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参数资料
| 型号： | DC1369A-A |
| 厂商： | Linear Technology |
| 文件页数： | 13/34页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO 125MSPS LTC2261-14 |
| 软件下载： | QuikEval II System |
| 设计资源： | DC1369A Design Files |
| 标准包装： | 1 |
| 系列： | * |
| 相关产品： | DC890B-ND - BOARD USB DATA COLLECTION |
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LTC2261-14
LTC2260-14/LTC2259-14
20
226114fc
For more information www.linear.com/LTC2261-14
applicaTions inForMaTion
25
200
0.1F
AIN+
AIN–
12pF
0.1F
VCM
LTC2261-14
226114 F07
–
+
ANALOG
INPUT
HIGH SPEED
DIFFERENTIAL
AMPLIFIER
0.1F
Figure 7. Front-End Circuit Using a High
Speed Differential Amplifier
Reference
The LTC2261-14/LTC2260-14/LTC2259-14 have an inter-
nal 1.25V voltage reference. For a 2V input range using
the internal reference, connect SENSE to VDD. For a 1V
input range using the internal reference, connect SENSE
to ground. For a 2V input range with an external reference,
apply a 1.25V reference voltage to SENSE (Figure 9.)
The input range can be adjusted by applying a voltage to
SENSE that is between 0.625V and 1.30V. The input range
will then be 1.6 VSENSE.
VREF
REFH
SENSE
TIE TO VDD FOR 2V RANGE;
TIE TO GND FOR 1V RANGE;
RANGE = 1.6 VSENSE FOR
0.65V < VSENSE < 1.300V
1.25V
REFL
0.1F
2.2F
INTERNAL ADC
HIGH REFERENCE
BUFFER
226114 F08
LTC2261-14
5
0.8x
DIFF AMP
INTERNAL ADC
LOW REFERENCE
1.25V BANDGAP
REFERENCE
0.625V
RANGE
DETECT
AND
CONTROL
1F
0.1F
Figure 8. Reference Circuit
SENSE
1.25V
EXTERNAL
REFERENCE
1F
VREF
226114 F09
LTC2261-14
Figure 9. Using an External 1.25V Reference
The VREF, REFH and REFL pins should be bypassed as
shown in Figure 8. The 0.1F capacitor between REFH
and REFL should be as close to the pins as possible (not
on the back side of the circuit board).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1369A-B | 功能描述:BOARD DEMO 105MSPS LTC2260-14 RoHS:是 类别:未定义的类别 >> 其它 系列:* 标准包装:1 系列:* 其它名称:MS305720A |
| DC1369A-C | 功能描述:BOARD DEMO 80MSPS LTC2259-14 RoHS:是 类别:未定义的类别 >> 其它 系列:* 标准包装:1 系列:* 其它名称:MS305720A |
| DC1369A-D | 制造商:Linear Technology 功能描述:14BIT ADC Eval Brd, Rq. DC1371 & DC1075 制造商:Linear Technology 功能描述:14BIT ADC Eval Brd, Rq. DC1371 & DC1075; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC2258-14; Kit Application Type:Data Converter; Application Sub Type:ADC; Kit Contents:Board, Guide |
| DC1369A-E | 制造商:Linear Technology 功能描述:14BIT ADC Eval Brd, Rq. DC1371 & DC1075 制造商:Linear Technology 功能描述:14BIT ADC Eval Brd, Rq. DC1371 & DC1075; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC2257-14; Kit Application Type:Data Converter; Application Sub Type:ADC; Kit Contents:Board, Guide |
| DC1369A-F | 制造商:Linear Technology 功能描述:14BIT ADC Eval Brd, Rq. DC1371 & DC1075 制造商:Linear Technology 功能描述:14BIT ADC Eval Brd, Rq. DC1371 & DC1075; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC2256-14; Kit Application Type:Data Converter; Application Sub Type:ADC; Kit Contents:Board, Guide |
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