAIN = 256
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36

LTC2486CDE#TRPBF

Mfr. #:
Buy LTC2486CDE#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 16-bit, 4-ch Delta Sigma ADC w/ Temp Sensor PGA
Lifecycle:
New from this manufacturer.
Delivery:
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