Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsDev KitsPCB design board

THS7375

75 W

Y'/G'Out

CVBS/Sync

CVBS

+1.8V

Y'/G'

P’ /B'

P’ /R'

CH1OUT

CH2OUT

CH3OUT

CH4OUT

S+

BYPASS

CH1IN

CH2IN

CH3IN

CH4IN

GND

DISABLE

THS7375

ToGPIOController

orGND

75 W

P' /B'Out

75 W

P' /R'Out

75 W

+3Vto+5V

DaVinci

DMxxxx

THS7375

www.ti.com

SBOS449A –SEPTEMBER 2008–REVISED JANUARY 2011

4-Channel SDTV Video Amplifier with 6th-Order Filters and 5.6-V/V Gain

Check for Samples: THS7375

FEATURES

DESCRIPTION

• Four SDTV Video Amplifiers for CVBS,

Fabricated using the revolutionary complementary

S-Video, Y'P'

480i/576i, Y'U'V', G'B'R'

Silicon-Germanium (SiGe) BiCom3X process, the

(R'G'B'), or SCART

THS7375 is a low-power, single-supply, 3 V to 5 V

four-channel integrated video buffer. It incorporates a

• Integrated Low-Pass Filters:

sixth-order Butterworth filter (able to be bypassed)

– Sixth-Order 9.5-MHz (–3dB) Butterworth

that is useful as a digital-to-analog converter (DAC)

– –0.1-dB Bandwidth at 6 MHz

reconstruction filter or an analog-to-digital converter

(ADC) anti-aliasing filter. The 9.5-MHz filter is a

– –1-dB Passband Bandwidth at 8 MHz

perfect choice for SDTV video that includes

– 54-dB Attenuation at 27 MHz

composite (CVBS), S-video, Y'U'V', G'B'R' (R'G'B'),

• Versatile Input Biasing

Y'P'

480i/576i, and SCART systems.

– DC-Coupled with 320-mV Output Shift

As part of the THS7375 flexibility, the input can be

– AC-Coupled with Sync-Tip Clamp

configured for either ac or dc-coupled inputs. The

320-mV output level shift allows for a full sync

– AC-Coupled with Biasing Allowed

dynamic range at the output with 0-V input. The

• Built-in 5.6-V/V Gain (14.95 dB)

ac-coupled modes include a transparent sync-tip

• +3-V to +5-V Single-Supply Operation

clamp option for CVBS, Y', and G'B'R' signals with

sync. AC-coupled biasing for C'/P'

/P'

channels can

• Rail-to-Rail Output:

easily be achieved by adding an external resistor to

– Output Swings Within 100 mV from the

S+

Rails to Allow AC or DC Output Coupling

The THS7375 is the perfect choice for all video buffer

– Supports Driving Two Lines per Channel

applications. Its rail-to-rail output stage with 5.6-V/V

• Low 9.8-mA at 3.3-V Total Quiescent Current

gain allows for both ac and dc line driving. This

• Low Differential Gain/Phase of 0.2%/0.35°

architecture makes the THS7375 an ideal choice for

DaVinci™ processors. The ability to drive two lines

• Lead-Free and Green TSSOP-14 Package

per channel, or 75-Ω loads, allows for maximum

flexibility as a video line driver. The 9.8-mA total

APPLICATIONS

quiescent current at 3.3 V and 0.1-mA disabled

• Set Top Box Output Video Buffering

current makes it an excellent choice for

• Portable Media Player Video Buffering

USB-powered, portable, or other power-sensitive

applications.

• Security/Surveillance Systems

• DaVinci/OMAP/DMxxx Video Buffering

The THS7375 is available in a TSSOP-14 package

that is lead-free and green (RoHS) compliant.

Figure 1. 3.3-V Single-Supply, DC-Input/DC-Output Coupled Video Line Driver

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2DaVinci is a trademark of Texas Instruments Incorporated.

