LTC2365/LTC2366
1Msps/3Msps, 12-Bit Serial
Sampling ADCs in TSOT
FEATURES
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DESCRIPTION
The LTC
®
2365/LTC2366 are 1Msps/3Msps, 12-bit, sam-
pling A/D converters that draw only 2mA and 2.6mA, re-
spectively, from a single 3V supply. These high performance
devices include a high dynamic range sample-and-hold
and a high speed serial interface. The full-scale input is
0V to V
DD
or V
REF
. Outstanding AC performance includes
72dB SINAD and –80dB THD at sample rates of 3Msps.
The serial interface provides flexible power management
and allows maximum power efficiency at low throughput
rates. These devices are available in tiny 6- and 8-lead
TSOT-23 packages.
The serial interface, tiny TSOT-23 package and extremely
high sample rate-to-power ratio make the LTC2365/LTC2366
ideal for compact, low power, high speed systems.
The high impedance single-ended analog input and the
ability to operate with reduced spans (down to 1.4V full
scale) allow direct connection to sensors and transducers in
many applications, eliminating the need for gain stages.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
12-Bit Resolution
1Msps/3Msps Sampling Rates
Low Noise: 73dB SNR
Low Power Dissipation: 6mW
Single Supply 2.35V to 3.6V Operation
No Data Latency
Sleep Mode with 0.1μA Typical Supply Current
Dedicated External Reference (TSOT23-8)
1V to 3.6V Digital Output Supply (TSOT23-8)
SPI/MICROWIRE™ Compatible Serial I/O
Guaranteed Operation from –40°C to 125°C
6- and 8-Lead TSOT-23 Packages
APPLICATIONS
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Communication Systems
Data Acquisition Systems
Handheld Terminal Interface
Medical Imaging
Uninterrupted Power Supplies
Battery-Operated Systems
Automotive
TYPICAL APPLICATION
12-Bit TSOT23-6/-8 ADC Family
DATA OUTPUT RATE
Part Number
3Msps
LTC2366
1Msps
LTC2365
500ksps
LTC2362
250ksps
LTC2361
100ksps
LTC2360
0
1MHz Sine Wave 8192 FFT Plot
V
DD
= 3V
f
SMPL
= 3Msps
–20 f = 994kHz
IN
SINAD = 72dB
–40 THD = –80.3dB
MAGNITUE (dB)
–60
–80
–100
–120
–140
0
250
Single 3V Supply, 3Msps, 12-Bit Sampling ADC
3V
10μF
LTC2366
V
DD
V
REF
GND
ANALOG INPUT
0V TO 3V
A
IN
CS
SDO
SCK
OV
DD
4.7μF
23656 TA01
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
DIGITAL OUTPUT SUPPLY
1V TO V
DD
750 1000 1250
500
INPUT FREQUENCY (kHz)
1500
23656 TA01b
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LTC2365/LTC2366
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (V
DD
) ...............................................4.0V
Supply Voltage (OV
DD
) ................Min (V
DD
+ 0.3V, 4.0V)
V
REF
and Analog Input Voltage
(Note 3)........................................ –0.3V to (V
DD
+ 0.3V)
Digital Input Voltage..................... –0.3V to (V
DD
+ 0.3V)
Digital Output Voltage .................. –0.3V to (V
DD
+ 0.3V)
Power Dissipation ...............................................100mW
Operating Temperature Range
LTC2365C/LTC2366C .............................. 0°C to 70°C
LTC2365I/LTC2366I .............................–40°C to 85°C
LTC2365H/LTC2366H (Note 13) ........ –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
PIN CONFIGURATION
TOP VIEW
V
DD
1
V
REF
2
GND 3
A
IN
4
8
CS
7 SCK
6 SDO
5 OV
DD
V
DD
1
GND 2
A
IN
3
TOP VIEW
6
CS
5 SDO
4 SCK
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/W
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/W
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
LTC2366CTS8#TRMPBF
LTC2366ITS8#TRMPBF
LTC2366HTS8#TRMPBF
LTC2366CS6#TRMPBF
LTC2366IS6#TRMPBF
LTC2366HS6#TRMPBF
LTC2365CTS8#TRMPBF
LTC2365ITS8#TRMPBF
LTC2365HTS8#TRMPBF
LTC2365CS6#TRMPBF
LTC2365IS6#TRMPBF
LTC2365HS6#TRMPBF
TAPE AND REEL
LTC2366CTS8#TRPBF
LTC2366ITS8#TRPBF
LTC2366HTS8#TRPBF
LTC2366CS6#TRPBF
LTC2366IS6#TRPBF
LTC2366HS6#TRPBF
LTC2365CTS8#TRPBF
LTC2365ITS8#TRPBF
LTC2365HTS8#TRPBF
LTC2365CS6#TRPBF
LTC2365IS6#TRPBF
LTC2365HS6#TRPBF
PART MARKING*
LTCYZ
LTCYZ
LTCYZ
LTCXK
LTCXK
LTCXK
LTDCB
LTDCB
LTDCB
LTDCC
LTDCC
LTDCC
PACKAGE DESCRIPTION
8-lead Plastic TSOT-23
8-lead Plastic TSOT-23
8-lead Plastic TSOT-23
6-lead Plastic TSOT-23
6-lead Plastic TSOT-23
6-lead Plastic TSOT-23
8-lead Plastic TSOT-23
8-lead Plastic TSOT-23
8-lead Plastic TSOT-23
6-lead Plastic TSOT-23
6-lead Plastic TSOT-23
6-lead Plastic TSOT-23
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for information on lead based finish parts.
