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参数资料
| 型号： | LTC6421IUDC-20#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/16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
10
642120fb
voltage with a 0.1μF bypass capacitor. When interfacing
with A/D converters such as the LTC22xx families, the
VOCM pin can be connected to the VCM pin of the ADC.
Driving A/D Converters
The LTC6421-20 has been specically designed to interface
directly with high speed A/D converters. The back page of
this data sheet shows the LTC6421-20 driving an LTC2285,
which is a dual 14-bit, 125Msps ADC.
The VOCM pins of the LTC6421-20 are connected to the
VCM pins of the LTC2285, which provide a DC voltage
level of 1.5V. Both ICs are powered from the same 3V
supply voltage.
The inputs to the LTC6421-20 can be congured in various
ways, as described in the Input Impedance and Matching
section of this data sheet. The outputs of the LTC6421-20
may be connected directly to the analog inputs of an ADC,
or a simple lowpass or bandpass lter network may be
inserted to reduce out-of-band noise.
Test Circuits
Due to the fully-differential design of the LTC6421 and
its usefulness in applications with differing characteristic
specications, two test circuits are used to generate the
information in this data sheet. Test Circuit A is DC1299, a
two-port demonstration circuit for the LTC6420/LTC6421
family. The schematic and silkscreen are shown in Fig-
ure 4. This circuit includes input and output transformers
(baluns) for single-ended-to-differential conversion and
impedance transformation, allowing direct hook-up to a
2-port network analyzer. There are also series resistors
at the output to avoid loading the amplier directly with a
50Ω load. Due to the input and output transformers, the
–3dB bandwidth is reduced from 1.3GHz to approximately
1.1GHz.
Test Circuit B uses a 4-port network analyzer to measure
S-parameters and gain/phase response. This removes the
effects of the wideband baluns and associated circuitry,
for a true picture of the >1GHz S-parameters and AC
characteristics.
APPLICATIONS INFORMATION
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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 |
| LTC6430AIUF-15#PBF | 制造商:Linear Technology 功能描述:IC AMPLIFIER DRIVER 24-QFN 制造商:Linear Technology 功能描述:RF AMP 5.2DB 20MHZ-2GHZ 5V 制造商:Linear Technology 功能描述:RF AMP, 5.2DB, 20MHZ-2GHZ, 5V, QFN-24 制造商:Linear Technology 功能描述:RF AMP, 5.2DB, 20MHZ-2GHZ, 5V, QFN-24; Frequency Min:20MHz; Frequency Max:2GHz; Gain:15.2dB; Noise Figure Typ:3dB; RF IC Case Style:QFN; No. of Pins:24; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; Package / Case:24-QFN ;RoHS Compliant: Yes |
| LTC6430AIUF-15#TRPBF | 制造商:Linear Technology 功能描述:IC AMPLIFIER GAIN BLOCK 24QFN 制造商:Linear Technology 功能描述:RF/IF AMPLIFIER, 15.2DB, 50MHZ-1GHZ, 5.25V, QFN-24; Frequency Min:50MHz; Frequency Max:1GHz; Gain:15.2dB; Noise Figure Typ:3dB; RF IC Case Style:QFN; No. of Pins:24; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; RF Type:CATV ;RoHS Compliant: Yes |
| LTC6430BIUF-15#PBF | 制造商:Linear Technology 功能描述:IC AMPLIFIER DRIVER 24-QFN 制造商:Linear Technology 功能描述:RF AMP 5.2DB 20MHZ-2GHZ 5V 制造商:Linear Technology 功能描述:RF AMP, 5.2DB, 20MHZ-2GHZ, 5V, QFN-24; Frequency Min:20MHz; Frequency Max:2GHz; Gain:15.2dB; Noise Figure Typ:3dB; RF IC Case Style:QFN; No. of Pins:24; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; Package / Case:24-QFN ;RoHS Compliant: Yes |
| LTC6430BIUF-15#TRPBF | 制造商:Linear Technology 功能描述:IC AMPLIFIER GAIN BLOCK 24QFN 制造商:Linear Technology 功能描述:RF/IF AMPLIFIER, 15.2DB, 50MHZ-1GHZ, 5.25V, QFN-24; Frequency Min:50MHz; Frequency Max:1GHz; Gain:15.2dB; Noise Figure Typ:3dB; RF IC Case Style:QFN; No. of Pins:24; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; RF Type:CATV ;RoHS Compliant: Yes |
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