SM5301

SM5301 NPC | Alldatasheet

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Technical content

NIPPON PRECISION CIRCUITS INC.—1 3-channel Video Buffer with Built-in Wideband Filters OVERVIEW The SM5301AS is a video buffer with built-in video signal bandwidth lowpass filter. The filter employs a 5- order Butterworth lowpass filter configuration. The filter characteristics have been optimized for minimal over- shoot and flat group delay, it has a variable cutoff frequency and guaranteed driver-stage channel gain differ- ence and phase difference values.

FEATURES

I Supply voltage: 5V 10% I VESA-standard ATSC digital TV RGB/YUV video filters I 2-system input/1-system output switching analog multiplexer function I DC voltage level restore sync clamp function I Output buffer gain switching function: 0, 6dB (input-to-output AC signal gain) I Channel-to-channel gain difference: 0.5dB ( supply voltage variation) I Channel-to-channel phase difference: 3.5 degree I Output signal harmonic distortion (all channels): 1.5% I Cutoff frequency: 5.8 to 37MHz variable I Package: 28-pin HSOP (Pb free)

APPLICATIONS

I Set-top boxes I Digital television I DVD players I Projector

ORDERING INFORMATION

(Top view) PACKAGE DIMENSIONS (Unit: mm) Device Package SM5301AS 28-pin HSOP MUXSEL SYNCIN VCC4 RINA/YINA4 GSR1 RINB/YINB NC GINA/UINA GSG1 GINB/UINB NC BINA/VINA VFC RFC GND4 VCC1 R OUT/YOUT GND1 VCC2G OUT/UOUT GND2 VCC3 BOUT/VOUT GND3 GSB1 BINB/VINB DISABLE NC GND GND 1.3TYP 18.6 ± 0.3 7.5 ± 0.2 9.9 ± 0.3 0.8 5.15 0.35 ± 0.05 0.12 M 0.10 0.1 ± 0.05 2.2 ± 0.1 0 to 10

NIPPON PRECISION CIRCUITS INC.—2 BLOCK DIAGRAM VCC4 RINA/YINA GSR1 RINB/YINB VFCGND4 VCC1 ROUT/YOUT GND1 VCC2 GND2 VCC3 GND3 DISABLE MUX DC Restore LPF Buffer GINA/UINA GSG1 GINB/UINB GOUT/UOUTMUX DC Restore LPF Buffer BINA/VINA GSB1 BINB/VINB BOUT/VOUTMUX DC Restore LPF Buffer MUXSEL SYNCIN IFC Control RFC

NIPPON PRECISION CIRCUITS INC.—3 PIN DESCRIPTION Number Name I/O Description INA INA I Analog G INA or U INA signal input. Sync signal is input on SYNCIN pin.

2 GSG1 I G

output buffer gain set input INB INB I Analog G INB or U INB signal input. Sync signal is input on SYNCIN pin.

4 NC – No connection (leave open or connect to ground)

signal input. Sync signal is input on SYNCIN pin.

6 GSB1 I B

output buffer gain set input INB INB I Analog B INB or V INB signal input. Sync signal is input on SYNCIN pin.

8 NC – No connection (leave open or connect to ground)

9 DISABLE I

Power save function. Built-in pull-down resistor. L: Enable H: Disable (Output pins: R OUT OUT , G OUT OUT , and B OUT OUT are high impedance.)

10 GND3

12 VCC3

13 GND2

15 VCC2

16 GND1

18 VCC1

19 GND4

20 RFC

LPF (lowpass filter) cutoff frequency setting resistor connection

21 VFC I LPF (lowpass filter) cutoff frequency setting voltage input

22 MUXSEL I

Input select signal. Built-in pull-down resistor. INA pin select INB pin select 23 SYNCIN I Filter channel external H-Sync signal input. Active “H”. Built-in pull-down resistor.

24 VCC4

signal input. Sync signal is input on SYNCIN pin.

26 GSR1 I R

output buffer gain set input 27 R INB INB I Analog R INB or Y INB signal input. Sync signal is input on SYNCIN pin.