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/
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LTC2365/LTC2366
CONVERTER CHARACTERISTICS
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Differential Linearity Error
Transition Noise
Offset Error
Gain Error
Total Unadjusted Error
(Note 5, 6)
(Note 6)
(Note 7)
(Note 6)
(Note 6)
S6 Package (Note 6)
TS8 Package (Note 6)
l
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)
LTC2365
CONDITIONS
l
l
l
LTC2366
MAX
±1
±1
±3.5
±2
±3.5
±4.5
MIN
12
TYP
±0.25
±0.25
0.34
2
1
2
3
±3.5
±2
±3.5
±4.5
MAX
±1
±1
UNITS
Bits
LSB
LSB
LSB
RMS
LSB
LSB
LSB
LSB
MIN
12
TYP
±0.25
±0.25
0.34
2
1
2
3
ANALOG INPUTS
The
l
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
PARAMETER
Analog Input Voltage
Analog Input Leakage Current
Analog Input Capacitance
Reference Input Voltage
Reference Input Leakage Current
Reference Input Capacitance
Sample-and-Hold Aperture Delay Time
Sample-and-Hold Aperture Delay Time Jitter
SYMBOL
V
IN
I
IN
C
IN
V
REF
I
REF
C
REF
t
AP
t
JITTER
CONDITIONS
S6 Package
TS8 Package
CS
= High
Between Conversions
During Conversions
TS8 Package
TS8 Package
TS8 Package
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MIN
–0.05
–0.05
TYP
MAX
V
DD
+ 0.05
V
REF
+ 0.05
±1
UNITS
V
V
μA
pF
pF
20
4
1.4
4
1
0.3
V
DD
+ 0.05
±1
V
μA
pF
ns
ns
DYNAMIC ACCURACY
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 4)
PARAMETER
Signal-to-Noise Ratio
Total Harmonic Distortion
Spurious Free Dynamic Range
Intermodulation Distortion
Full-Power Bandwidth
Full-Linear Bandwidth
LTC2365
SYMBOL
SINAD
SNR
THD
SFDR
IMD
CONDITIONS
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LTC2366
TYP MAX UNITS
71
72
–80
82
–71.5
dB
MHz
MHz
MHz
–72
dB
dB
dB
68
69
–72
MIN
68
70
TYP MAX MIN
72
73
–86
87
–76
30
5
2
Signal-to-(Noise + Distortion) Ratio f
IN
= 1MHz
f
IN
= 1MHz
f
IN
= 1MHz
f
IN
= 1MHz
f
IN1
= 0.97MHz, f
IN2
= 1MHz for LTC2366
f
IN1
= 97kHz, f
IN2
= 100kHz for LTC2365
At 3dB
At 0.1dB
SINAD ≥ 68dB
50
8
2.5
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LTC2365/LTC2366
DIGITAL INPUTS AND DIGITAL OUTPUTS
SYMBOL
V
IH
V
IL
I
IH
I
IL
C
IN
V
OH
V
OL
I
OZ
C
OZ
I
SOURCE
I
SINK
PARAMETER
High Level Input Voltage
Low Level Input Voltage
High Level Input Current
Low Level Input Current
Digital Input Capacitance
High Level Output Voltage
Low Level Output Voltage
Hi-Z Output Leakage
Hi-Z Output Capacitance
Output Source Current
Output Sink Current
V
DD
= 2.35V to 3.6V, I
SOURCE
= 200μA
V
DD
= 2.35V to 3.6V, I
SINK
= 200μA
CS
= V
DD
CS
= V
DD
V
OUT
= 0V
V
OUT
= V
DD
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The
l
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
CONDITIONS
2.7V < V
DD
≤ 3.6V
2.35V ≤ V
DD
≤ 2.7V
2.7V < V
DD
≤ 3.6V
2.35V ≤ V
DD
≤ 2.7V
V
IN
= V
DD
V
IN
= 0V
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l
l
l
l
MIN
2
1.7
TYP
MAX
UNITS
V
V
0.8
0.7
2.5
–2.5
2
V
DD
– 0.2
0.2
±3
4
–10
10
V
V
μA
μA
pF
V
V
μA
pF
mA
mA
POWER REQUIREMENT
SYMBOL
V
DD
O
VDD
I
DD
PARAMETER
Supply Voltage
Digital Output Supply Voltage
Supply Current, Static Mode
Operational Mode, LTC2366
Operational Mode, LTC2365
Sleep Mode
Sleep Mode
Power Dissipation, Static Mode
