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MAX4145 Datasheet(PDF) 10 Page - Maxim Integrated Products |
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MAX4145 Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 16 page High-Speed, Low-Distortion, Differential Line Receivers 10 ______________________________________________________________________________________ Pin Description ________________Detailed Description The MAX4144/MAX4145/MAX4146 are low-distortion, differential line receivers that feature high bandwidths and excellent common-mode rejection, making them ideal for balanced, high-speed data transmission sys- tems. The MAX4144 has a preset gain of +2V/V and achieves a 130MHz -3dB bandwidth, a 1000V/µs slew rate, and common-mode rejection (CMR) of 70dB at 10MHz. The MAX4145 and MAX4146 use a single external resistor to set the closed-loop gain from +1V/V to +10V/V for the MAX4145, or greater than +10V/V for the MAX4146. The MAX4145 achieves a -3dB bandwidth of 180MHz, a slew rate of 600V/µs, and CMR of 75dB at 10MHz when operating in the unity-gain configuration. The MAX4146 attains a -3dB bandwidth of 70MHz, a slew rate of 800V/µs, and CMR of 90dB at 10MHz when operating with a closed-loop gain of +10V/V. Differential inputs make the MAX4144/MAX4145/ MAX4146 ideal for applications with high common- mode noise, such as receiving T1 or xDSL transmis- sions over a twisted-pair cable. Excellent differential gain and phase, along with low noise, also suit them to video applications and RF signal processing. For a complete differential transmission link, use the MAX4144/MAX4145/MAX4146 amplifiers with the MAX4147 line driver, as shown in the Typical Applica- tion Circuit. ___________Applications Information Grounding, Bypassing, and PC Board Layout Adhere to the following high-frequency design tech- niques when designing the PC board for the MAX4144/MAX4145/MAX4146. • The printed circuit board should have at least two layers: the signal layer and the ground plane. • Do not use wire-wrap boards—they are too inductive. FUNCTION NAME 9 11 13 4 5 6 8, 14 3 10, 12 2 1, 7 PIN Output Reference. Connect to ground for normal operation. REF 9 Output OUT 11 Output Sense. Connect to OUT close to the pin for normal operation. SENSE 13 Logic Input for Shutdown Circuitry. A logic low enables the amplifier. A logic high disables the amplifier. SHDN 4 Noninverting Input for Gain-Set Resistor RG+ — Noninverting Input IN+ 6 Positive Power Supply VCC 8, 14 Inverting Input for Gain-Set Resistor RG- — No Connect. Not internally connected. N.C. 3, 5, 10, 12 Inverting Input IN- 2 Negative Power Supply VEE 1, 7 9 11 13 4 5 6 8, 14 3 10, 12 2 1, 7 MAX4146 MAX4144 MAX4145 14 SO 14 SO 14 SO 16 QSOP 16 QSOP 16 QSOP 1, 7 2 3, 5, 8, 9, 12,14 1, 7 2 8, 9, 12, 14 1, 7 2 8, 9, 12, 14 3 3 — 4 4 4 — 5 5 6 6 6 10, 16 10, 16 10, 16 11 11 11 13 13 13 15 15 15 |
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