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LTBGP

更新时间: 2024-11-24 11:42:23
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
20页 412K
描述
Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown

LTBGP 数据手册

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LTC1403-1/LTC1403A-1  
Serial 12-Bit/14-Bit, 2.8Msps  
Sampling ADCs with Shutdown  
U
FEATURES  
DESCRIPTIO  
The LTC®1403-1/LTC1403A-1 are 12-bit/14-bit, 2.8Msps  
serial ADCs with differential inputs. The devices draw only  
4.7mA from a single 3V supply and come in a tiny 10-lead  
MSE package. A Sleep shutdown feature lowers power  
consumption to 10µW. The combination of speed, low  
powerandtinypackagemakestheLTC1403-1/LTC1403A-1  
suitable for high speed, portable applications.  
2.8Msps Conversion Rate  
Low Power Dissipation: 14mW  
3V Single Supply Operation  
2.5V Internal Bandgap Reference can be Overdriven  
3-Wire Serial Interface  
Sleep (10µW) Shutdown Mode  
Nap (3mW) Shutdown Mode  
80dB Common Mode Rejection  
The 80dB common mode rejection allows users to elimi-  
nategroundloopsandcommonmodenoisebymeasuring  
signals differentially from the source.  
±1.25V Bipolar Input Range  
Tiny 10-Lead MSE Package  
U
The devices convert –1.25V to 1.25V bipolar inputs differ-  
entially. The absolute voltage swing for +AIN and  
–AIN extends from ground to the supply voltage.  
APPLICATIO S  
Communications  
The serial interface sends out the conversion results  
during the 16 clock cycles following CONVfor compat-  
ibility with standard serial interfaces. If two additional  
clock cycles for acquisition time are allowed after the data  
stream in between conversions, the full sampling rate of  
2.8Msps can be achieved with a 50.4MHz clock.  
Data Acquisition Systems  
Uninterrupted Power Supplies  
Multiphase Motor Control  
Multiplexed Data Acquisition  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
W
BLOCK DIAGRA  
THD, 2nd and 3rd vs Input  
10µF 3V  
Frequency for Differential Input  
Signals  
7
–44  
V
DD  
LTC1403A-1  
–50  
–56  
+
THREE-  
STATE  
SERIAL  
OUTPUT  
PORT  
A
A
IN  
1
2
+
–62  
14-BIT ADC  
SDO  
S & H  
8
–68  
–74  
IN  
14  
THD 3rd  
2nd  
–80  
–86  
V
REF  
3
4
10  
9
CONV  
SCK  
2.5V  
REFERENCE  
TIMING  
LOGIC  
10µF  
–92  
GND  
5
–98  
–104  
14031 BD  
6
11  
0.1  
1
10  
100  
EXPOSED PAD  
FREQUENCY (MHz)  
14031 G19  
14031f  
1

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