ZHCSFB6D April 2016 – June 2021 THS4551
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 描述
- 4 Revision History
- 5 Companion Devices
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics: (VS+) – (VS–) = 5 V
- 7.6 Electrical Characteristics: (VS+) – (VS–) = 3 V
- 7.7 Typical Characteristics: (VS+) – (VS–) = 5 V
- 7.8 Typical Characteristics: (VS+) – (VS–) = 3 V
- 7.9 Typical Characteristics: 3-V to 5-V Supply Range
-
8 Parameter Measurement Information
- 8.1 Example Characterization Circuits
- 8.2 Output Interface Circuit for DC-Coupled Differential Testing
- 8.3 Output Common-Mode Measurements
- 8.4 Differential Amplifier Noise Measurements
- 8.5 Balanced Split-Supply Versus Single-Supply Characterization
- 8.6 Simulated Characterization Curves
- 8.7 Terminology and Application Assumptions
- 9 Detailed Description
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
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10.2.3 ADC3k Driver with a 2nd-Order RLC Interstage Filter Application
The THS4551 is well suited to
low-power, dc-coupled requirements driving low-power pipeline ADCs (such as the
ADC3241 25-MSPS, 14-bit, dual device). Figure 10-17 shows an example design taking a bipolar input to a
–1-dBFS swing at the ADC input of 1.8 VPP. In this case, a 50-Ω source
and input matching is assumed with a gain of 5 V/V to the output pins with a
2nd-order interstage filter adding a –1-dB insertion loss. Full-scale voltage at the
input of RT and RG1 is then ±0.2 V. The 0.95-V output
common-mode voltage is provided by the ADC. The output filter provides a noise-power
bandwidth limit with a low overshoot step response with no common-mode level shift
from the 0.95-V voltage provided by the ADC.
Figure 10-17 ADC3k
Driver with a 2nd-Order RLC Interstage Filter