.............................(GND – 0.3V) to (REF + 0.3V)
Digital Input Voltage
(Note 3) .......................... (GND – 0.3V) to (OV
DD
+ 0.3V)
Digital Output Voltage
(Note 3) .......................... (GND – 0.3V) to (OV
DD
+ 0.3V)
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC2368C ................................................ 0°C to 70°C
LTC2368I .............................................–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
CHAIN
V
DD
GND
IN
+
IN
–
GND
REF
REF
1
2
3
4
5
6
7
8
17
GND
16 GND
15 OV
DD
14 SDO
13 SCK
12 RDL/SDI
11 BUSY
10 GND
9 CNV
TOP VIEW
CHAIN
V
DD
GND
IN
+
IN
–
GND
REF
REF
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND
OV
DD
SDO
SCK
RDL/SDI
BUSY
GND
CNV
DE PACKAGE
16-LEAD (4mm
×
3mm) PLASTIC DFN
T
JMAX
= 150°C,
θ
JA
= 40°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
MS PACKAGE
16-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 110°C/W
ORDER INFORMATION
LEAD FREE FINISH
LTC2368CMS-24#PBF
LTC2368IMS-24#PBF
LTC2368CDE-24#PBF
LTC2368IDE-24#PBF
TAPE AND REEL
LTC2368CMS-24#TRPBF
LTC2368IMS-24#TRPBF
LTC2368CDE-24#TRPBF
LTC2368IDE-24#TRPBF
PART MARKING*
236824
236824
23684
23684
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead (4mm × 3mm) Plastic DFN
16-Lead (4mm × 3mm) Plastic DFN
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
236824f
2
For more information
www.linear.com/LTC2368-24
LTC2368-24
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
V
IN+
V
IN–
V
IN+
– V
IN–
I
IN
C
IN
CMRR
PARAMETER
Absolute Input Range (IN
+
)
Absolute Input Range (IN
–
)
Input Differential Voltage Range
Analog Input Leakage Current
Analog Input Capacitance
Input Common Mode Rejection Ratio
Sample Mode
Hold Mode
f
IN
= 500kHz
CONDITIONS
(Note 5)
(Note 5)
V
IN
= V
IN+
– V
IN–
l
l
l
ELECTRICAL CHARACTERISTICS
MIN
−0.1
−0.1
0
TYP
MAX
V
REF
+ 0.1
0.1
V
REF
UNITS
V
V
V
μA
pF
pF
dB
0.01
45
5
83
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
PARAMETER
Resolution
No Missing Codes
N
Number of Averages
Transition Noise
N=1
N = 16
N = 1024
N = 16384
(Note 6)
(Note 7)
(Note 8)
(Note 8)
CONDITIONS
l
l
l
l
l
l
l
l
l
l
CONVERTER CHARACTERISTICS
MIN
24
24
1
TYP
MAX
UNITS
Bits
Bits
65536
68.5
16.8
2.24
0.87
LSB
RMS
LSB
RMS
LSB
RMS
LSB
RMS
4.5
0.9
20
100
ppm
LSB
ppm
ppb/°C
ppm
ppm/°C
INL
DNL
ZSE
FSE
Integral Linearity Error
Differential Linearity Error
Zero-Scale Error
Zero-Scale Error Drift
Full-Scale Error
Full-Scale Error Drift
–4.5
–0.9
−20
−100
±0.5
±0.4
0
±0.7
±10
±0.05
l
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C and A
IN
= –1dBFS. (Notes 4, 9)
SYMBOL PARAMETER
DR
Dynamic Range
CONDITIONS
IN
+
= IN
–
= GND, V
REF
= 5V, N = 1
IN
+
= IN
–
= GND, V
REF
= 5V, N = 16
IN
+
= IN
–
= GND, V
REF
= 5V, N = 1024
IN
+
= IN
–
= GND, V
REF
= 5V, N = 16384
IN
+
= IN
–
= GND, V
REF
= 5V, N = 65536
l
l
l
DYNAMIC ACCURACY
MIN
TYP
98
110
128
138
140
MAX
UNITS
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
SINAD
SNR
Signal-to-(Noise + Distortion) Ratio f
IN
= 2kHz, V
REF
= 5V
Signal-to-Noise Ratio
f
IN
= 2kHz, V
REF
= 5V
f
IN
= 2kHz, V
REF
= 2.5V
f
IN
= 2kHz, V
REF
= 5V, N = 16, A
IN
= –20dBFS
f
IN
= 50Hz, V
REF
= 5V, N = 1024, A
IN
= –20dBFS
Total Harmonic Distortion
f
IN
= 2kHz, V
REF
= 5V
f
IN
= 2kHz, V
REF
= 2.5V
f
IN
= 2kHz, V
REF
= 5V, N = 16, A
IN
= –20dBFS
f
IN
= 50Hz, V
REF
= 5V, N = 1024, A
IN
= –20dBFS
f
IN
= 2kHz, V
REF
= 5V
95.5
95.5
90
98
98
92.3
110
124
–116
–116
–116
–116
–103
–103
THD
l
l
dB
dB
dB
dB
dB
MHz
236824f
SFDR
Spurious Free Dynamic Range
–3dB Input Linear Bandwidth
l
103
116
34
For more information
www.linear.com/LTC2368-24
3
LTC2368-24
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C and A
IN
= –1dBFS. (Notes 4, 9)
SYMBOL PARAMETER
Aperture Delay
Aperture Jitter
Transient Response
Full–Scale Step
CONDITIONS
MIN
TYP
500
4
312
MAX
UNITS
ps
ps
RMS
ns
DYNAMIC ACCURACY
REFERENCE INPUT
SYMBOL
V
REF
I
REF
PARAMETER
Reference Voltage
Reference Input Current
The
l
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
