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LTC2310-14 の電気的特性と機能

LTC2310-14のメーカーはLinear Technologyです、この部品の機能は「2Msps Differential Input ADC」です。


製品の詳細 ( Datasheet PDF )

部品番号 LTC2310-14
部品説明 2Msps Differential Input ADC
メーカ Linear Technology
ロゴ Linear Technology ロゴ 




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LTC2310-14 Datasheet, LTC2310-14 PDF,ピン配置, 機能
Features
LTC2310-14
14-Bit + Sign, 2Msps
Differential Input ADC with Wide
Input Common Mode Range
Description
nn 2Msps Throughput Rate
nn ±2.5LSB INL Guaranteed
nn Guaranteed 14-Bit, No Missing Codes
nn 8VP-P Differential Inputs with Wide Input Common
Mode Range
nn 82dB SNR (Typ) at fIN = 500kHz
nn –93dB THD (Typ) at fIN = 500kHz
nn No Cycle Latency
nn Guaranteed Operation –40°C to 125°C
nn Single 3.3V or 5V Supply
nn Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal
Reference with 1.25V External Reference Input
nn 1.8V to 2.5V I/O Voltages
nn CMOS or LVDS SPI-Compatible Serial I/O
nn Power Dissipation 35mW at VDD = 5V (Typ)
nn Small 16-Lead (4mm × 5mm) MSOP Package
Applications
nn High Speed Data Acquisition Systems
nn Communications
nn Remote Data Acquisition
nn Imaging
nn Optical Networking
nn Automotive
nn Multiphase Motor Control
The LTC®2310-14 is a low noise, high speed 14-bit +
sign successive approximation register (SAR) ADC with
differential inputs and wide input common mode range.
Operating from a single 3.3V or 5V supply, the LTC2310-14
has an 8VP-P differential input range, making it ideal for
applications which require a wide dynamic range with
high common mode rejection. The LTC2310-14 achieves
±2.5LSB INL guaranteed, no missing codes at 14 bits and
82dB SNR typical.
The LTC2310-14 has an onboard low drift (20ppm/°C max)
2.048V or 4.096V temperature-compensated reference and
provides an external 1.25V buffered reference input. The
LTC2310-14 also has a high speed SPI-compatible serial
interface that supports CMOS or LVDS. The fast 2Msps
throughput with no cycle latency makes the LTC2310-14
ideally suited for a wide variety of high speed applications.
The LTC2310-14 dissipates only 35mW with a 5V supply
and offers nap and sleep modes to reduce the power
consumption for further power savings during inactive
periods.
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
DIFFERENTIAL INPUTS
NO CONFIGURATION REQUIRED
IN+, IN
ARBITRARY
VDD
DIFFERENTIAL
VDD
25Ω
0V 0V
BIPOLAR
VDD
UNIPOLAR
VDD
25Ω
0V 0V
3.3V OR 5V
1µF
47pF
AIN+ VDD REFOUT
LTC2310-14
REFIN
AIN–
CMOS/LVDS
GND
SDO
SCK
CNV
OVDD
10µF
10µF
LVDS OR CMOS
CONFIGURABLE
I/O
1.8V TO 2.5V
1µF
231014 TA01a
32k Point FFT fSMPL = 2Msps, fIN = 500kHz
0
SNR = 82dB
–20
THD = –93dB
SINAD = 81.7dB
SFDR = 97dB
–40
–60
–80
–100
–120
–140
0
0.2 0.4 0.6 0.8 1.0
FREQUENCY (MHz)
231014 TA01b
231014f
For more information www.linear.com/LTC2310-14
1

