LTC2440IGN#PBF Linear Technology, LTC2440IGN#PBF Datasheet - Page 4

• Manufacturer Part Number: LTC2440IGN#PBF
• Description: IC ADC DIFFER 24-BIT HS 16-SSOP
• Manufacturer: Linear Technology

Specifications of LTC2440IGN#PBF

• Number Of Bits: 24
• Sampling Rate (per Second): 3.5k
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 40mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LTC2440
POWER REQUIREMENTS
SYMBOL
V
I
TIMING CHARACTERISTICS
SYMBOL
f
t
t
t
f
D
f
t
t
t
t
t
t
t
t
t
t
t
t
t
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: V
V
V
Note 4: f
f
Note 5: Guaranteed by design, not subject to test.
Note 6: Integral nonlinearity is defi ned 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.
4
range, otherwise specifi cations are at T
range, otherwise specifi cations are at T
CC
EOSC
HEO
LEO
CONV
ISCK
ESCK
LESCK
HESCK
DOUT_ISCK
DOUT_ESCK
1
2
3
4
KQMAX
KQMIN
5
7
8
EOSC
REF
IN
CC
ISCK
= IN
= REF
= 10MHz unless otherwise specifi ed.
+
O
CC
– IN
pin tied to GND or to external conversion clock source with
+
= 4.5 to 5.5V unless otherwise specifi ed.
– REF
–
, V
INCM
–
, V
PARAMETER
Supply Voltage
Supply Current
Conversion Mode
Sleep Mode
PARAMETER
External Oscillator Frequency Range
External Oscillator High Period
External Oscillator Low Period
Conversion Time
Internal SCK Frequency
Internal SCK Duty Cycle
External SCK Frequency Range
External SCK Low Period
External SCK High Period
Internal SCK 32-Bit Data Output Time
External SCK 32-Bit Data Output Time
CS to SDO Low Z
CS ↑ to SDO High Z
CS to SCK
CS to SCK ↑
SCK to SDO Valid
SDO Hold After SCK
SCK Set-Up Before CS
SDI Setup Before SCK ↑
SDI Hold After SCK ↑
REFCM
= (IN
↑
↑
↑
↑
+
= (REF
+ IN
–
↑
)/2.
+
+ REF
↑
–
)/2;
↑
A
A
= 25°C. (Note 3)
= 25°C. (Note 3)
The
The
l
denotes the specifi cations which apply over the full operating temperature
CONDITIONS
CS = 0V (Note 7)
CS = V
CONDITIONS
OSR = 256 (SDI = 0)
OSR = 32768 (SDI = 1)
External Oscillator (Note 10, 13)
Internal Oscillator (Note 9)
External Oscillator (Notes 9, 10)
(Note 9)
(Note 8)
(Note 8)
(Note 8)
Internal Oscillator (Notes 9, 11)
External Oscillator (Notes 9, 10)
(Note 8)
(Note 12)
(Note 12)
(Note 9)
(Notes 8, 12)
(Note 5)
(Note 5)
(Note 5)
l
denotes the specifi cations which apply over the full operating temperature
CC
(Note 7)
Note 7: The converter uses the internal oscillator.
Note 8: 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
Note 9: The converter is in internal SCK mode of operation such that the
SCK pin is used as a digital output. In this mode of operation, the SCK pin
has a total equivalent load capacitance of C
Note 10: The external oscillator is connected to the f
oscillator frequency, f
Note 11: The converter uses the internal oscillator. f
Note 12: Guaranteed by design and test correlation.
Note 13: There is an internal reset that adds an additional 1μs (typical) to
the conversion time.
EOSC
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
, is expressed in kHz.
0.99
30.9
MIN
126
0.1
0.8
25
25
45
25
25
25
15
50
10
10
0
0
l
l
l
ESCK
and is expressed in Hz.
MIN
4.5
40 • OSR + 170
f
320/f
EOSC
f
32/f
EOSC
LOAD
1.13
35.3
TYP
145
0.9
5
ESCK
(kHz)
EOSC
/10
TYP
= 20pF .
8
8
O
O
= 0V.
pin. The external
MAX
10000
10000
5.5
11
30
MAX
1.33
41.6
170
20
55
20
25
25
25
1
UNITS
UNITS
2440fd
MHz
MHz
mA
ms
ms
ms
μA
ns
ns
ns
ns
μs
ns
ns
μs
ns
ns
ns
ns
ns
ns
%
V
s
s