3All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (39 pages)

PAGE 1
TH S73 THS7375 75 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 4-Channel SDTV Video Amplifier with 6th-Order Filters and 5.6-V/V Gain Check for Samples: THS7375 FEATURES DESCRIPTION • Fabricated using the revolutionary complementary Silicon-Germanium (SiGe) BiCom3X process, the THS7375 is a low-power, single-supply, 3 V to 5 V four-channel integrated video buffer.
PAGE 2
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
PAGE 3
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 ELECTRICAL CHARACTERISTICS: VS+ = +3.3 V RL = 150 Ω to GND, dc-coupled input and output, Filter Mode, unless otherwise noted. THS7375 TYP OVER TEMPERATURE TEST CONDITIONS +25°C +25°C 0°C to +70°C Small-signal bandwidth (–3 dB) VO = 0.2 VPP (1) 9.5 7.6/11.4 7.4/11.6 7.3/11.7 Min/ Max MHz Large-signal bandwidth (–3 dB) VO = 2 VPP (1) 9.5 7.6/11.4 7.4/11.6 7.3/11.
PAGE 4
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ = +3.3 V (continued) RL = 150 Ω to GND, dc-coupled input and output, Filter Mode, unless otherwise noted. THS7375 PARAMETER TYP OVER TEMPERATURE TEST CONDITIONS +25°C +25°C 0°C to +70°C VS+ to GND 3.3 5.5 5.5 5.5 MIN/ –40°C to TYP/ +85°C MAX UNITS POWER SUPPLY Maximum operating voltage Minimum operating voltage VS+ to GND (3) Max V 3.3 2.85 2.85 2.
PAGE 5
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 ELECTRICAL CHARACTERISTICS: VS+ = +5 V RL = 150 Ω to GND, dc-coupled input and output, Filter Mode, unless otherwise noted. THS7375 TYP OVER TEMPERATURE TEST CONDITIONS +25°C +25°C 0°C to +70°C Small-signal bandwidth (–3 dB) VO = 0.2 VPP (1) 9.5 7.6/11.4 7.4/11.6 7.3/11.7 Min/ Max MHz Large-signal bandwidth (–3 dB) VO = 2 VPP (1) 9.5 7.6/11.4 7.4/11.6 7.3/11.
PAGE 6
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ = +5 V (continued) RL = 150 Ω to GND, dc-coupled input and output, Filter Mode, unless otherwise noted. THS7375 PARAMETER TYP OVER TEMPERATURE TEST CONDITIONS +25°C +25°C 0°C to +70°C VS+ to GND 5 5.5 5.5 5.5 MIN/ –40°C to TYP/ +85°C MAX UNITS POWER SUPPLY Maximum operating voltage Minimum operating voltage VS+ to GND (2) Max V 5 2.85 2.85 2.
PAGE 7
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 PIN CONFIGURATION PW PACKAGE TSSOP-14 TOP VIEW CH1 IN 1 14 CH1 OUT CH2 IN 2 13 CH2 OUT CH3 IN 3 12 CH3 OUT CH4 IN 4 GND 5 10 VS+ DISABLE 6 9 BYPASS NC 7 8 NC THS7375IPW 11 CH4 OUT Table 1. TERMINAL FUNCTIONS TERMINAL NAME NO.
PAGE 8
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com FUNCTIONAL BLOCK DIAGRAM +VS gm Level Shift Channel 1 Input LPF Sync-Tip Clamp (DC Restore) 800 kW Bypass 5.6 V/V Channel 1 Output 5.6 V/V Channel 2 Output 5.6 V/V Channel 3 Output 5.6 V/V Channel 4 Output 6-Pole 9.5-MHz +VS gm Level Shift Channel 2 Input LPF Sync-Tip Clamp (DC Restore) 800 kW Bypass 6-Pole 9.5-MHz +VS gm Level Shift Channel 3 Input LPF Sync-Tip Clamp (DC Restore) 800 kW Bypass 6-Pole 9.
PAGE 9
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 TYPICAL CHARACTERISTICS RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. TOTAL QUIESCENT CURRENT vs TEMPERATURE OUTPUT OFFSET VOLTAGE vs TEMPERATURE 11.0 340 Output Offset Voltage (mV) Total Quiescent Current (mA) Input = 0 V 335 10.6 VS+ = 5 V 10.2 9.8 VS+ = 3.3 V 9.4 330 325 VS+ = 5 V 320 VS+ = 3.3 V 315 310 305 300 9.
PAGE 10
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. ATTENUATION AT 27 MHz vs TEMPERATURE Attenuation at 27 MHz (dB) 57 VS+ = 5 V 56 55 54 53 52 51 50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature (°C) Figure 8.
PAGE 11
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 TYPICAL CHARACTERISTICS: VS+ = 3.3 V RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. SMALL-SIGNAL GAIN vs FREQUENCY SMALL-SIGNAL GAIN vs FREQUENCY 15.5 20 Bypass Mode 0 RL = 75 W -10 RL = 150 W Filter Mode -20 RL = 150 W -30 -40 -50 VS+ = 3.3 V AC-Coupled Output CL = 10 pF VOUT = 200 mVPP -60 100 k 10 M 14.0 RL = 75 W and 150 W 13.5 Filter Mode 13.0 12.5 12.0 VS+ = 3.
PAGE 12
