ADC. LTC2382CMS-16 Datasheet

LTC2382CMS-16 Datasheet PDF

Part LTC2382CMS-16
Description Low Power SAR ADC
Feature LTC2382CMS-16; LTC2382-16 16-Bit, 500ksps, Low Power SAR ADC with Serial Interface FEATURES nn 500ksps Throughput .
Manufacture Linear Technology
Datasheet
Download LTC2382CMS-16 Datasheet




LTC2382CMS-16
LTC2382-16
16-Bit, 500ksps, Low Power
SAR ADC with Serial Interface
FEATURES
nn 500ksps Throughput Rate
nn ±2LSB INL (Max)
nn Guaranteed 16-Bit No Missing Codes
nn Low Power: 6.5mW at 500ksps, 13µW at 1ksps
nn 92dB SNR (Typ) at fIN = 20kHz
nn Extended Acquisition Time of 1.25µs Allows Use of
Lower Power Drivers
nn Guaranteed Operation to 125°C
nn 2.5V Supply
nn Fully Differential Input Range ±2.5V
nn External 2.5V Reference Input
nn No Pipeline Delay, No Cycle Latency
nn 1.8V to 5V I/O Voltages
nn SPI-Compatible Serial I/O with Daisy-Chain Mode
nn Internal Conversion Clock
nn 16-Pin MSOP and 4mm × 3mm DFN Packages
APPLICATIONS
nn Medical Imaging
nn High Speed Data Acquisition
nn Portable or Compact Instrumentation
nn Industrial Process Control
nn Low Power Battery-Operated Instrumentation
nn ATE
DESCRIPTION
The LTC®2382-16 is a low noise, low power, high speed
16-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2382-16 has a
±2.5V fully differential input range. The LTC2382-16
consumes only 6.5mW and achieves ±2LSB INL max, no
missing codes at 16-bits and 92dB SNR.
The LTC2382-16 has a high speed SPI-compatible serial
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 LTC2382-16
ideally suited for a wide variety of high speed applicat­ ions.
An internal oscillator sets the conversion time, easing exter-
nal timing considerations. The LTC2382-16 automatically
powers down between conversions, leadi­ng to reduced
power dissipation that scales with the sampling rate.
The LTC2382-16 features a proprietary sampling archi-
tecture that enables the ADC to begin acquiring the next
sample during the current conversion. The resulting
extended acquisition time of 1.25µs allows the use of
extremely low power ADC drivers.
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.
TYPICAL APPLICATION
2.5V 1.8V TO 5V
ANALOG INPUT
0V TO 2.5V
50Ω
LT6350
50Ω
SINGLE-ENDED-
TO-DIFFERENTIAL
DRIVER
10µF
0.1µF
100Ω
3300pF
100Ω
IN+
VDD
OVDD
LTC2382-16
IN
REF
GND
2.5V
CHAIN
RDL/SDI
SDO
SCK
BUSY
CNV
238216 TA01
47µF
(X5R, 0805 SIZE)
SAMPLE CLOCK
For more information www.linear.com/LTC2382-16
32k Point FFT fS = 500ksps, fIN = 20kHz
0
SNR = 92.2dB
–20
THD = –106dB
SINAD = 92dB
–40
SFDR = 107dB
–60
–80
–100
–120
–140
–160
–180
0
50 100 150 200 250
FREQUENCY (kHz)
238216 TA02a
238216fa
1



LTC2382CMS-16
LTC2382-16
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (VDD)................................................2.8V
Supply Voltage (OVDD).................................................6V
Reference Input (REF)...............................................2.8V
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
LTC2382C................................................. 0°C to 70°C
LTC2382I..............................................–40°C to 85°C
LTC2382H........................................... –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 = 43°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 (4mm × 5mm) PLASTIC MSOP
TJMAX = 150°C, θJA = 110°C/W
ORDER INFORMATION http://www.linear.com/product/LTC2382-16#orderinfo
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2382CMS-16#PBF LTC2382CMS-16#TRPBF 238216
16-Lead Plastic MSOP
0°C to 70°C
LTC2382IMS-16#PBF
LTC2382IMS-16#TRPBF 238216
16-Lead Plastic MSOP
–40°C to 85°C
LTC2382HMS-16#PBF LTC2382HMS-16#TRPBF 238216
16-Lead Plastic MSOP
–40°C to 125°C
LTC2382CDE-16#PBF
LTC2382CDE-16#TRPBF 23826
16-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
LTC2382IDE-16#PBF
LTC2382IDE-16#TRPBF 23826
16-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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.
238216fa
2
For more information www.linear.com/LTC2382-16



LTC2382CMS-16
LTC2382-16
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
VIN+
VIN
VIN+ – VIN
VCM
Absolute Input Range (IN+)
Absolute Input Range (IN)
Input Differential Voltage range
Common-Mode Input Range
(Note 5)
(Note 5)
VIN = VIN+ – VIN
l –0.05
l –0.05
l –VREF
l VREF/2–
0.05
VREF/2
VREF
VREF
+VREF
VREF/2+
0.05
IIN
Analog Input Leakage Current
CIN
Analog Input Capacitance
Sample Mode
Hold Mode
l
±1
45
5
CMRR
Input Common Mode Rejection Ratio
70
UNITS
V
V
V
V
µA
pF
pF
dB
CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Resolution
l 16
Bits
No Missing Codes
l 16
Bits
Transition Noise
INL
Integral Linearity Error
(Note 6)
0.6
l –2
±0.9
LSBRMS
2
LSB
DNL
Differential Linearity Error
l –1
±0.4
1
LSB
BZE
Bipolar Zero-Scale Error
(Note 7)
l –6 ±0.25
6
LSB
Bipolar Zero-Scale Error Drift
3
mLSB/°C
FSE
Bipolar Full-Scale Error
(Note 7)
l –14
±3
14
LSB
Bipolar Full-Scale Error Drift
±0.1
ppm/°C
DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C and AIN = –1dBFS. (Notes 4, 8)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
SINAD
SNR
THD
SFDR
Signal-to-(Noise + Distortion) Ratio
Signal-to-Noise Ratio
Total Harmonic Distortion
Spurious Free Dynamic Range
fIN = 20kHz
fIN = 20kHz
fIN = 20kHz, First 5 Harmonics
fIN = 20kHz
l 88.5
92
dB
l 89
92
dB
l
–106 –99
dB
107
dB
–3dB Input Bandwidth
30
MHz
Aperture Delay
2
ns
Aperture Jitter
30
ps
Transient Response
Full-Scale Step
250
ns
For more information www.linear.com/LTC2382-16
238216fa
3







@ 2014 :: Datasheetspdf.com ::
Semiconductors datasheet search & download site (Privacy Policy & Contact)