28 NC – No connection (leave open or connect to ground)

NIPPON PRECISION CIRCUITS INC.—4 SPECIFICATIONS Absolute Maximum Ratings Recommended Operating Conditions

Electrical Characteristics

V CC = 4.5 to 5.5V , Ta = – 25 to 85 C unless otherwise noted. Parameter Symbol Rating Unit Supply voltage range V CC 0.3 to 7.0 V Storage temperature range T stg 55 to 125 C Power dissipation 1 1. When mounted on a substrate: mounted on a 111 1.6mm glass-epoxy substrate with 90% copper (Cu) wiring factor, 0m/s air flow, and Ta = – 25 to 70 P 1.0 W Power dissipation 2 2. When mounted on a substrate: mounted on a 111 1.6mm glass-epoxy substrate with 90% copper (Cu) wiring factor, 0m/s air flow, and Ta = 70 to 80 P 0.9 W Parameter Symbol Rating Unit Supply voltage ranges V CC 4.5 to 5.5 V Operating temperature range Ta – 25 to 85 C Parameter Symbol Condition Rating Unit Test levelmin typ max Supply current 1 I CC1 V CC 5.5V, RFC = 820 Ω to GND, VFC 0.2V (fc 5MHz), DISABLE "L" 70 100 130 mA I Supply current 2 I CC2 V CC 5.5V, RFC = 820 Ω to GND, VFC 1.6V (fc 40MHz), DISABLE "L" 90 120 160 mA I Supply current 3 I CC3 V CC 5.5V, RFC = 820 Ω to GND, VFC 0.2V (fc 40MHz), DISABLE "H" 1 2.5 5 mA I Output gain error 1 A Error entered around table 1 values, Ta = 0 to 70 C, V CC 4.75 to 5.25V – 0.5 – 0.5 dB I Output gain error 2 A Error entered around table 1 values, Ta = – 25 to 85 C – 1 – 1d BI Output voltage V out2 RL Ω to GND, 6dB gain setting 2.4 – – Vp-p I DISABLE-mode input impedance (pull-down) R IN1 R INA INA , R INB INB , G INA INA G INB INB , B INA INA , B INB INB –5 0– k Ω I Clamp response time T clamp Time for 90% output signal change for 10mV input signal, C IN 0.1 µ F –8– m s I I Maximum input amplitude V I AC coupling, 6dB gain setting – – 1.4 Vp-p I Maximum overshoot V OS 2Vp-p output pulse – 10 – % II Maximum load capacitance C L BOUT/VOUT, GOUT/UOUT, ROUT/YOUT – – 15 pF II Output drive load RL one load unit = 150Ω – – 2 load I Channel-to-channel gain difference dG Between R/G/B, fc/2 [Hz] – – 0.5 dB I

NIPPON PRECISION CIRCUITS INC.—5 Filter Characteristics VCC = 4.5 to 5.5V , Ta = – 25 to 85°C unless otherwise noted. Test level I : 100% of products tested at Ta = + 25 °C. II : Guaranteed as result of design and characteristics evaluation. Channel-to-channel phase difference dφ Between R/G/B, fc/2 [Hz] – 3.5 – degree II Output harmonic distortion T HD Vout = 2Vp-p, f = 1MHz – 1.5 – % II Power supply rejection ratio PSRR V CC = 0.5Vp-p, f = 100kHz – 35 – dB II Output short-circuit current I SC – – 100 mA II Logic HIGH-level input voltage 1 V IH1 DISABLE, MUXSEL, SYNCIN 2.5 – – V I Logic LOW-level input voltage 1 V IL1 DISABLE, MUXSEL, SYNCIN – – 1.0 V I Logic HIGH-level input voltage 2 V IH2 GSB1, GSG1, GSR1 V CC − 0.5 – – V I Logic LOW-level input voltage 2 V IL2 GSB1, GSG1, GSR1 – – 0.5 V I Logic pull-up resistance R IN2 GSB1, GSG1, GSR1 – 40 – k Ω I Logic pull-down resistance R IN3 DISABLE, MUXSEL, SYNCIN – 50 – k Ω I Parameter Symbol Condition Rating Unit Test levelmin typ max Cutoff frequency adjustment range FC Ta=25°C (see figure 1) 5.8 – 37 MHz I Cutoff frequency error ∆FC Ta = 25°C, VCC = 5.0V – – ± 20 % I 4fc attenuation f SB fIN ≥ 4fc – 50 – dB II Output noise characteristic V NOISE 10kHz to 40MHz, 6dB output gain setting – 1.0 – mV RMS II Crosstalk X TALK Between 2 channels with input 0.5Vp-p 1MHz – − 47 – dB II Multiplexer crosstalk X TALK Between MUX A−B– − 49 – dB II Channel-to-channel group delay T PD Each input = 500kHz – 10 – ns II Group delay variation ∆TPD1 Fc = 6.7MHz (500kHz) to 3.58MHz – 9 – ns II to 4.43MHz – 15 – ns II ∆TPD2 Fc = 24MHz (500kHz) to 3.58MHz – 1 – ns II to 4.43MHz – 1 – ns II to 10MHz – 2 – ns II PD3 Fc = 36MHz (1MHz) to 10MHz – 0.5 – ns II to 30MHz – 5 – ns II VFC input voltage range VFC 0.2 – 1.6 V I Parameter Symbol Condition Rating Unit Test levelmin typ max