Operational Mode, LTC2366
Operational Mode, LTC2365
Sleep Mode
Sleep 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
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l
MIN
2.35
1
TYP
3.0
1
2.6
2
0.1
MAX
3.6
3.6
4
3.5
2
5
3.6
14.4
12.6
7.2
18
UNITS
V
V
mA
mA
mA
μA
μA
mW
mW
mW
μW
μW
CS
= 0V, SCK = 0V or V
DD
f
SMPL
= 3Msps
f
SMPL
= 1Msps
–40°C to 85°C
85°C to 125°C
CS
= 0V, SCK = 0V or V
DD
f
SMPL
= 3Msps
f
SMPL
= 1Msps
–40°C to 85°C
85°C to 125°C
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P
D
7.8
6
0.3
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LTC2365/LTC2366
range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
f
SMPL(MAX)
f
SCK
t
SCK
t
THROUGHPUT
t
ACQ
t
CONV
t
QUIET
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
9
t
POWER-UP
PARAMETER
Maximum Sampling Frequency
Shift Clock Frequency
Shift Clock Period
Minimum Throughput Time, t
ACQ
+ t
CONV
Acquisition Time
Conversion Time
SDO Hi-Z State to
CS↓
SCK↓ Setup Time After
CS↓
SDO Enabled Time After
CS↓
SDO Data Valid Access Time After SCK↓
SCK Low Time
SCK High Time
SDO Data Valid Hold Time After SCK↓
SDO Into Hi-Z State Time After SCK↓
SDO Into Hi-Z State Time After
CS↑
Power-Up Time from Sleep Mode
(Notes 8, 9, 11)
(Notes 9, 12)
(Notes 9, 12)
See Sleep Mode section
(Notes 8, 9)
(Notes 8)
(Notes 9, 11, 12)
(Notes 8, 9, 11)
Minimum Positive or Negative
CS
Pulse Width (Notes 8)
TIMING CHARACTERISTICS
The
l
denotes the specifications which apply over the full operating temperature
CONDITIONS
(Notes 8, 9)
(Notes 8, 9, 10)
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l
LTC2365
MIN
TYP MAX
1
0.5
62.5
181.5
818.5
4
4
6
2000
4
15
40%
40%
5
5
30
4.2
1000
16
2000
1000
LTC2366
MIN
TYP MAX UNITS
3
0.5
20.8
56
277
4
4
6
2000
4
15
40%
40%
5
5
14
4.2
333
48
2000
333
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
SCK
t
SCK
ns
ns
ns
ns
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:
When this pin, A
IN
, is taken below GND or above V
DD
, it will be
clamped by internal diodes. These products can handle input currents
greater than 100mA below GND or above V
DD
without latchup.
Note 4:
V
DD
= OV
DD
= V
REF
= 2.35V to 3.6V, f
SMPL
= f
SMPL(MAX)
and
f
SCK
= f
SCK(MAX)
unless otherwise specified.
Note 5:
Integral linearity 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 6:
Linearity, offset and gain specifications apply for a single-ended
A
IN
input with respect to GND.
Note 7:
Typical RMS noise at code transitions.
Note 8:
Guaranteed by characterization. All input signals are specified with
t
r
= t
f
= 2ns (10% to 90% of V
DD
) and timed from a voltage level of 1.6V.
Note 9:
All timing specifications given are with a 10pF capacitance load.
With a capacitance load greater than this value, a digital buffer or latch
must be used.
Note 10:
Minimum f
SCK
at which specifications are guaranteed.
Note 11:
The time required for the output to cross the V
IH
or V
IL
voltage.
Note 12:
Guaranteed by design, not subject to test.
Note 13:
High temperatures degrade operating lifetimes. Operating lifetime
is derated at temperatures greater than 105°C.
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