LTC2367-18 ADC Datasheet

LTC2367-18 Datasheet PDF, Equivalent


Part Number

LTC2367-18

Description

Pseudo Differential Unipolar SAR ADC

Manufacture

Linear

Total Page 24 Pages
PDF Download
Download LTC2367-18 Datasheet PDF


LTC2367-18
FEATURES
n 500ksps Throughput Rate
n ±2.5LSB INL (Max)
n Guaranteed 18-Bit No Missing Codes
n Low Power: 6.8mW at 500ksps, 6.8µW at 500sps
n 97dB SNR (Typ) at fIN = 2kHz
n120dB 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
LTC2367-18
18-Bit, 500ksps, Pseudo-
Differential Unipolar SAR
ADC with 97dB SNR
DESCRIPTION
The LTC®2367-18 is a low noise, low power, high speed
18-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2367-18 has a 0V
to VREF pseudo-differential unipolar input range with VREF
ranging from 2.5V to 5.1V. The LTC2367-18 consumes only
6.8mW and achieves ±2.5LSB INL maximum, no missing
codes at 18 bits with 97dB SNR.
The LTC2367-18 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 500ksps
throughput with no cycle latency makes the LTC2367-18
ideally suited for a wide variety of high speed applications.
An internal oscillator sets the conversion time, easing exter-
nal timing considerations. The LTC2367-18 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
IN+
VDD
OVDD
CHAIN
RDL/SDI
10nF
LTC2367-18
SDO
SCK
INBUSY
REF GND CNV
2.5V TO 5.1V
236718 TA01a
47µF
(X5R, 0805 SIZE)
SAMPLE CLOCK
32k Point FFT fS = 500ksps, fIN = 2kHz
0 SNR = 97.2dB
–20 THD = –120dB
SINAD = 97.1dB
–40 SFDR = 122dB
–60
–80
–100
–120
–140
–160
–180
0
50 100 150 200 250
FREQUENCY (kHz)
236718 TA01b
236718f
1

LTC2367-18
LTC2367-18
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
LTC2367C................................................. 0°C to 70°C
LTC2367I..............................................–40°C to 85°C
LTC2367H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
CHAIN
VDD
GND
IN+
IN
GND
REF
REF
1
2
3
4
5
6
7
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
GVIINDNNDD+–
2
3
4
5
GND 6
REF 7
REF 8
16 GND
15
14
SODVDOD
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
LTC2367CMS-18#PBF
LTC2367CMS-18#TRPBF 236718
16-Lead Plastic MSOP
0°C to 70°C
LTC2367IMS-18#PBF
LTC2367IMS-18#TRPBF 236718
16-Lead Plastic MSOP
–40°C to 85°C
LTC2367HMS-18#PBF
LTC2367HMS-18#TRPBF 236718
16-Lead Plastic MSOP
–40°C to 125°C
LTC2367CDE-18#PBF
LTC2367CDE-18#TRPBF 23678
16-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
LTC2367IDE-18#PBF
LTC2367IDE-18#TRPBF 23678
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/
236718f
2


Features FEATURES n 500ksps Throughput Rate n 2.5LSB INL (Max) n Guaranteed 18-Bit No Missing Codes n Low Power: 6.8mW at 500ksps, 6.8µW at 500sps 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-Dif ferential Unipolar Input Range: 0V to V REF n VREF Input Range from 2.5V to 5.1 V n No Pipeline Delay, No Cycle Latenc y n 1.8V to 5V I/O Voltages n SPI-Com patible Serial I/O with Daisy-Chain Mod e n Internal Conversion Clock n 16-Le ad MSOP and 4mm × 3mm DFN Packages APP LICATIONS n Medical Imaging n High Sp eed Data Acquisition n Portable or Com pact Instrumentation n Industrial Proc ess Control n Low Power Battery-Operat ed Instrumentation n ATE LTC2367-18 18 -Bit, 500ksps, PseudoDifferential Unipo lar SAR ADC with 97dB SNR DESCRIPTION T he LTC®2367-18 is a low noise, low pow er, high speed 18-bit successive approx imation register (SAR) ADC. Operating f rom a 2.5V supply, the LTC2367-18 has a 0V to VREF pseudo-differential.
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