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Linear Technology Electronic Components Datasheet

LTC2387CUH-18 Datasheet

15Msps SAR ADC

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Features
nn 15Msps Throughput Rate
nn No Pipeline Delay, No Cycle Latency
nn 95.7dB SNR (Typ) at fIN = 1MHz
nn 102dB SFDR (Typ) at fIN = 1MHz
nn Nyquist Sampling Up to 7.5MHz Input
nn Guaranteed 18-Bit, No Missing Codes
nn ±3LSB INL (Max)
nn 8.192VP-P Differential Inputs
nn 5V and 2.5V Supplies
nn Internal 20ppm/°C (Max) Reference
nn Serial LVDS Interface
nn 125mW Power Dissipation
nn 32-Pin (5mm × 5mm) QFN Package
Applications
nn High Speed Data Acquisition
nn Imaging
nn Communications
nn Control Loops
nn Instrumentation
nn ATE
LTC2387-18
18-Bit, 15Msps SAR ADC
Description
The LTC®2387-18 is a low noise, high speed, 18-bit 15Msps
successive approximation register (SAR) ADC ideally
suited for a wide range of applications. The combination
of excellent linearity and wide dynamic range makes the
LTC2387-18 ideal for high speed imaging and instru-
mentation applications. No latency operation provides a
unique solution for high speed control loop applications.
The very low distortion at high input frequencies enables
communications applications requiring wide dynamic
range and significant signal bandwidth.
To support high speed operation while minimizing the
number of data lines, the LTC2387-18 features a serial
LVDS digital interface. The LVDS interface has one-lane
and two-lane output modes, allowing the user to optimize
the interface data rate for each application.
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.
Protected by U.S. Patents, including 7705765, 8232905, 8810443. Other patents are pending.
Typical Application
4.096V
0V
4.096V
0V
0.1µF
5V
0.1µF
2.5V 2.5V
0.1µF
24.9Ω
VDD
IN+
+
82pF
VDDL OVDD
CLK
DCO
LVDS
DA
INTERFACE
DB
LTC2387-18
24.9Ω
82pF
IN
TWOLANES
TESTPAT
PD
0.1µF
VCM
REFBUF REFGND REFIN
CNV
GND
SAMPLE
CLOCK
10µF
0.1µF
238718 TA01a
FFT, fSMPL = 15Msps, fIN = 2kHz
fIN = 2kHz
0
SNR = 96.0dB
–20
THD = –117dB
SINAD = 95.7dB
–40
SFDR = 119dB
–60
–80
–100
–120
–140
–160
0
2.5
5
FREQUENCY (MHz)
7.5
238718 TA01b
For more information www.linear.com/LTC2387-18
238718fa
1


Linear Technology Electronic Components Datasheet

LTC2387CUH-18 Datasheet

15Msps SAR ADC

No Preview Available !

LTC2387-18
Absolute Maximum Ratings
(Notes 1, 2)
Supply Voltage (VDD)...................................................6V
Supply Voltage (VDDL, OVDD)....................................2.8V
Analog Input Voltage (Note 3)
IN+, IN..........................(GND – 0.3V) to (VDD + 0.3V)
REFBUF..........................(GND – 0.3V) to (VDD + 0.3V)
REFIN (Note 4)............................(GND – 0.3V) to 2.8V
Digital Input Voltage (Note 3)
PD, TESTPAT.............. (GND – 0.3V) to (OVDD + 0.3V)
CLK+, CLK................. (GND – 0.3V) to (OVDD + 0.3V)
TWOLANES, CNV+,
CNV............................(GND – 0.3V) to (VDDL + 0.3V)
Power Dissipation............................................... 500mW
Operating Temperature Range
LTC2387C................................................. 0°C to 70°C
LTC2387I..............................................–40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
TOP VIEW
GND 1
IN+ 2
IN3
GND 4
REFGND 5
REFGND 6
REFBUF 7
REFBUF 8
32 31 30 29 28 27 26 25
24 CLK+
23 CLK
22 OVDD
33
21 GND
GND
20 DCO+
19 DCO
18 DA+
17 DA
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2387CUH-18#PBF
LTC2387CUH-18#TRPBF 238718
32-Lead (5mm × 5mm) Plastic QFN
0°C to 70°C
LTC2387IUH-18#PBF
LTC2387IUH-18#TRPBF 238718
32-Lead (5mm × 5mm) Plastic QFN
–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.
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
VIN+
VIN–
VIN+ – VIN–
VINCM
Absolute Input Range (IN+)
Absolute Input Range (IN)
Input Differential Voltage Range
Common Mode Input Range
(Note 6)
(Note 6)
VIN+ – VIN–
(VIN+ + VIN–)/2
l
–0.1
l
–0.1
l
–VREFBUF
l VREFBUF/2 – 0.1
VREFBUF/2
VREFBUF + 0.1
VREFBUF + 0.1
VREFBUF
VREFBUF/2 + 0.1
IIN
Analog Input DC Leakage Current
l
–1
1
CIN
Analog Input Capacitance
Sample Mode
20
Hold Mode
2
CMRR
Input Common Mode Rejection Ratio
fIN = 1MHz
75
UNITS
V
V
V
V
μA
pF
pF
dB
238718fa
2
For more information www.linear.com/LTC2387-18


Part Number LTC2387CUH-18
Description 15Msps SAR ADC
Maker Linear
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LTC2387CUH-18 Datasheet PDF






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