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LTC2344-16 の電気的特性と機能

LTC2344-16のメーカーはLinear Technologyです、この部品の機能は「400ksps/ch Differential SoftSpan ADC」です。


製品の詳細 ( Datasheet PDF )

部品番号 LTC2344-16
部品説明 400ksps/ch Differential SoftSpan ADC
メーカ Linear Technology
ロゴ Linear Technology ロゴ 




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LTC2344-16 Datasheet, LTC2344-16 PDF,ピン配置, 機能
FEATURES
LTC2344-16
Quad, 16-Bit, 400ksps/ch
Differential SoftSpan ADC with
Wide Input Common Mode Range
DESCRIPTION
nn 400ksps per Channel Throughput
nn Four Simultaneous Sampling Channels
nn ±1.25LSB INL (Maximum)
nn Guaranteed 16-Bit, No Missing Codes
nn Differential, Wide Common Mode Range Inputs
nn Per-Channel SoftSpan Input Ranges:
±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V
±5V, 0V to 5V, ±2.5V, 0V to 2.5V
nn 93.4dB Single-Conversion SNR (Typical)
nn −114dB THD (Typical) at fIN = 2kHz
nn 102dB CMRR (Typical) at fIN = 200Hz
nn Rail-to-Rail Input Overdrive Tolerance
nn Guaranteed Operation to 125°C
nn Integrated Reference and Buffer (4.096V)
nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O
nn Internal Conversion Clock, No Cycle Latency
nn 81mW Power Dissipation (Typical)
nn 32-Lead (5mm × 5mm) QFN Package
APPLICATIONS
nn Programmable Logic Controllers
nn Industrial Process Control
nn Medical Imaging
nn High Speed Data Acquisition
The LTC®2344-16 is a 16-bit, low noise 4-channel simulta-
neous sampling successive approximation register (SAR)
ADC with differential, wide common mode range inputs.
Operating from a 5V supply and using the internal reference
and buffer, each channel of this SoftSpanTM ADC can be
independently configured on a conversion-by-conversion
basis to accept ±4.096V, 0V to 4.096V, ±2.048V, or 0V to
2.048V signals. Individual channels may also be disabled
to increase throughput on the remaining channels.
The wide input common mode range and 102dB CMRR of
the LTC2344-16 analog inputs allow the ADC to directly
digitize a variety of signals, simplifying signal chain design.
This input signal flexibility, combined with ±1.25LSB INL,
no missing codes at 16 bits, and 93.4dB SNR, makes the
LTC2344-16 an ideal choice for many applications requir-
ing wide dynamic range.
The LTC2344-16 supports pin-selectable SPI CMOS (1.8V
to 5V) and LVDS serial interfaces. Between one and four
lanes of data output may be employed in CMOS mode,
allowing the user to optimize bus width and throughput.
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, 7961132, 8319673,
9197235.
TYPICAL APPLICATION
ARBITRARY
5V
FULLY
DIFFERENTIAL
5V
0V
BIPOLAR
5V
0V
UNIPOLAR
5V
0V 0V
DIFFERENTIAL INPUTS IN+/IN– WITH
WIDE INPUT COMMON MODE RANGE
IINN00+– S/H
S/H
S/H
IINN33+– S/H
FOUR SIMULTANEOUS
SAMPLING CHANNELS
5V
0.1µF
2.2µF
1.8V TO 5V
0.1µF
VDD VDDLBYP
LTC2344-16
CMOS OR LVDS
I/O INTERFACE
OVDD LVDS/CMOS
PD
SDO0
MUX
16-BIT
SAR ADC
REFBUF REFIN GND
47µF 0.1µF
SDO3
SCKO
SCKI
SDI
CS
BUSY
CNV
234416 TA01a
SAMPLE
CLOCK
For more information www.linear.com/LTC2344-16
Integral Nonlinearity
vs Output Code and Channel
1.00
0.75 FULLY DIFFERENTIAL DR±IV4E.0(9I6NV=RANING+E)
ALL CHANNELS
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–32768
–16384
0
16384 32768
OUTPUT CODE
234416 TA01b
234416f
1

