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LTC2424CG#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36
4
LTC2424/LTC2428
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage 2.7V ≤ V
CC
≤ 5.5V ● 2.5 V
CS, F
O
2.7V ≤ V
CC
≤ 3.3V 2.0 V
V
IL
Low Level Input Voltage 4.5V ≤ V
CC
≤ 5.5V ● 0.8 V
CS, F
O
2.7V ≤ V
CC
≤ 5.5V 0.6 V
V
IH
High Level Input Voltage 2.7V ≤ V
CC
≤ 5.5V (Note 9) ● 2.5 V
SCK 2.7V ≤ V
CC
≤ 3.3V (Note 9) 2.0 V
V
IL
Low Level Input Voltage 4.5V ≤ V
CC
≤ 5.5V (Note 9) ● 0.8 V
SCK 2.7V ≤ V
CC
≤ 5.5V (Note 9) 0.6 V
I
IN
Digital Input Current 0V ≤ V
IN
≤ V
CC
● –10 10 µA
CS, F
O
I
IN
Digital Input Current 0V ≤ V
IN
≤ V
CC
(Note 9) ● –10 10 µA
SCK
C
IN
Digital Input Capacitance 10 pF
CS, F
O
C
IN
Digital Input Capacitance (Note 9) 10 pF
SCK
V
OH
High Level Output Voltage I
O
= –800µA ● V
CC
– 0.5 V
SDO
V
OL
Low Level Output Voltage I
O
= 1.6mA ● 0.4 V
SDO
V
OH
High Level Output Voltage I
O
= –800µA (Note 10) ● V
CC
– 0.5 V
SCK
V
OL
Low Level Output Voltage I
O
= 1.6mA (Note 10) ● 0.4 V
SCK
I
OZ
High-Z Output Leakage ● –10 10 µA
SDO
V
IN
H
MUX
MUX High Level Input Voltage V
+
= 3V ● 2V
V
IN
L
MUX
MUX Low Level Input Voltage V
+
= 2.4V ● 0.8 V
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage ● 2.7 5.5 V
I
CC
Supply Current (Pin 2)
Conversion Mode CS = 0V (Note 12)
● 200 300 µA
Sleep Mode CS = V
CC
(Note 12) ● 20 30 µA
I
CC(MUX)
Multiplexer Supply Current (Pin 8) All Logic Inputs Tied Together ● 15 40 µA
V
IN
= 0V or 5V
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 3)
POWER REQUIRE E TS
WU
5
LTC2424/LTC2428
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 3)
f
EOSC
External Oscillator Frequency Range 20-Bit Effective Resolution ● 2.56 307.2 kHz
12-Bit Effective Resolution
● 2.56k 2.048M Hz
t
HEO
External Oscillator High Period ● 0.5 390 µs
t
LEO
External Oscillator Low Period ● 0.5 390 µs
t
CONV
Conversion Time F
O
= 0V ● 130.86 133.53 136.20 ms
F
O
= V
CC
● 157.03 160.23 163.44 ms
External Oscillator (Note 11)
● 20510/f
EOSC
(in kHz) ms
f
ISCK
Internal SCK Frequency Internal Oscillator (Note 10) 19.2 kHz
External Oscillator (Notes 10, 11) f
EOSC
/8 kHz
D
ISCK
Internal SCK Duty Cycle (Note 10) 45 55 %
f
ESCK
External SCK Frequency Range (Note 9) ● 2000 kHz
t
LESCK
External SCK Low Period (Note 9) ● 250 ns
t
HESCK
External SCK High Period (Note 9) ● 250 ns
t
DOUT_ISCK
Internal SCK 24-Bit Data Output Time Internal Oscillator (Notes 10, 12) ● 1.23 1.25 1.28 ms
External Oscillator (Notes 10, 11)
● 192/f
EOSC
(in kHz) ms
t
DOUT_ESCK
External SCK 24-Bit Data Output Time (Note 9) ● 24/f
ESCK
(in kHz) ms
t
1
CS ↓ to SDO Low Z ● 0 150 ns
t
2
CS ↑ to SDO High Z ● 0 150 ns
t
3
CS ↓ to SCK ↓ (Note 10) ● 0 150 ns
t
4
CS ↓ to SCK ↑ (Note 9) ● 50 ns
t
KQMAX
SCK ↓ to SDO Valid ● 200 ns
t
KQMIN
SDO Hold After SCK ↓ (Note 5) ● 15 ns
t
5
SCK Set-Up Before CS ↓ ● 50 ns
t
6
SCK Hold After CS ↓ ● 50 ns
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Note 1: Absolute Maximum Ratings are those values beyond which the
life of the device may be impaired.
