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Linear Technology Electronic Components Datasheet

LTC2364CMS-18 Datasheet

Pseudo Differential Unipolar SAR ADC

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FEATURES
n 250ksps Throughput Rate
n ±2.5LSB INL (Max)
n Guaranteed 18-Bit No Missing Codes
n Low Power: 3.4mW at 250ksps, 3.4µW at 250sps
n 97dB SNR (Typ) at fIN = 2kHz
n 120dB THD (Typ) at fIN = 2kHz
n Guaranteed Operation to 125°C
n 2.5V Supply
n Pseudo-Differential Unipolar Input Range: 0V to VREF
n VREF Input Range from 2.5V to 5.1V
n No Pipeline Delay, No Cycle Latency
n 1.8V to 5V I/O Voltages
n SPI-Compatible Serial I/O with Daisy-Chain Mode
n Internal Conversion Clock
n 16-Lead MSOP and 4mm × 3mm DFN Packages
APPLICATIONS
n Medical Imaging
n High Speed Data Acquisition
n Portable or Compact Instrumentation
n Industrial Process Control
n Low Power Battery-Operated Instrumentation
n ATE
LTC2364-18
18-Bit, 250ksps, Pseudo-
Differential Unipolar SAR
ADC with 97dB SNR
DESCRIPTION
The LTC®2364-18 is a low noise, low power, high speed
18-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2364-18 has a 0V
to VREF pseudo-differential unipolar input range with VREF
ranging from 2.5V to 5.1V. The LTC2364-18 consumes only
3.4mW and achieves ±2.5LSB INL maximum, no missing
codes at 18 bits with 97dB SNR.
The LTC2364-18 has a high speed SPI-compatible se-
rial interface that supports 1.8V, 2.5V, 3.3V and 5V logic
while also featuring a daisy-chain mode. The fast 250ksps
throughput with no cycle latency makes the LTC2364-18
ideally suited for a wide variety of high speed applications.
An internal oscillator sets the conversion time, easing exter-
nal timing considerations. The LTC2364-18 automatically
powers down between conversions, leading to reduced
power dissipation that scales with the sampling rate.
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. Protected by U.S. Patents, including 7705765.
TYPICAL APPLICATION
2.5V 1.8V TO 5V
VREF
0V
+
LT®6202
10µF
0.1µF
10Ω
VDD
OVDD
CHAIN
IN+
RDL/SDI
10nF
LTC2364-18
IN
SDO
SCK
BUSY
REF
GND
CNV
2.5V TO 5.1V
236418 TA01a
47µF
(X5R, 0805 SIZE)
SAMPLE CLOCK
32k Point FFT fS = 250ksps, fIN = 2kHz
0
SNR = 97.2dB
–20
THD = –121dB
SINAD = 97.2dB
–40
SFDR = 125dB
–60
–80
–100
–120
–140
–160
–180
0
25
50
75 100 125
FREQUENCY (kHz)
236418 TA01b
236418f
1


Linear Technology Electronic Components Datasheet

LTC2364CMS-18 Datasheet

Pseudo Differential Unipolar SAR ADC

No Preview Available !

LTC2364-18
ABSOLUTE MAXIMUM RATINGS (Notes 1, 2)
Supply Voltage (VDD)................................................2.8V
Supply Voltage (OVDD).................................................6V
Reference Input (REF)..................................................6V
Analog Input Voltage (Note 3)
IN+, IN..........................(GND – 0.3V) to (REF + 0.3V)
Digital Input Voltage
(Note 3)........................... (GND – 0.3V) to (OVDD + 0.3V)
Digital Output Voltage
(Note 3)........................... (GND – 0.3V) to (OVDD + 0.3V)
Power Dissipation............................................... 500mW
Operating Temperature Range
LTC2364C................................................. 0°C to 70°C
LTC2364I..............................................–40°C to 85°C
LTC2364H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
CHAIN 1
VDD 2
GND 3
IN+ 4
IN5
GND 6
REF 7
REF 8
TOP VIEW
17
GND
16 GND
15 OVDD
14 SDO
13 SCK
12 RDL/SDI
11 BUSY
10 GND
9 CNV
DE PACKAGE
16-LEAD (4mm × 3mm) PLASTIC DFN
TJMAX = 150°C, θJA = 40°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
CHAIN 1
VDD 2
GND 3
IN+ 4
IN5
GND 6
REF 7
REF 8
16 GND
15 OVDD
14 SDO
13 SCK
12 RDL/SDI
11 BUSY
10 GND
9 CNV
MS PACKAGE
16-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 110°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2364CMS-18#PBF
LTC2364CMS-18#TRPBF 236418
16-Lead Plastic MSOP
0°C to 70°C
LTC2364IMS-18#PBF
LTC2364IMS-18#TRPBF 236418
16-Lead Plastic MSOP
–40°C to 85°C
LTC2364HMS-18#PBF
LTC2364HMS-18#TRPBF 236418
16-Lead Plastic MSOP
–40°C to 125°C
LTC2364CDE-18#PBF
LTC2364CDE-18#TRPBF 23648
16-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
LTC2364IDE-18#PBF
LTC2364IDE-18#TRPBF 23648
16-Lead (4mm × 3mm) Plastic DFN
–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/
236418f
2


Part Number LTC2364CMS-18
Description Pseudo Differential Unipolar SAR ADC
Maker Linear
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LTC2364CMS-18 Datasheet PDF






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