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LTC2355IMSE-12#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
LTC2355-12/LTC2355-14
1
2355fb
For more information www.linear.com/LTC2355-12
BLOCK DIAGRAM
FEATURES
APPLICATIONS
DESCRIPTION
Serial 12-Bit/14-Bit, 3.5Msps
Sampling ADCs with Shutdown
The LTC
®
2355-12/LTC2355-14 are 12-bit/14-bit, 3.5Msps
serial ADCs with differential inputs. The devices draw
only 5.5mA from a single 3.3V supply and come in a
tiny 10-lead MSOP package. A Sleep shutdown feature
further reduces power consumption to 13µW. The com
-
bination of speed, low power and tiny package makes the
LTC2355-12/LTC2355-14 suitable for high speed, portable
applications.
The 80dB common mode rejection allows users to eliminate
ground loops and common mode noise by measuring
signals differentially from the source.
The devices convert 0V to 2.5V unipolar inputs differentially.
The absolute voltage swing for A
IN
+
and A
IN
–
extends from
ground to the supply voltage.
The serial interface sends out the conversion results during
the 16 clock cycles following a CONV rising edge for com
-
patibility with standard serial interfaces. If two additional
clock cycles for acquisition time are allowed after the data
stream in between conversions, the full sampling rate of
3.5Msps can be achieved with a 63MHz clock.
n
3.5Msps Conversion Rate
n
74.2dB SINAD at 14-Bits, 71.1dB SINAD at 12-Bits
n
Low Power Dissipation: 18mW
n
3.3V Single Supply Operation
n
2.5V Internal Bandgap Reference can be Overdriven
n
3-Wire SPI-Compatible Serial Interface
n
Sleep (13µW) Shutdown Mode
n
Nap (4mW) Shutdown Mode
n
80dB Common Mode Rejection
n
0V to 2.5V Unipolar Input Range
n
Tiny 10-Lead MSOP Package
n
Communications
n
Data Acquisition Systems
n
Uninterrupted Power Supplies
n
Multiphase Motor Control
n
Multiplexed Data Acquisition
n
RFID
THD, 2nd, 3rd and SFDR
vs Input Frequency
–
+
1
2
7
3
4
S & H
GND
EXPOSED PAD
LTC2355-14
V
REF
10µF
A
IN
–
A
IN
+
14-BIT ADC
3.3V10µF
14
14-BIT LATCH
8
10
9
THREE-
STATE
SERIAL
OUTPUT
PORT
2.5V
REFERENCE
TIMING
LOGIC
V
DD
SDO
CONV
SCK
2355 TA01
5 6 11
FREQUENCY (MHz)
0.1
–80
THD, 2nd, 3rd (dB)
–74
–68
–62
–56
1 10 100
2355 G02
–86
–92
–98
–104
–110
–50
THD
2nd
3rd
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
LTC2355-12/LTC2355-14
2
2355fb
For more information www.linear.com/LTC2355-12
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
DD
) ..................................................4V
Analog and V
REF
Input Voltages
(Note 3) ....................................–0.3V to (V
DD
+ 0.3V)
Digital Input Voltages ................... – 0.3V to (V
DD
+ 0.3V)
Digital Output Voltage ...................–0.3V to (V
DD
+ 0.3V)
Power Dissipation ...............................................100mW
Operation Temperature Range
LTC2355C-12/LTC2355C-14 ..................... 0°C to 70°C
LTC2355I-12/LTC2355I-14 ...................–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ...................300°C
(Notes 1, 2)
CONVERTER CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. With internal reference. V
DD
= 3.3V.