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ = 3.3 V (continued) RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. LARGE-SIGNAL GAIN vs FREQUENCY SMALL-SIGNAL GAIN vs FREQUENCY 15.5 20 Bypass Mode 14.5 VO = 1 VPP 14.0 VO = 2 VPP 13.5 VO = 2 VPP 13.0 VO = 0.2 VPP Filter Mode 12.5 12.0 11.5 VS+ = 3.3 V AC-Coupled Output Load = 150 W || 10 pF 11.0 100 k Small-Signal Gain (dB) DC VS+ = 3.
PAGE 13
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 TYPICAL CHARACTERISTICS: VS+ = 3.3 V (continued) RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. 3RD-ORDER HARMONIC DISTORTION vs OUTPUT VOLTAGE -40 VS+ = 3.
PAGE 14
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ = 3.3 V (continued) RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. RETURN LOSS vs FREQUENCY -5 VS+ = 3.3 V R = 75 W Return Loss (dB) -15 -25 -35 Filter Mode -45 Bypass Mode -55 100 k 1M 10 M 100 M Frequency (Hz) Figure 27.
PAGE 15
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 TYPICAL CHARACTERISTICS: VS+ = 5 V RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. SMALL-SIGNAL GAIN vs FREQUENCY SMALL-SIGNAL GAIN vs FREQUENCY 15.5 20 Bypass Mode 0 RL = 75 W -10 RL = 150 W Filter Mode -20 -30 -40 -50 RL = 150 W VS+ = 5 V AC-Coupled Output CL = 10 pF VOUT = 200 mVPP -60 100 k 10 M 14.5 14.0 AC or DC 13.5 13.0 12.5 12.0 11.5 RL = 75 W 1M Filter Mode Figure 29.
PAGE 16
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ = 5 V (continued) RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. LARGE-SIGNAL GAIN vs FREQUENCY 15.5 Bypass Mode VS+ = 5 V AC-Coupled Output Load = 150 W || 10 pF 13.5 Small-Signal Gain (dB) 14.0 Filter Mode 13.0 VO = 0.2 VPP 12.5 VO = 1 VPP 12.0 VO = 2 VPP VO = 2 VPP 11.
PAGE 17
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 TYPICAL CHARACTERISTICS: VS+ = 5 V (continued) RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted.
PAGE 18
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ = 5 V (continued) RL = 150 Ω to GND and dc-coupled input and output, unless otherwise noted. RETURN LOSS vs FREQUENCY -5 VS+ = 5 V R = 75 W Return Loss (dB) -15 -25 -35 Filter Mode -45 Bypass Mode -55 100 k 1M 10 M 100 M Frequency (Hz) Figure 46.
PAGE 19
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 APPLICATION INFORMATION The THS7375 is targeted for standard definition video output buffer applications. Although it can be used for numerous other applications, the needs and requirements of the video signal are the most important design parameters of the THS7375.
PAGE 20
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com TYPICAL CONFIGURATION AND VIDEO TERMINOLOGY This rationale is also used for the chroma (C') term. Chroma is derived from the nonlinear R'G'B' terms and thus it is also nonlinear. Chominance (C) is derived from linear RGB, giving the difference between chroma (C') and chrominance (C). The color difference signals (P'B/P'R/U'/V') are also referenced in this way to denote the nonlinear (gamma corrected) signals.
PAGE 21
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 INPUT MODE OF OPERATION: DC The THS7375 allows for both ac-coupled and dc-coupled inputs. Many DACs or video encoders can be dc-connected to the THS7375. One of the drawbacks to dc coupling, however, is when 0 V is applied to the input. Although the input of the THS7375 allows for a 0-V input signal with no issues, the output swing of a traditional amplifier cannot yield a 0-V signal, resulting in possible clipping.
PAGE 22
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com One of the concerns about the sync tip clamp level is how the clamp reacts to a sync edge that has overshoot—common in VCR signals or reflections found in poor printed circuit board (PCB) layouts. Ideally, the STC should not react to the overshoot voltage of the input signal. Otherwise, this issue could result in clipping on the remainder of the video signal because it may raise the bias voltage too much.
PAGE 23
