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参数资料
| 型号： | DC1186A |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC2308 |
| 软件下载： | QuikEval System |
| 设计资源： | DC1186A Design File DC1186A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 500k |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 已用 IC / 零件： | LTC2308 |
| 已供物品： | 板 |
| 相关产品： | LTC2308IUF#TRPBF-ND - IC ADC 12BIT 500KSPS 24-QFN LTC2308CUF#TRPBF-ND - IC ADC 12BIT 500KSPS 24-QFN LTC2308IUF#PBF-ND - IC ADC 12BIT 8CH 500KSPS 24-QFN LTC2308CUF#PBF-ND - IC ADC 12BIT 8CH 500KSPS 24-QFN |
LTC2308
1
2308fb
FREQUENCY (kHz)
0
–140
MAGNITUDE
(dB)
–120
–100
–80
0
–40
100
150
250
–20
–60
–130
–110
–90
–10
–50
–30
–70
50
200
2308 TA01b
fSMPL = 500kHz
SINAD = 73.6dB
THD = –89.5dB
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Low Noise, 500ksps,
8-Channel, 12-Bit ADC
The LTC
2308 is a low noise, 500ksps, 8-channel, 12-bit
ADC with an SPI/MICROWIRE compatible serial interface.
This ADC includes an internal reference and a fully differ-
ential sample-and-hold circuit to reduce common mode
noise. The internal conversion clock allows the external
serial output data clock (SCK) to operate at any frequency
up to 40MHz.
The LTC2308 operates from a single 5V supply and draws
just 3.5mA at a sample rate of 500ksps. The auto-shutdown
feature reduces the supply current to 200μA at a sample
rate of 1ksps.
The LTC2308 is packaged in a small 24-pin 4mm × 4mm
QFN. The internal 2.5V reference and 8-channel multiplexer
further reduce PCB board space requirements.
The low power consumption and small size make the
LTC2308 ideal for battery operated and portable appli-
cations, while the 4-wire SPI compatible serial interface
makes this ADC a good match for isolated or remote data
acquisition systems.
8192 Point FFT, fIN = 1kHz
n 12-Bit Resolution
n 500ksps Sampling Rate
n Low Noise: SINAD = 73.3dB
n Guaranteed No Missing Codes
n Single 5V Supply
n Auto-Shutdown Scales Supply Current with Sample
Rate
n Low Power: 17.5mW at 500ksps
0.9mW Nap Mode
35μW Sleep Mode
n Internal Reference
n Internal 8-Channel Multiplexer
n Internal Conversion Clock
n SPI/MICROWIRETM Compatible Serial Interface
n Unipolar or Bipolar Input Ranges (Software Selectable)
n Separate Output Supply OVDD (2.7V to 5.25V)
n 24-Pin 4mm × 4mm QFN Package
n High Speed Data Acquisition
n Industrial Process Control
n Motor Control
n Accelerometer Measurements
n Battery Operated Instruments
n Isolated and/or Remote Data Acquisition
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
SDI
SDO
SCK
CONVST
2308 TA01
SERIAL
PORT
ANALOG
INPUT
MUX
CH0-CH7
ANALOG INPUTS
0V TO 4.096V UNIPOLAR
±2.048V BIPOLAR
REFCOMP
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTER
INTERNAL
2.5V REF
LTC2308
AVDD
DVDD
OVDD
GND
0.1μF
2.7V TO 5.25 V
5V
12-BIT
500ksps
ADC
+
–
2.2μF
0.1μF
10μF
0.1μF
VREF
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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