Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Current feedback MSOP 8 PowerPad

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0 1 2 3 4 5 6 7 8

Number of 150 Ω Loads

Differential Gain − %

PAL

NTSC

Gain = 2,

= 649 Ω,

= ±15 V,

40 IRE − NTSC and PAL,

Worst Case ±100 IRE Ramp

−

75 Ω

n Lines

O(1)

O(n)

75-Ω Transmission Line

649 Ω 649 Ω

−15 V

15 V

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0 1 2 3 4 5 6 7 8

Number of 150 Ω Loads

Differential Phase − deg

PAL

NTSC

Gain = 2,

= 649 Ω,

= ±15 V,

40 IRE − NTSC and PAL,

Worst Case ±100 IRE Ramp

DIFFERENTIAL PHASE

NUMBER OF LOADS

DIFFERENTIAL GAIN

NUMBER OF LOADS

VIDEO DISTRIBUTION AMPLIFIER APPLICATION

THS3120

THS3121

www.ti.com

........................................................................................................................................ SLOS420E –SEPTEMBER 2003–REVISED OCTOBER 2009

LOW-NOISE, HIGH-OUTPUT DRIVE, CURRENT-FEEDBACK

OPERATIONAL AMPLIFIERS

Check for Samples: THS3120 THS3121

FEATURES

DESCRIPTION

• Low Noise:

The THS3120 and THS3121 are low-noise,

high-voltage, high output current drive,

– 1 pA/√Hz Noninverting Current Noise

current-feedback amplifiers designed to operate over

– 10 pA/√Hz Inverting Current Noise

a wide supply range of ±5 V to ±15 V for today's

– 2.5 nV/√Hz Voltage Noise

high-performance applications.

• High Output Current Drive: 475 mA

The THS3120 offers a power saving mode by

• High Slew Rate:

providing a power-down pin for reducing the 7-mA

quiescent current of the device, when the device is

– 1700 V/μs (R

= 50 Ω, V

= 8 V

)

not active.

• Wide Bandwidth: 120 MHz (G = 2, R

= 50 Ω)

These amplifiers provide well-regulated ac

• Wide Supply Range: ±5 V to ±15 V

performance characteristics. Most notably, the 0.1-dB

• Power-Down Feature: (THS3120 Only)

flat bandwidth is exceedingly high, reaching beyond

90 MHz. The unity-gain bandwidth of 130 MHz allows

APPLICATIONS

for good distortion characteristics at 10 MHz. Coupled

• Video Distribution

with high 1700-V/μs slew rate, the THS3120 and

THS3121 amplifiers allow for high output voltage

• Power FET Driver

swings at high frequencies.

• Pin Driver

• Capacitive Load Driver

The THS3120 and THS3121 are offered in an

SOIC-8 (D) package and an MSOP-8 (DGN)

PowerPAD™ package.

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.

2PowerPAD is a trademark of Texas Instruments.

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 (35 pages)

