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参数资料
| 型号： | LTC6421IUDC-20#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC DRIVER DIFF 20-QFN |
| 标准包装： | 2,500 |
| 类型： | ADC 驱动器 |
| 应用： | 数据采集 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（3x4） |
| 包装： | 带卷 (TR) |
LTC6421-20
1
642120fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Dual Matched
1.3GHz Differential
Ampliers/ADC Drivers
The LTC6421-20 is a dual high speed differential amplier
targeted at processing signals from DC to 140MHz. The
part has been specically designed to drive 12-, 14- and
16-bit ADCs with low noise and low distortion, but can also
be used as a general-purpose broadband gain block.
The LTC6421-20 is easy to use, with minimal support
circuitry required. The output common mode voltage
is set using an external pin, independent of the inputs,
which eliminates the need for transformers or AC-coupling
capacitors in many applications. The gain is internally
xed at 20dB (10V/ V).
The LTC6421-20 saves space and power compared to
alternative solutions using IF gain blocks and transformers.
The LTC6421-20 is packaged in a compact 20-lead
3mm × 4mm QFN package and operates over the – 40°C
to 85°C temperature range.
Distribution of Gain Match
n Matched Gain ±0.1dB
n Matched Phase ±0.2° at 100MHz
n Channel Separation 80dB at 100MHz
n 1.3GHz –3dB Bandwidth; Fixed Gain of 10V/V (20dB)
n IMD3 = –76dBc at 100MHz, 2VP-P
n Equivalent OIP3 = 42dBm at 100MHz
n 1nV/√Hz Internal Op Amp Noise
n 6.2dB Noise Figure
n Differential Inputs and Outputs
n Rail-to-Rail Output Swing
n 40mA Supply Current (120mW) per Amplier
n 1V to 1.6V Output Common Mode Voltage,
Adjustable
n DC- or AC-Coupled Operation
n 20-Lead 3mm × 4mm × 0.75mm QFN Package
n Differential ADC Driver
n Single Ended to Differential Conversion
n IF Sampling (Diversity) Receivers
n Broadband I/Q Ampliers
n Satellite Communications
Matched Dual Ampliers with Output Common Mode Biasing
642120 TA01a
3V
V + A
ENABLEA
LTC6421-20
ZIN = 200Ω
0.1μF
–INA 100Ω
1000Ω
+INA
V –
+OUTA
VOCMA
±0.1dB GAIN MATCHING
±0.1° PHASE MATCHING
AT 100MHz
– OUTA
ZIN = 200Ω
VOCMA
V+ B
3V
ENABLEB
VOCMB
1000pF
0.1μF
VINA
100Ω
12.5Ω
0.1μF
+INB 100Ω
1000Ω
–INB
– OUTB
+OUTB
0.1μF
VINB
100Ω
12.5Ω
0.1μF
1000pF
VOCMB
CHANNEL-TO-CHANNEL GAIN MATCH (dB)
– 0.25
PERCENT
AGE
OF
UNITS
40
35
30
25
20
15
10
5
0
0.15
642120 TA01b
– 0.15
– 0.05
0.05
0.25
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.
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| LTC6430-15 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Linearity Differential RF/IF Amplifier/ADC Driver |
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