CONDITIONS
(Note 5)
(Note 10)
l
l
MIN
2.5
TYP
0.45
MAX
5.1
0.6
UNITS
V
mA
DIGITAL INPUTS AND DIGITAL OUTPUTS
SYMBOL
V
IH
V
IL
I
IN
C
IN
V
OH
V
OL
I
OZ
I
SOURCE
I
SINK
PARAMETER
High Level Input Voltage
Low Level Input Voltage
Digital Input Current
Digital Input Capacitance
High Level Output Voltage
Low Level Output Voltage
Hi-Z Output Leakage Current
Output Source Current
Output Sink Current
I
O
= –500µA
I
O
= 500µA
V
OUT
= 0V to OV
DD
V
OUT
= 0V
V
OUT
= OV
DD
V
IN
= 0V to OV
DD
CONDITIONS
The
l
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
MIN
l
l
l
TYP
MAX
0.2 • OV
DD
UNITS
V
V
μA
pF
V
0.8 • OV
DD
–10
5
10
l
OV
DD
– 0.2
l
l
0.2
–10
–10
10
10
V
µA
mA
mA
POWER REQUIREMENTS
SYMBOL
V
DD
OV
DD
I
VDD
I
OVDD
I
PD
P
D
PARAMETER
Supply Voltage
Supply Voltage
Supply Current
Supply Current
Power Down Mode
Power Dissipation
Power Down Mode
The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 4)
CONDITIONS
l
l
l
MIN
2.375
1.71
TYP
2.5
8.4
0.4
1
21
2.5
MAX
2.625
5.25
10
90
25
225
UNITS
V
V
mA
mA
μA
mW
μW
(C
L
= 20pF)
Conversion Done (I
VDD
+ I
OVDD
+ I
REF
)
Conversion Done (I
VDD
+ I
OVDD
+ I
REF
)
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
f
SMPL
f
ODR
t
CONV
PARAMETER
Maximum Sampling Frequency
Output Data Rate
Conversion Time
CONDITIONS
l
l
l
ADC TIMING CHARACTERISTICS
MIN
TYP
MAX
1
1
UNITS
Msps
Msps
ns
236824f
615
675
4
For more information
www.linear.com/LTC2368-24
LTC2368-24
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
t
ACQ
t
CYC
t
CNVH
t
CNVL
t
BUSYLH
t
QUIET
t
SCK
t
SCKH
t
SCKL
t
SSDISCK
t
HSDISCK
t
SCKCH
t
DSDO
t
HSDO
t
EN
t
DIS
PARAMETER
Acquisition Time
Time Between Conversions
CNV High Time
Minimum Low Time for CNV
CNV↑ to BUSY↑ Delay
SCK Quiet Time from CNV↑
SCK Period
SCK High Time
SCK Low Time
SDI Setup Time From SCK↑
SDI Hold Time From SCK↑
SCK Period in Chain Mode
SDO Data Valid Delay from SCK↑
(Note 11)
(Note 11)
t
SCKCH
= t
SSDISCK
+ t
DSDO
(Note 11)
C
L
= 20pF, OV
DD
= 5.25V
C
L
= 20pF, OV
DD
= 2.5V
C
L
= 20pF, OV
DD
= 1.71V
C
L
= 20pF (Note 7)
(Note 11)
(Note 11)
(Note 11)
C
L
= 20pF
(Note 7)
(Notes 11, 12)
CONDITIONS
t
ACQ
= t
CYC
– t
CONV
– t
BUSYLH
(Note 7)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
ADC TIMING CHARACTERISTICS
The
l
denotes the specifications which apply over the full operating
MIN
312
1
20
20
13
10
10
4
4
4
1
13.5
7.5
8
9.5
1
5
16
13
TYP
MAX
UNITS
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SDO Data Remains Valid Delay from SCK↑ C
L
= 20pF (Note 7)
Bus Enable Time After RDL↓
Bus Relinquish Time After RDL↑
t
DSDOBUSYL
SDO Data Valid Delay from BUSY↓
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 ground.
Note 3:
When these pin voltages are taken below ground or above REF or
OV
DD
, they will be clamped by internal diodes. This product can handle
input currents up to 100mA below ground or above REF or OV
DD
without
latchup.
Note 4:
V
DD
= 2.5V, OV
DD
= 2.5V, REF = 5V, f
SMPL
= 1MHz, N = 1.
Note 5:
Recommended operating conditions.
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:
Guaranteed by design, not subject to test.
Note 8:
Zero-scale error is the offset voltage measured from 0.5LSB when
the output code flickers between 0000 0000 0000 0000 0000 0000 and
0000 0000 0000 0000 0000 0001. Full-scale error is the deviation of the
last code transition from ideal and includes the effect of offset error.
Note 9:
All specifications in dB are referred to a full-scale 5V input with a
5V reference voltage, unless otherwise specified.
Note 10:
f
SMPL
= 1MHz, I
REF
varies proportionally with sample rate.
Note 11:
Parameter tested and guaranteed at OV
DD
= 1.71V, OV
DD
= 2.5V
and OV
DD
= 5.25V.
Note 12:
t
SCK
of 10ns maximum allows a shift clock frequency up to
100MHz for rising edge capture.
0.8 • OV
DD
0.2 • OV
DD
t
DELAY
0.8 • OV
DD
0.2 • OV
DD
t
DELAY
0.8 • OV
DD
0.2 • OV
DD
50%
t
WIDTH
50%
236824 F01
Figure 1. Voltage Levels for Timing Specifications
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