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THS3120 THS3121 www.ti.com........................................................................................................................................
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ 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.
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THS3120 THS3121 www.ti.com........................................................................................................................................
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com ELECTRICAL CHARACTERISTICS At VS = ±15 V, RF = 649 Ω, RL = 50 Ω, and G = 2, unless otherwise noted.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 ELECTRICAL CHARACTERISTICS (continued) At VS = ±15 V, RF = 649 Ω, RL = 50 Ω, and G = 2, unless otherwise noted. TYP OVER TEMPERATURE +25°C +25°C 0°C to +70°C –40°C to +85°C Specified operating voltage ±15 ±16 ±16 Maximum quiescent current 7 8.5 11 Minimum quiescent current 7 5.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com ELECTRICAL CHARACTERISTICS At VS = ±5 V, RF = 750 Ω, RL = 50 Ω, and G = 2, unless otherwise noted.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 ELECTRICAL CHARACTERISTICS (continued) At VS = ±5 V, RF = 750 Ω, RL = 50 Ω, and G = 2, unless otherwise noted. TYP OVER TEMPERATURE +25°C +25°C 0°C to +70°C –40°C to +85°C Specified operating voltage ±5 ±4.5 ±4.5 ±4.5 V MIN Maximum quiescent current 6.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com TYPICAL CHARACTERISTICS TABLE OF GRAPHS ±15-V Graphs FIGURE Noninverting small-signal gain frequency response 1, 2 Inverting small-signal gain frequency response 3 0.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 TYPICAL CHARACTERISTICS (±15 V) blank NONINVERTING SMALL-SIGNAL FREQUENCY RESPONSE 9 RF = 475 Ω RF = 649 Ω 7 Noninverting Gain − dB 6 5 RF = 750 Ω 4 3 Gain = 2, RL = 50 Ω, VO = 0.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 TYPICAL CHARACTERISTICS (±15 V) (continued) blank INPUT BIAS AND OFFSET CURRENT vs CASE TEMPERATURE 16 14 12 10 8 6 4 2 0 −2 −4 −6 −8 −10 −12 −14 −16 6 VS = ±15 V 3.5 VOS − Input Offset Voltage − mV IIB− 3 2.5 VS = ±15 V TA = −40 to 85°C 2 IOS 1.5 1 IIB+ 0.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com TYPICAL CHARACTERISTICS (±15 V) (continued) blank INVERTING LARGE-SIGNAL TRANSIENT RESPONSE OVERDRIVE RECOVERY TIME 20 Output Output Voltage - V 2 1 0 Input -1 -2 Gain = -5, RL = 50 Ω, RF = 499 Ω, VS = ±15 V -3 -4 -5 -6 0.04 0.05 0.06 0.07 0.08 0.09 0.1 1 0 0 0.04 PAL 0.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 TYPICAL CHARACTERISTICS (±5 V) blank RL = 50 Ω, VO = 0.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com TYPICAL CHARACTERISTICS (±5 V) (continued) blank INVERTING LARGE-SIGNAL TRANSIENT RESPONSE 0.3 Output 0.15 VO - Output Voltage - V Input 0.1 0.05 0 -0.05 -0.1 Gain = 2 RL = 50 Ω RF = 750 Ω VS = ±5 V -0.15 -0.2 -0.25 10 20 30 Output 2 1.5 1 0.5 0 -0.5 -1 -1.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 APPLICATION INFORMATION MAXIMUM SLEW RATE FOR REPETITIVE SIGNALS The THS3120 and THS3121 are recommended for high slew rate pulsed applications where the internal nodes of the amplifier have time to stabilize between pulses. It is recommended to have at least 20-ns delay between pulses.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com WIDEBAND, INVERTING OPERATION +VS Figure 48 shows the THS3121 in a typical inverting gain configuration where the input and output impedances and signal gain from Figure 47 are retained in an inverting circuit configuration. 50 Ω Source + VI 49.9 Ω RT 15 V +VS 0.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 Driving Capacitive Loads Applications such as FET drivers and line drivers can be highly capacitive and cause stability problems for high-speed amplifiers. Figure 51 through Figure 57 show recommended methods for driving capacitive loads.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com Figure 57 shows a push-pull FET driver circuit typical of ultrasound applications with isolation resistors to isolate the gate capacitance from the amplifier. RF 27 pF 499 Ω FIN RG FB 124 Ω VS VS _ 5.11 Ω + _ + 1 µF -VS VS 100 Ω LOAD 5.11 Ω VS -VS 49.9 Ω 301 Ω 66.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 Figure 58 shows the total system output impedance which includes the amplifier output impedance in parallel with the feedback plus gain resistors, which cumulate to 1298 Ω. Figure 47 shows this circuit configuration for reference.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com PRINTED-CIRCUIT BOARD LAYOUT TECHNIQUES FOR OPTIMAL PERFORMANCE Achieving optimum performance with high frequency amplifiers, like the THS3120 and THS3121, requires careful attention to board layout parasitic and external component types.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 PowerPAD DESIGN CONSIDERATIONS The THS3120 and THS3121 are available in a thermally-enhanced PowerPAD family of packages. These packages are constructed using a downset leadframe upon which the die is mounted (see Figure 59a and Figure 59b).
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com POWER DISSIPATION AND THERMAL CONSIDERATIONS The THS3120 and THS3121 incorporate automatic thermal shutoff protection. This protection circuitry shuts down the amplifier if the junction temperature exceeds approximately +160°C.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 the distortion characteristics of the amplifier, nor do they attempt to distinguish between the package types in the small-signal ac performance. Detailed information about what is and is not modeled is contained in the model file itself.
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THS3120 THS3121 SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009........................................................................................................................................ www.ti.com Table 3. Bill of Materials THS3120DGN and THS3121DGN EVM DESCRIPTION SMD SIZE REFERENCE DESIGNATOR PCB QUANTITY MANUFACTURER'S PART NUMBER (1) 1 Bead, ferrite, 3 A, 80 Ω 1206 FB1, FB2 2 (Steward) HI1206N800R-00 2 Cap. 6.
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THS3120 THS3121 www.ti.com........................................................................................................................................ SLOS420E – SEPTEMBER 2003 – REVISED OCTOBER 2009 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (January 2009) to Revision E ...............................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 18-Oct-2013 Status (1) THS3121IDGNG4 ACTIVE Package Type Package Pins Package Drawing Qty MSOPPowerPAD DGN 8 80 Eco Plan Lead/Ball Finish MSL Peak Temp (2) (6) (3) Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Op Temp (°C) Device Marking (4/5) -40 to 85 APO (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant THS3120CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 THS3121CDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) THS3120CDGNR MSOP-PowerPAD DGN 8 2500 358.0 335.0 35.0 THS3121CDR SOIC D 8 2500 367.0 367.0 35.
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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 JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.