PARAMETER CONDITIONS
LTC2355-12 LTC2355-14
UNITSMIN TYP MAX MIN TYP MAX
Resolution (No Missing Codes)
l
12 14 Bits
Integral Linearity Error (Notes 4, 5, 18)
l
–2 ±0.25 2 –4 ±0.5 4 LSB
Offset Error (Notes 4, 18)
l
–10 ±1 10 –20 ±2 20 LSB
Gain Error (Note 4, 18)
l
–30 ±5 30 –80 ±10 80 LSB
Gain Tempco Internal Reference (Note 4)
External Reference
±15
±1
±15
±1
ppm/°C
ppm/°C
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2355CMSE-12#PBF LTC2355CMSE-12#TRPBF LTCVX 10-Lead Plastic MSOP 0°C to 70°C
LTC2355IMSE-12#PBF LTC2355IMSE-12#TRPBF LTCVX 10-Lead Plastic MSOP –40°C to 85°C
LTC2355CMSE-14#PBF LTC2355CMSE-14#TRPBF LTCVY 10-Lead Plastic MSOP 0°C to 70°C
LTC2355IMSE-14#PBF LTC2355IMSE-14#TRPBF LTCVY 10-Lead Plastic MSOP –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.
Consult LTC Marketing for information on non-standard 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/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
PIN CONFIGURATION
1
2
3
4
5
A
IN
+
A
IN
–
V
REF
GND
GND
10
9
8
7
6
CONV
SCK
SDO
V
DD
GND
TOP VIEW
11
GND
MSE PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 125°C, θ
JA
= 40°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
http://www.linear.com/product/LTC2355-12#orderinfo
LTC2355-12/LTC2355-14
3
2355fb
For more information www.linear.com/LTC2355-12
DYNAMIC ACCURACY
The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C with external reference = 2.55V. V
DD
= 3.3V.
ANALOG INPUT
The l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. With internal reference. V
DD
= 3.3V.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Differential Input Range (Notes 3, 8, 9) 3.1V ≤ V
DD
≤ 3.6V
l
0 to 2.5 V
V
CM
Analog Common Mode + Differential
Input Range (Note 10)
0 to V
DD
V
I
IN
Analog Input Leakage Current
l
1 µA
C
IN
Analog Input Capacitance (Note 19) 13 pF
t
ACQ
Sample-and-Hold Acquisition Time (Note 6)
l
39 ns
t
AP
Sample-and-Hold Aperture Delay Time 1 ns
t
JITTER
Sample-and-Hold Aperture Delay Time Jitter 0.3 ps
CMRR Analog Input Common Mode Rejection Ratio f
IN
= 1MHz, V
IN
= 0V to 3V
f
IN
= 100MHz, V
IN
= 0V to 3V
–60
–15
dB
dB
SYMBOL PARAMETER CONDITIONS
LTC2355-12 LTC2355-14
UNITSMIN TYP MAX MIN TYP MAX
SINAD Signal-to-Noise Plus
Distortion Ratio
100kHz Input Signal
1.4MHz Input Signal
l
69
71.1
71.1
71
74.2
73.8
dB
dB
THD Total Harmonic
Distortion
100kHz First 5 Harmonics
1.4MHz First 5 Harmonics
l
–86
–82
–76
–86
–82
–78
dB
dB
SFDR Spurious Free
Dynamic Range
100kHz Input Signal
1.4MHz Input Signal
86
82
86
82
dB
dB
IMD Intermodulation
Distortion
1.25V to 2.5V 1.25MHz into A
IN
+
, 0V to 1.25V,
1.2MHz into A
IN
–
–82 –82 dB
dB
Code-to-Code
Transition Noise
V
REF
= 2.5V (Note 18) 0.25 1 LSB
RMS
Full Power Bandwidth V
IN
= 2.5V
P-P
, SDO = 11585LSB
P-P
(Note 15) 50 50 MHz
Full Linear Bandwidth S/(N + D) ≥ 68dB 5 5 MHz
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.5 V
V
REF
Output Tempco 15 ppm/°C
V
REF
Line Regulation V
DD
= 3.1V to 3.6V, V
REF
= 2.5V 600 µV/V
V
REF
Output Resistance Load Current = 0.5mA 0.2 Ω
V
REF
Settling Time C
REF
= 10µF 2 ms
External V
REF
Input Range 2.55 V
DD
V
INTERNAL REFERENCE CHARACTERISTICS
The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C, V
DD
= 3.3V.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LTC2355IMSE-12#TRPBF

Mfr. #:
Buy LTC2355IMSE-12#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 12-Bit, 3.5 Msps Serial ADC Unipolar
Lifecycle:
New from this manufacturer.
Delivery:
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