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LTC2310-14 pdf, ピン配列
LTC2310-14
C onverter 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 14
Bits
No Missing Codes
l 14
Bits
Transition Noise
INL Integral Linearity Error
(Note 6)
l –2.5
0.5
±0.8
LSBRMS
2.5 LSB
DNL Differential Linearity Error
l –0.99 ±0.25 0.99
LSB
BZE Bipolar Zero-Scale Error
(Note 7)
l –5
0
5
LSB
Bipolar Zero-Scale Error Drift
0.01 LSB/°C
FSE Bipolar Full-Scale Error
Bipolar Full-Scale Error Drift
VREFOUT = 4.096V (REFIN Grounded) (Note 7)
VREFOUT = 4.096V (REFIN Grounded)
l –10
±3
15
10 LSB
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
ffIINN
=
=
500kHz,
500kHz,
VVRREEFFOOUUTT
=
=
4.096V, Internal Reference
5V, External Reference
Signal-to-Noise Ratio
ffIINN
=
=
500kHz,
500kHz,
VVRREEFFOOUUTT
=
=
4.096V, Internal Reference
5V, External Reference
Total Harmonic Distortion
ffIINN
=
=
500kHz,
500kHz,
VVRREEFFOOUUTT
=
=
4.096V, Internal Reference
5V, External Reference
Spurious Free Dynamic Range
fIN = 500kHz, VREFOUT = 4.096V, Internal Reference
fIN = 500kHz, VREFOUT = 5V, External Reference
–3dB Input Bandwidth
l 75.5
81.7
82
l 76
82
82.6
l –93 –78
–90
l 78
97
95
100
dB
dB
dB
dB
dB
dB
dB
dB
MHz
Aperture Delay
500 ps
Aperture Jitter
Transient Response
Full-Scale Step
1 psRMS
3 ns
I nternal Reference 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
VREFOUT
REFOUT Output Voltage
REFOUT Input Voltage
REFOUT Temperature Coefficient
4.75V
3.13V
<
<
VVDDDD
<
<
5.25V
3.47V
l 4.082
l 2.042
4.75V
3.13V
<
<
VVDDDD
<
<
5.25V,
3.47V,
REFIN
REFIN
=
=
0V
0V
(Note
(Note
5)
5)
l
l
0.5
0.5
(Note 14)
l
4.096
2.048
3
4.110
2.054
VVDDDD
20
V
V
V
V
ppm/°C
REFOUT Short-Circuit Current
REFOUT Line Regulation
REFOUT Load Regulation
REFOUT Input Resistance (External Reference
Mode)
VDD = 5.25V, Forcing Output to GND
VDD = 4.75V to 5.25V
IREFOUT < 2mA
REFIN = 0V
l
30 mA
0.3 mV/V
0.5 mV/mA
60 kΩ
IREFOUT
REFOUT Input Current (External Reference
Mode)
REFIN = 0V, REFOUT = 4.096V
(Notes 9, 10)
350 µA
For more information www.linear.com/LTC2310-14
231014f
3


3Pages


LTC2310-14 電子部品, 半導体
LTC2310-14
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 4).
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
tDSCKSDOV
tHSDO
tDCNVSDOV
tDCNVSDOZ
tWAKE
SDO Data Valid Delay from SCK
SDO Data Remains Valid Delay from
SCK
Bus Acquisition Time from CNV
Bus Relinquish Time After CNV
REFOUT Wake-Up Time
CL = 5pF (Note 11)
CL = 5pF (Note 11)
CL = 5pF (Note 11)
(Note 11)
CREFOUT = 10μF
l
l2
l
l
4 7.4
2.5 5
5
10
ns
ns
ns
ns
ms
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to ground.
Note 3: When these pin voltages are taken below ground, or above VDD
or OVDD, they will be clamped by internal diodes. This product can handle
input currents up to 100mA below ground, or above VDD or OVDD, without
latch-up.
Note 4: VDD = 5V, OVDD = 2.5V, REFOUT = 4.096V, fSMPL = 2MHz.
Note 5: Recommended operating conditions.
Note 6: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 7: Bipolar zero error is the offset voltage measured from –0.5LSB
when the output code flickers between 0000 0000 0000 000 and 1111
1111 1111 111. Full-scale bipolar error is the worst-case of –FS or +FS
untrimmed deviation from ideal first and last code transitions and includes
the effect of offset error.
Note 8: All specifications in dB are referred to a full-scale ±4.096V input
with REFOUT = 4.096V.
Note 9: When REFOUT is overdriven, the internal reference buffer must be
turned off by setting REFIN = 0V.
Note 10: fSMPL = 2MHz, IREFOUT varies proportionally with sample rate.
Note 11: Guaranteed by design, not subject to test.
Note 12: Parameter tested and guaranteed at OVDD = 1.71V and
OVDD = 2.5V.
Note 13: tSCK of 15.6ns minimum allows a shift clock frequency up to
64MHz for falling edge capture.
Note 14: Temperature coefficient is calculated by dividing the maximum
change in output voltage by the specified temperature range.
Note 15: CNV is driven from a low jitter digital source, typically at OVDD
logic levels. This input pin has a TTL style input that will draw a small
amount of current.
0.8 • OVDD
tDELAY
0.8 • OVDD
0.2 • OVDD
0.2 • OVDD
tDELAY
0.8 • OVDD
0.2 • OVDD
50%
tWIDTH
Figure 1. Voltage Levels for Timing Specifications
50%
231014 F01
231014f
6 For more information www.linear.com/LTC2310-14

6 Page



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部品番号部品説明メーカ
LTC2310-14

2Msps Differential Input ADC

Linear Technology
Linear Technology


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