• Three Terminal Adjustable or Fixed Voltages
  1.5V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V
• Output Current of 1A
• Operates Down to 1V Dropout
• Line Regulation: 0.2% Max.
• Load Regulation: 0.4% Max.
• SOT-223, TO-252 and SO-8 package available

APPLICATIONS

• High Efficiency Linear Regulators
• Post Regulators for Switching Supplies
• 5V to 3.3V Linear Regulator
• Battery Chargers
• Active SCSI Terminators
• Power Management for Notebook
• Battery Powered Instrumentation

Stability

The circuit design used in the AMS1117 series requires the use of an output capacitor as part of the device frequency compensation. The addition of 22µF solid tantalum on the output will ensure stability for all operating conditions. When the adjustment terminal is bypassed with a capacitor to improve the ripple rejection, the requirement for an output capacitor increases. The value of 22µF tantalum covers all cases of bypassing the adjustment terminal. Without bypassing the adjustment terminal smaller capacitors can be used with equally good results. To further improve stability and transient response of these devices larger values of output capacitor can be used.

Protection Diodes

Unlike older regulators, the AMS1117 family does not need any protection diodes between the adjustment pin and the output and from the output to the input to prevent over-stressing the die. Internal resistors are limiting the internal current paths on the AMS1117 adjustment pin, therefore even with capacitors on the adjustment pin no protection diode is needed to ensure device safety under short-circuit conditions.

• DVB-T/T2
• ISDB-T
• ATSC
• DTMB
• DVB-C
• J.83 Annex A/B/C

The MxL608 converts a single-ended 75 Ω RF input signal to an IF output frequency that is software programmable between 4MHz and 44MHz. All channel selection filters are fully integrated and software configurable for 6MHz, 7MHz, or 8MHz channel bandwidths. The MxL608 includes an accurate input power detector and channel scan algorithm that offers significant improvement in channel scan time, especially under blind-scan conditions. Channel filtering, Low Noise Amplifier (LNA), and loop-through output are completely integrated. The external Bill Of Materials (BOM) is limited to a small number of standard value discrete components.

Features:

• Pin-compatible with the MxL603
• Optional no balun (single-ended input) configuration
• 52.5MHz to 866MHz tuning range
• Programmable channel selection filter (6MHz/ 7MHz/8MHz)
• Programmable low/high IF interface
• Programmable IF Automatic Gain Control (AGC) interface
• Self AGC calibration
• Programmable IF spectrum inversion
• Highly accurate input power level reporting
• Reference clock output
• I2C-compatible control interface
• Integrated loop-through output
• API-based software interface
• 4x4mm2 QFN24 package

Applications :

• Digital terrestrial and cable STBs
• Integrated Digital Televisions (iDTVs)
• Tuner modules
• Portable TVs and media players
• Blu-Ray recorders
• Multi-tuner Personal Video Recorder (PVRs)

Benefits :

• Single hardware design for all global digital terrestrial applications
• Ultra low power, 350mW (Active), or 110mW (Standby)
• Simple two-layer PCB design
• No external Surface Acoustic Wave (SAW) filters
• Low BOM cost

• Worldwide digital TV tuner
  DVBT/T2/C, ISDBT/C, DTMB, ATSC,J.83B
• Compliant with worldwide specifications
  NorDig, DBOOK, CBOOK, ARIB, EN55020, OpenCableTM
• All system channel support
  42MHz to 1002MHz
• Lowest BOM cost
  No required SAW, external LNA and RF balun
• Low power consumption
  200mA when supply by Vcc=3.3V
• Crystal oscillator output buffer for single crystal application
• Best in class adjacent channel immunity in real world to overcome all rigorous field environments.
• Standard I2C control interface