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 To ensure proper stability of the ac STC control loop, the source impedance must be less than 1 kΩ with the input capacitor in place. Otherwise, there is a possibility for the control loop to ring; this ringing may appear on the THS7375 output. Because most DACs or encoders use resistors to establish the voltage, which are typically less than 500 Ω, meeting the less than 1-kΩ requirement is easily done.
PAGE 24
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com fluctuates depending on the video content. Because the corner frequency of the input is a very low 2.5 Hz, the corner frequency of the input is also a very low 2.5 Hz, which is respectable performance relative to a STC configuration. swing and an increase in power dissipation of the THS7375.
PAGE 25
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 OUTPUT MODE OF OPERATION: AC-COUPLED This configuration helps ensure line-to-line dc isolation and avoids the potential problems discussed above. Using a single 1000-mF capacitor for two lines can be done, but there is a chance for interference to be created between the two receivers. A very common method of coupling the video signal to the line is the use of a large capacitor.
PAGE 26
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com LOW-PASS FILTER Each channel of the THS7375 incorporates a sixth-order low-pass filter. These video reconstruction filters minimize the passing of DAC images to the video receiver. Depending on the receiver design, failure to eliminate these DAC images can cause picture quality problems as a result of ADC aliasing.
PAGE 27
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 These filters have been specified by design to account for process and temperature variations to maintain proper filter characteristics. This architecture maintains a low channel-to-channel time delay, which is required for proper video signal performance. Another benefit of the THS7375 over a passive RLC filter is the input and output impedance.
PAGE 28
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com The DAC must have a defined termination resistance to properly set the output voltage. R1 and R2 sum together to accomplish this requirement such that R1 + R2 = DAC termination resistance. • • • The voltage divider, formed by R1 and R2, also creates a voltage divider that reduces the signal voltage appearing at the THS7375 input terminal. The voltage appearing at the THS7375 input is equal to VDAC R2/(R1 + R2).
PAGE 29
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 Figure 55.
PAGE 30
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com TEXAS INSTRUMENTS THS7375IPW EVM EDGE # 6502996 REV. A Figure 56.
PAGE 31
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 Figure 57.
PAGE 32
THS7375 SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 www.ti.com THS7375EVM Bill of Materials Table 2. THS7375 EVM 32 ITEM REF DES QTY DESCRIPTION 1 FB1 1 Bead, Ferrite, 2.5 A, 330 Ω SMD SIZE 0805 MANUFACTURER PART NUMBER DISTRIBUTOR PART NUMBER (TDK) MPZ2012S331A (Digi-Key) 445-1569-1-ND (AVX) TPSC107K010R0100 (Digi-Key) 478-1765-1-ND 2 C24 1 Capacitor, 100 mF, Tantalum, 10 V, 10%, Low-ESR 3 C1–C4, C7–C10, C19, C20–C22 12 Open 0805 4 C5 1 Capacitor, 0.
PAGE 33
THS7375 www.ti.com SBOS449A – SEPTEMBER 2008 – REVISED JANUARY 2011 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (September 2008) to Revision A Page • Added Figure 26 ................................................................................................................................................................. 13 • Added Figure 45 ..................................................................
PAGE 34
PACKAGE OPTION ADDENDUM www.ti.
PAGE 35
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device THS7375IPWR Package Package Pins Type Drawing TSSOP PW 14 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 12.4 Pack Materials-Page 1 6.9 B0 (mm) K0 (mm) P1 (mm) 5.6 1.6 8.0 W Pin1 (mm) Quadrant 12.
PAGE 36
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) THS7375IPWR TSSOP PW 14 2000 367.0 367.0 35.
PAGE 37
PAGE 38
PAGE 39
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46C and to discontinue any product or service per JESD48B. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.