Note 2: All voltage values are with respect to GND.
Note 3: V
CC
= 2.7 to 5.5V unless otherwise specified, source input
is 0Ω. CSADC = CSMUX = CS. V
REF
= FS
SET
– ZS
SET
.
Note 4: Internal Conversion Clock source with the F
O
pin tied
to GND or to V
CC
or to external conversion clock source with
f
EOSC
= 153600Hz unless otherwise 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: F
O
= 0V (internal oscillator) or f
EOSC
= 153600Hz ±2%
(external oscillator).
Note 8: F
O
= V
CC
(internal oscillator) or f
EOSC
= 128000Hz ±2%
(external oscillator).
Note 9: The converter is in external SCK mode of operation such that
the SCK pin is used as digital input. The frequency of the clock signal
driving SCK during the data output is f
ESCK
and is expressed in kHz.
Note 10: The converter is in internal SCK mode of operation such that
the SCK pin is used as digital output. In this mode of operation the
SCK pin has a total equivalent load capacitance C
LOAD
= 20pF.
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 the internal oscillator.
F
O
= 0V or F
O
= V
CC
.
Note 13: The output noise includes the contribution of the internal
calibration operations.
Note 14: V
REF
= FS
SET
– ZS
SET
. The minimum input voltage is limited
to –0.3V and the maximum to V
CC
+ 0.3V.
Note 15: V
S
is the voltage applied to a channel input. V
D
is the voltage
applied to the MUX output.
Note 16: V
CC(DC)
= 4.1V, V
CC(AC)
= 2.8V
P-P
.
TI I G CHARACTERISTICS
UW
6
LTC2424/LTC2428
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Total Unadjusted Error (3V Supply)
Negative Input Extended Total
Unadjusted Error (3V Supply)
INL (3V Supply)
Positive Input Extended Total
Unadjusted Error (3V Supply) Total Unadjusted Error (5V Supply) INL (5V Supply)
Negative Input Extended Total
Unadjusted Error (5V Supply)
Positive Input Extended Total
Unadjusted Error (5V Supply)
Offset Error vs Reference Voltage
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
2.0
24248 G01
–2
–6
0
4
8
–4
–8
–10
0.5
1.0
1.5
2.5
V
CC
= 3V
V
REF
= 2.5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
2.0
24248 G02
–2
–6
0
4
8
–4
–8
–10
0.5
1.0
1.5
2.5
V
CC
= 3V
V
REF
= 2.5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
–10
–6
–2
2
–0.05
–0.10
–0.15 –0.20
24248 G03
–0.25
10
–0.30
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 3V
V
REF
= 2.5V
T
A
= 90°C
T
A
= 25°C
T
A
= –45°C
T
A
= –55°C
INPUT VOLTAGE (V)
2.50
–10
–6
–2
2
2.55
2.60
2.65 2.70
24248 G04
2.75
10
2.80
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 3V
V
REF
= 2.5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
4
24248 G05
–2
–6
0
4
8
–4
–8
–10
1
2
3
5
V
CC
= 5V
V
REF
= 5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
ERROR (ppm)
2
6
10
4
2420 G06
–2
–6
0
4
8
–4
–8
–10
1
2
3
5
V
CC
= 5V
V
REF
= 5V
T
A
= –55°C, –45°C, 25°C, 90°C
INPUT VOLTAGE (V)
0
–10
–6
–2
2
–0.05
–0.10
–0.15 –0.20
24248 G07
–0.25
10
–0.30
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 5V
V
REF
= 5V
T
A
= 90°C
T
A
= 25°C
T
A
= –55°C
T
A
= –45°C
INPUT VOLTAGE (V)
5.00
–10
–6
–2
2
5.05
5.10
5.15 5.20
24248 G08
5.25
10
5.30
ERROR (ppm)
6
–8
–4
0
8
4
V
CC
= 5V
V
REF
= 5V
T
A
= –45°C
T
A
= –55°C
T
A
= 25°CT
A
= 90°C
REFERENCE VOLTAGE (V)
0
OFFSET ERROR (ppm)
90
120
150
4
24248 G09
60
30
0
1
2
3
5
V
CC
= 5V
T
A
= 25°C
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36

LTC2424CG#TRPBF

Mfr. #:
Buy LTC2424CG#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 4/Ch 20-Bit Delta Sigma ADC
Lifecycle:
New from this manufacturer.
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