Table 1. Output buffer gain control Figure 1. VFC vs. cutoff frequency

NIPPON PRECISION CIRCUITS INC.—8 Adjusting the Cutoff Frequency Constant-voltage control 1 Cutoff frequency control using a reference voltage VR generated by voltage divider formed by R1 and R2. Constant-voltage control 2 Cutoff frequency control by adjusting the resistance connected to RFC. PWM control Cutoff frequency control by smoothing the PWM signal, using R1 and C1, input to VFC. When VFC = 0.2V V DD = 3.3V , 6% duty drive VDD = 5.0V , 4% duty drive When VFC = 1.6V V DD = 3.3V , 48% duty drive VDD = 5.0V , 32% duty drive Note: The resistor connected to RFC can affect the cutoff frequency response, so a high-precision component should be used. It is recommended to set the RC filter cutoff frequency to < fc/100 of the PWM wave- form frequency. VFC VR RFC VFC VR RFC VFC RFC PWM

NIPPON PRECISION CIRCUITS INC.—9 Resistor switch control The VFC voltage can be controlled using multi-logic voltage levels switching inputs to a voltage divider resis- tor network. The VFC voltage is determined by the logic voltage (V1, V2, V3) and the corresponding voltage divider resis- tor network. VFC RFC

NIPPON PRECISION CIRCUITS INC.—10 TYPICAL APPLICATION CIRCUITS ATSC Digital TV Application (*1) Pins without an input signal, set by NUXSEL, should be left open or tied to GND. (*2) Connect 4 × 0.1µF capacitor between the supply pins close to the IC. (*3) Connect a 47µF capacitor between the supply pins close to the IC. (*4) GS×1 are 3-level pins. Connect a capacitor if an error occurs due to external noise. Also, if open-circuit, the internal impedance and external capacitance (C) form an RC network. When power is applied, the open-circuit potential rises with time constant τ = C × 10k (sec). (*5) Printed circuit board supply wiring I If the supply is used for other digital circuits, there is a possibility that noise will be introduced. Accord- ingly, these circuits should be connected to the application’s analog supply. I Ground-plane wiring should be performed, as much as possible, to provide low GND line impedance. I If ground-plane wiring up to the GND pins is difficult, the ground plane should be as close to the IC as possible with a separate wire to each GND pin. Input Capacitor and Cutoff Frequency The capacitor connected to pins R INA/YINA, RINB/YINB, GINA/UINB, GINB/UINB, BINA/VINA, and BINB/VINB forms a highpass filter (HPF) with the internal impedance. The HPF cutoff frequency is given by the following equation. (C: input capacitance, R: signal input impedance = 9.3kΩ) MUXSEL SYNCIN VCC4 RINA/YINA GSR1 RINB/YINB NCGINA/UINA GSG1 GINB/UINB NC BINA/VINA VFC RFC GND4 VCC1 ROUT/YOUT GND1 VCC2GOUT/UOUT GND2 VCC3 BOUT/VOUT GND3 GSB1 BINB/VINB DISABLE NC 820ΩCut-off control voltage +5V (*2) (*3) BIN/VIN 1.0µF GIN/UIN 1.0µF (*1) (*4)GSB1 DISABLE (*1) (*2) 220µF B/V+ 75Ω 220µF R/Y+ 75Ω (*4)GSG1 (*4)GSR1 RIN/YIN 1.0µF SYNC (*1) (*2)(*2) 220µF G/U+ 75Ω fc = 1 2πCR

NIPPON PRECISION CIRCUITS INC.—11 2-load Output Connection ROUT/YOUT output 2-load connection (similarly for GOUT/UOUT , BOUT/VOUT outputs) Digital TV Receiver and HDTV Decoder Box ROUT/YOUT 220µF R/Y1+ 75Ω R/Y2 75Ω MPEG2 Transport/Decoder HDTV Decoder/Display Processor Graphic Processor D to A Convertor SM5301 DIGITAL TV Video Decoder and Display Processor D to A Convertor SM5301 RGB MONITOR Graphic Processor CAMERA DVD-ROM MEMORY

NIPPON PRECISION CIRCUITS INC.—12 NC0202BE 2003.05 Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from NIPPON PRECISION CIRCUITS INC. (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are req uested appropriately take steps to obtain required permissions or approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. 4-3, Fukuzumi 2-chome, Koto-ku, Tokyo 135-8430, Japan Telephone: +81-3-3642-6661 Facsimile: +81-3-3642-6698 http://www.npc.co.jp/ Email: sales @npc.co.jp