MIC1700BWME

MIC1700 MICREL | Alldatasheet

Document overview

• PDF pages: 10

Technical content

Features

• S-video (Y/C) input, S-video and summed (CV) output
• 2 YPRPB or RGB inputs, YPRPB or RGB output
• YPRPB/RGB 2-1 input multiplexer
• DC coupled inputs – AC-coupled output drive
• 6db output gain for 75Ω source termination
• Component filters selectable for SD or HD cutoffs
• 6th order Butterworth characteristic
• Flat passband (HD 0.5dB @ 30MHz typ)
• Low group delay distortion (HD: 12ns @ 30MHz typ)
• Single 5V supply
• 28-pin wide body SOIC package (with exposed pad for improved thermal performance)

Applications

• HDTV
• HDTV set-top boxes
• Video games
• HDTV systems
• DVD players
• Digital satellite set-top boxes
• HDTV monitors

Ordering Information

Junction Temp. Range Package MIC1700BWME 0°C to +70°C SOIC-28 Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

28 VCC

28-Pin Wide Body SOIC (WM) Pin Description Pin Number Pin Name Pin Function HSEL Digital (Input): selects for the HD or SD filtering. A high selects HD filters. Y1A Y (Input): component channel 1, selected when the MUX is high. 0V to 1V range. Y1B Y (Input): component channel 2, selected when the MUX is low. 0V to 1V range. PR1 PR (Input): component channel 1, selected when the MUX is high. 0V to 1V range. PR2 PR (Input): component channel 2, selected when the MUX is low. 0V to 1V range. 6, 11, 17, 19, 23 GND Ground. PB1 PB (Input): component channel 1, selected when the MUX is high. 0V to 1V range. PB2 PB (Input): component channel 2, selected when the MUX is low. 0V to 1V range. YIN Legacy (S-video): luminance input, 0V to 1V. CIN Legacy (S-video): chroma input, 0V to 1V. MUX Digital MUX control to select input 1 or 2 of the component channel. A high selects input 1. 13, 14, 15, 16 NC No connect. Do not connect these pins. 18, 27, 28 VCC Positive side of the 5V power supply. CVOUT Legacy composite video output, typically 1V to 3V. COUT Legacy chroma output, typically 1V to 3V. YOUT Legacy luminance video output, typically 1V to 3V. PBOUT PB color component output, either SD or HD, typically 1V to 3V. PROUT PR color component output, either SD or HD, typically 1V to 3V. Y1OUT Luminance component output, either SD or HD, typically 1V to 3V.

H L H HDTV Mode HDTV Mode HSEL Y1A, PB1, PR1 Inputs Y1B, PB2, PR2 Inputs L SD Mode SD Mode Y1A, PB1, PR1 Inputs Y1B, PB2, PR2 Inputs

Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) Package Thermal Resistance Electrical Characteristics (Note 5) Symbol Parameter Conditions Min Typ Max Units PD Power Dissipation No load 725 900 mW VO Linear Output Range RL = 150Ω, AC-Coupled 2.0 2.2 V ZIN Input Impedance, Note 7 VIN = 0V to 1V MΩ IIN Input Bias Current, Note 7 VIN = 0V to 1V µA Crosstalk, Note 7 channel-to-channel, f = 3MHz, NTSC Mode –70 dB Crosstalk, Note 7 channel-to-channel, f = 20MHz, HDTV Mode –64 dB Crosstalk, Note 7 between MUX inputs, f = 3MHz –60 dB PSSR Power Supply Rejection Ratio at 400kHz dB Filter Specifications, HD Operating Mode f–3dB –3dB Bandwidth VAC = 0.5Vp-p, VDC = 0.5V MHz f–1dB –1dB Bandwidth VAC = 0.5Vpk-pk, VDC = 0.5V MHz A74MHz 74MHz Attenuation VAC = 0.5Vpk-pk, VDC = 0.5V dB Av Low Frequency Gain VAC = 0.5Vpk-pk, VDC = 0.5V at 400kHz 5.5 6.3 dB Av Gain Matching VAC = 0.5Vpk-pk, VDC = 0.5V channel-to-channel PK Peaking, Note 7 dB TD Baseband Delay f = 100kHz ns TGD Group Delay distortion f = 3.6MHz ns f = 6.0MHz ns SNR Signal to Noise, Note 7 Note 2 dB DG Differential Gain, Note 7 40IRE modulated ramp DP Differential Phase, Note 7 @ both 3.58MHz and 4.43MHz Filter Specifications, NTSC/PAL Operating Mode f–1dB –1dB Bandwidth VAC = 0.5Vpk-pk, VDC = 0.5V 7.9 MHz f–3dB –3dB Bandwidth VAC = 0.5Vpk-pk, VDC = 0.5V 7.6 8.7 MHz A27MHz 27MHz Attenuation VAC = 0.5Vpk-pk, VDC = 0.5V dB Av Low Frequency Gain VAC = 0.5Vpk-pk, VDC = 0.5V at 400kHz 5.5 6.3 dB Av Gain Matching channel-to-channel GD Group Delay, Note 7 f = 3.6MHz ns SNR Signal to Noise, Note 7 Note 8 dB Digital I/O VIH Input High HSTL and MUX pin 2.0 V VIL Input Low HSTL and MUX pin 0.5 V

Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Note 4. With SOIC attached by leads only. Note 5. Specification for packaged product only. Note 6. When thermally enhanced SOIC heatsink pad is soldered to a copper pad on a single layer PCB. Note 7. Guaranteed by design and characterization. Note 8. Low pass filter enabled. VIN = 1Vpk-pk. Wideband noise floor over 20MHz.

GAIN (dB) FREQUENCY (Hz) NTSC Gain 10M 100M Input Signal = 50mVp-p VDC = 0.5V -80 -70 -60 -50 -40 -30 -20 -10 GAIN (dB) FREQUENCY (Hz) NTSC Gain 100k 10M 100M Input Signal = 50mVp-p VDC = 0.5V 100 110 10 12 14 16 GROUP DELAY (ns) FREQUENCY (MHz) NTSC Group Delay GAIN (dB) FREQUENCY (Hz) HDTV Gain 10M 100M -80 -70 -60 -50 -40 -30 -20 -10 GAIN (dB) FREQUENCY (Hz) HDTV Gain 10M 100M Input Signal = 50mVp-p VDC = 0.5V GROUP DELAY (ns) FREQUENCY (MHz) HDTV Group Delay

The MIC1700 is a multi-channel active filtering device with channels for both component and composite video signals. Component channel filters have selectable SD or HD band- widths while composite filters have fixed bandwidth. One of two component inputs may be selected via a 2-to-1 mux. Output drivers are sufficient to drive 1V signals into 75Ω loads via a 75Ω source terminator. Input Inputs are all high impedance with low input bias current. Signal excursions at the inputs are limited to a specified range of 0V to 1V to meet distortion and other performance speci- fications. Two groups of three pins each comprise the two selectable component inputs, intended for YPRPB or RGB applications. One group of two pins comprises the composite S-video input, intended for legacy applications. Component Multiplexer Either of two component inputs may be selected using the component input multiplexer. The output of this high isolation multiplexer feeds the internal component filters. Input charac- teristics are not altered by the action of the multiplexer. Component Filters The component filters are 6th order with near Butterworth response characteristics. Cutoff frequencies are selectable Functional Diagram MUX Select Y1OUT PROUT Component Video Composite Video PBOUT YOUT CVOUT COUT HSEL (HDTV or NTSC/PAL Select) Selectable Filter Selectable Filter Selectable Filter 2:1 MUX 2:1 MUX 2:1 MUX 8MHz Filter CIN YIN PB2 PR2 PR1 Y1B Y1A PB1 8MHz Filter between 8MHz SD (Standard Definition) and 36MHz HD (High Definition). The 6th order Butterworth characteristic provides a maximally flat passband with 39dB of attenuation an octave above cutoff, and low group delay distortion minimizes overshoots in the time domain. Composite Filters The composite filters have the same characteristics as the SD mode of the component filters. These filters are addition- ally specified for DG (differential gain, variation of subcarrier amplitude with luma level) and DP (differential phase, varia- tion of subcarrier phase with luma level). These distortions (which are intermodulation distortions) cannot occur with true S-video inputs applied, since luma and chroma are in sepa- rate channels. However, the composite filters can also be used with full legacy composite signals. In these cases, the DG and DP specifications are applicable. Output Drivers The output drivers are configured to provide low distortion 2V peak-to-peak swing into a 150Ω load from a single +5V supply. To achieve this, the operating range is approximately from 1V to 3V for normal inputs. AC-coupling at the outputs helps keep power dissipation within specification while pre- venting excessive DC components from coupling to down- stream equipment. MIC1700 Block Diagram

Figure 5. Clamp and AC Biasing for S-Video Applications

MICREL, INC.

1849 FORTUNE DRIVE

SAN JOSE, CA 95131 USA TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2003 Micrel, Incorporated.

Package Information

28-Pin Wide Body SOIC (WM)