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参数资料
| 型号： | LTC2224IUK#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 135MSPS SAMPL 48QFN |
| 标准包装： | 2,000 |
| 位数： | 12 |
| 采样率（每秒）： | 135M |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 680mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 供应商设备封装： | 48-QFN-EP（7x7） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个单端，双极; 1 个差分，双极 |
LTC2224
16
2224fa
and REFLB for the low reference. The multiple output pins
are needed to reduce package inductance. Bypass capaci-
tors must be connected as shown in Figure 9.
Other voltage ranges in between the pin selectable ranges
can be programmed with two external resistors as shown
in Figure 10. An external reference can be used by applying
its output directly or through a resistor divider to SENSE.
It is not recommended to drive the SENSE pin with a logic
device. The SENSE pin should be tied to the appropriate
level as close to the converter as possible. If the SENSE pin
is driven externally, it should be bypassed to ground as
close to the device as possible with a 1
F ceramic capacitor.
APPLICATIO S I FOR ATIO
WU
UU
Figure 7. Recommended Front End Circuit for
Input Frequencies Between 250MHz and 500MHz
25
25
0.1
F
AIN
+
AIN
–
2pF
2.2
F
VCM
LTC2224
ANALOG
INPUT
0.1
F
0.1
F
T1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS, INDUCTORS
ARE 0402 PACKAGE SIZE
2224 F08
4.7nH
Figure 6. Recommended Front End Circuit for
Input Frequencies Between 100MHz and 250MHz
25
25
12
12
0.1
F
AIN
+
AIN
–
8pF
2.2
F
VCM
LTC2224
ANALOG
INPUT
0.1
F
0.1
F
T1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
2224 F06
Figure 8. Recommended Front End Circuit for
Input Frequencies Above 500MHz
25
25
0.1
F
AIN
+
AIN
–
2.2
F
VCM
LTC2224
ANALOG
INPUT
0.1
F
0.1
F
T1
T1 = MA/COM ETC1-1-13
RESISTORS, CAPACITORS
ARE 0402 PACKAGE SIZE
2224 F07
VCM
REFHA
REFLB
SENSE
TIE TO VDD FOR 2V RANGE;
TIE TO VCM FOR 1V RANGE;
RANGE = 2 VSENSE FOR
0.5V < VSENSE < 1V
1.6V
REFLA
REFHB
2.2
F
2.2
F
INTERNAL ADC
HIGH REFERENCE
BUFFER
0.1
F
2224 F09
LTC2224
4
DIFF AMP
1
F
1
F
0.1
F
INTERNAL ADC
LOW REFERENCE
1.6V BANDGAP
REFERENCE
1V
0.5V
RANGE
DETECT
AND
CONTROL
Figure 9. Equivalent Reference Circuit
VCM
SENSE
1.6V
0.8V
2.2
F
12k
1
F
12k
2224 F10
LTC2224
Figure 10. 1.6V Range ADC
The difference amplifier generates the high and low refer-
ence for the ADC. High speed switching circuits are
connected to these outputs and they must be externally
bypassed. Each output has four pins: two each of REFHA
and REFHB for the high reference and two each of REFLA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2224UK | 制造商:LINER 制造商全称:Linear Technology 功能描述:12-Bit, 135Msps ADC |
| LTC2225 | 制造商:LINER 制造商全称:Linear Technology 功能描述:14-Bit, 80Msps Low Power 3V ADC |
| LTC2225CUH | 制造商:Linear Technology 功能描述:ADC Single Pipelined 10Msps 12-bit Parallel 32-Pin QFN EP |
| LTC2225CUH#PBF | 功能描述:IC ADC 12-BIT 10MSPS 3V 32-QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC2225CUH#TR | 制造商:Linear Technology 功能描述:ADC Single Pipelined 10Msps 12-bit Parallel 32-Pin QFN EP T/R |
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