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LTC2344-16 pdf, ピン配列
LTC2344-16
E LECTRICAL 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+
Absolute Input Range
(IN0+ to IN3+)
(Note 6)
l0
VDD
VIN
Absolute Input Range
(IN0to IN3)
(Note 6)
l0
VDD
VIN+ – VIN– Input Differential Voltage
Range
SoftSpan 7: ±VREFBUF Range (Note 6)
SoftSpan
SoftSpan
6:
5:
±0VVRtEoFVBURFE/F1B.U0F24RaRnagnege(N(Nootete66) )
SoftSpan 4: 0V to VREFBUF/1.024 Range (Note 6)
SoftSpan 3: ±0.5 • VREFBUF Range (Note 6)
SoftSpan
SoftSpan
2:
1:
±00V.5to•0V.5REFVBURFE/F1B.U0F24RaRnagneg(eN(oNtoet6e)6)
VCM
Input Common Mode Voltage (Note 6)
Range
l – VREFBUF
l
l
– VREFB0UF/1.024
l0
l –0.5 • VREFBUF
l
l
–0.5 • VRE0FBUF/1.024
l0
VREFBUF
VREVFRBUEFFB/1U.F024
VREFBUF/1.024
0.5 • VREFBUF
0.50•.5VREVFRBUEFFB/1U.F024
VDD
VIN+ – VIN
Input Differential Overdrive
Tolerance
(Note 7)
l −VDD
VDD
IIN Analog Input Leakage Current
CIN Analog Input Capacitance Sample Mode
Hold Mode
l –1
1
90
10
CMRR
Input Common Mode
Rejection Ratio
VIN+ = VIN− = 3.6VP-P 200Hz Sine
l 87 102
VIHCNV
VILCNV
IINCNV
CNV High Level Input Voltage
CNV Low Level Input Voltage
CNV Input Current
VIN = 0V to VDD
l 1.3
l
l –10
0.5
10
UNITS
V
V
V
V
V
V
V
V
V
V
V
µA
pF
pF
dB
V
V
μA
CONVERTER CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 8)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Resolution
l 16
Bits
No Missing Codes
l 16
Bits
Transition Noise
SoftSpans 7 and 6: ±4.096V and ±4V Ranges
SoftSpans 5 and 4: 0V to 4.096V and 0V to 4V Ranges
SoftSpans 3 and 2: ±2.048V and ±2V Ranges
SoftSpan 1: 0V to 2.048V Range
INL Integral Linearity Error (Note 9)
l –1.25
0.39
0.76
0.76
1.6
±0.30
LSBRMS
LSBRMS
LSBRMS
LSBRMS
1.25 LSB
DNL Differential Linearity Error (Note 10)
l −0.9
±0.20
0.9
LSB
ZSE Zero-Scale Error
(Note 11)
l −500
±65
500
μV
Zero-Scale Error Drift
±2 μV/°C
FSE Full-Scale Error
VREFBUF = 4.096V (REFBUF Overdriven) (Note 11)
Full-Scale Error Drift
l −0.13
±0.025
±2.5
0.13 %FS
ppm/°C
For more information www.linear.com/LTC2344-16
234416f
3


3Pages


LTC2344-16 電子部品, 半導体
LTC2344-16
POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 8)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
CMOS I/O Mode
VDD
OVDD
IVDD
Supply Voltage
Supply Voltage
Supply Current
l 4.75 5.00 5.25
l 1.71
5.25
400ksps Sample Rate, 4 Channels Enabled
400ksps Sample Rate, 4 Channels Enabled, VREFBUF = 5V (Note 14)
Acquisition Mode
Power Down Mode (C-Grade and I-Grade)
Power Down Mode (H-Grade)
l
l
l
l
l
15.1 17.6
13.5 16.0
1.2 2.0
65 225
65 500
V
V
mA
mA
mA
μA
µA
IOVDD
Supply Current
400ksps Sample Rate, 4 Channels Enabled (CL = 25pF)
Acquisition Mode
Power Down Mode
l
l
l
2.0 3.0
1 20
1 20
mA
μA
μA
PD Power Dissipation
400ksps Sample Rate, 4 Channels Enabled
Acquisition Mode
Power Down Mode (C-Grade and I-Grade)
Power Down Mode (H-Grade)
l
81 96
mW
l
6.0 10
mW
l
0.33 1.2
mW
l
0.33 2.6
mW
LVDS I/O Mode
VDD
OVDD
IVDD
Supply Voltage
Supply Voltage
Supply Current
l 4.75
l 2.375
400ksps Sample Rate, 4 Channels Enabled
400ksps Sample Rate, 4 Channels Enabled, VREFBUF = 5V (Note 14)
Acquisition Mode
Power Down Mode (C-Grade and I-Grade)
Power Down Mode (H-Grade)
l
l
l
l
l
5.00
17.4
15.7
2.8
65
65
5.25
5.25
20.5
18.1
3.8
225
500
V
V
mA
mA
mA
μA
µA
IOVDD
Supply Current
400ksps Sample Rate, 4 Channels Enabled (RL = 100Ω)
APcoqwueirsiDtioown nMModoede(RL = 100Ω)
l
l
l
7.4 9.1
7 8.2
1 20
mA
mA
μA
PD Power Dissipation
400ksps Sample Rate, 4 Channels Enabled
Acquisition Mode
Power Down Mode (C-Grade and I-Grade)
Power Down Mode (H-Grade)
l
106 126
mW
l
32 40
mW
l
0.33 1.2
mW
l
0.33 2.6
mW
A DC TIMING CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 8)
SYMBOL
fSMPL
PARAMETER
Maximum Sampling Frequency
tCYC Time Between Conversions
CONDITIONS
MIN TYP MAX UNITS
4 Channels Enabled
3 Channels Enabled
2 Channels Enabled
1 Channel Enabled
l
l
l
l
400 ksps
500 ksps
666 ksps
1000 ksps
4
3
Channels
Channels
Enabled,
Enabled,
ffSSMMPPLL
=
=
400ksps
500ksps
2 Channels Enabled, fSMPL = 666ksps
1 Channel Enabled, fSMPL = 1000ksps
l
l
l
l
2500
2000
1500
1000
ns
ns
ns
ns
234416f
6 For more information www.linear.com/LTC2344-16

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
LTC2344-16

400ksps/ch Differential SoftSpan ADC

Linear Technology
Linear Technology
LTC2344-18

400ksps/ch Differential SoftSpan ADC

Linear Technology
Linear Technology


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