Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Current feedback HTSSOP 14

1 OUT

1 IN−

1 IN+

CC−

N/C

REF

N/C

CC+

2 OUT

2 IN−

2 IN+

N/C

SHUTDOWN

N/C

100

0.01 0.1 1 10 100

f − Frequency − kHz

n−

VOLTAGE NOISE AND CURRENT NOISE

FREQUENCY

V Voltage Noise nV/

I Current Noise pA/

- -

V = 5 V to 15 V

T = +25 C

± ±

1 OUT

1 IN−

1 IN+

CC−

CC+

2 OUT

2 IN−

2 IN+

THS3122

SOIC (D) AND

SOIC PowerPAD (DDA) PACKAGE

(TOP VIEW)

THS3125

SOIC (D) AND

TSSOP PowerPAD (PWP) PACKAGE

(TOP VIEW)

THS3122

THS3125

www.ti.com

SLOS382D –SEPTEMBER 2001– REVISED FEBRUARY 2011

LOW-NOISE, HIGH-SPEED, 450-mA CURRENT FEEDBACK AMPLIFIERS

Check for Samples: THS3122, THS3125

FEATURES

APPLICATIONS

• Video Distribution

• Low Noise:

• Instrumentation

– 2.9-pA/√Hz Noninverting Current Noise

• Line Drivers

– 10.8-pA/√Hz Inverting Current Noise

• Motor Drivers

– 2.2-nV/√Hz Voltage Noise

• Piezo Drivers

– 128-MHz , –3-dB BW (R

= 50 Ω, R

= 470 Ω)

– 1550-V/µs Slew Rate (G = 2, R

= 50Ω )

DESCRIPTION

• High Output Current: 450 mA

The THS3122/5 are low-noise, high-speed current

• High Speed:

feedback amplifiers, with high output current drive.

– 128-MHz , –3-dB BW (R

= 50 Ω, R

= 470 Ω)

This makes them ideal for any application that

requires low distortion over a wide frequency with

– 1550-V/µs Slew Rate (G = 2, R

= 50Ω )

heavy loads. The THS3122/5 can drive four

– 26-V

Output Voltage, R

= 50 Ω

serially-terminated video lines while maintaining a

– –80 dBc (1 MHz, 2 V

, G = 2)

differential gain error less than 0.03%.

• Wide Output Swing:

The high output drive capability of the THS3122/5

– 26-V

Output Voltage, R

= 50 Ω

enables the devices to drive 50-Ω loads with low

distortion over a wide range of output voltages:

– –80 dBc (1 MHz, 2 V

, G = 2)

• –80-dBc THD at 2 V

– 370-µA Shutdown Supply Current

• -75-dBc THD at 8 V

• Low Distortion:

The THS3122/5 can operate from ±5-V to ±15-V

– –80 dBc (1 MHz, 2 V

, G = 2)

supply voltages while drawing as little as 7.2 mA of

– 370-µA Shutdown Supply Current

supply current per channel. The THS3125 offers a

• Low-Power Shutdown Mode (THS3125)

low-power shutdown mode, reducing the supply

current to only 370 µA. The THS3122/5 are packaged

– 370-µA Shutdown Supply Current

in a standard SOIC, SOIC PowerPAD™, and TSSOP

• Standard SOIC, SOIC PowerPAD™, and

PowerPAD packages.

TSSOP PowerPAD Packages

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 (34 pages)

PAGE 1
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com LOW-NOISE, HIGH-SPEED, 450-mA CURRENT FEEDBACK AMPLIFIERS Check for Samples: THS3122, THS3125 FEATURES APPLICATIONS • • • • • • 1 23 • • • • • • Low Noise: – 2.9-pA/√Hz Noninverting Current Noise – 10.8-pA/√Hz Inverting Current Noise – 2.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 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.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com RECOMMENDED OPERATING CONDITIONS MIN NOM Supply voltage, VCC+ to VCC– ±5 ±15 Single supply 10 30 0 +70 –40 +85 C-suffix Operating free-air temperature, TA MAX Dual supply I-suffix UNIT V °C ELECTRICAL CHARACTERISTICS Over operating free-air temperature range, TA = +25°C, VCC = ±15 V, RF = 750 Ω, and RL = 100 Ω (unless otherwise noted).
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over operating free-air temperature range, TA = +25°C, VCC = ±15 V, RF = 750 Ω, and RL = 100 Ω (unless otherwise noted).
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over operating free-air temperature range, TA = +25°C, VCC = ±15 V, RF = 750 Ω, and RL = 100 Ω (unless otherwise noted). POWER SUPPLY PARAMETER TEST CONDITIONS VCC = ±5 V ICC TYP MAX 7.2 9 8.4 10.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com TYPICAL CHARACTERISTICS SMALL-SIGNAL CLOSED-LOOP GAIN vs FREQUENCY RF = 680 Ω −6 RF = 500 Ω −9 −12 −15 −18 −21 G = −1, VCC = ±5 V, RL = 50 Ω −24 −27 −30 0.1 1 10 100 −12 −15 −18 −21 G = −1, VCC = ±15 V, RL = 50 Ω −24 −27 0 RF = 750 Ω −1 RF = 560 Ω −2 −3 −4 G = 1, VCC = ±5 V, RL = 50 Ω −5 −6 1 10 100 0.1 1000 1 10 100 1000 Figure 1. Figure 2. Figure 3.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) SMALL- AND LARGE-SIGNAL OUTPUT vs FREQUENCY 18 RF = 200 Ω 12 Small and Large Signal Output − dB 9 RF = 470 Ω 6 3 RF = 560 Ω 0 −3 −6 VCC = ±15 V, RL = 50 Ω −9 12 2 VPP 6 1 VPP 0 0.5 VPP −6 0.25 VPP −12 0.125 VPP −18 −24 −12 0.1 1 10 100 0.1 1000 100 2 VPP 6 1 VPP 0 0.5 VPP −6 0.25 VPP −12 0.125 VPP −18 −24 0.1 1000 100 Figure 11. Figure 12.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) CROSSTALK vs FREQUENCY 80 −10 VCC = ±15 V −20 60 50 VCC = ±5 V 40 30 10 0 0.1 −40 −50 −60 1 10 1 0.1 100 −80 0.1 1000 1 10 100 0.01 1000 0.1 Figure 20. Figure 21.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) QUIESCENT CURRENT vs SUPPLY VOLTAGE SHUTDOWN SUPPLY CURRENT vs FREE-AIR TEMPERATURE 450 12 8 25 °C 6 −40 °C Shutdown Supply Current − µ A I CC − Quiescent Current − mA VSD = 3.3 V RF = 750 Ω 400 85 °C 10 4 2 350 VCC = ±15 V 300 250 VCC = ±5 V 200 150 100 50 0 0 0 2.5 5 7.5 10 12.5 −40 15 10 35 60 85 Figure 28. Figure 29.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) LARGE-SIGNAL PULSE RESPONSE 3 3 0.2 2 2 0.1 0 −0.1 VCC = ±15 V, G = 2, RF = 470 Ω, RL = 50 Ω −0.2 0 −1 VCC = ±5 V, G = 2, RF = 470 Ω, RL = 50 Ω 100 200 300 400 500 600 1 0 −1 −3 0 100 200 300 VCC = ±15 V, G = 2, RF = 470 Ω, RL = 50 Ω −2 −3 0 10 1 −2 −0.3 VO − Output Voltage − V LARGE-SIGNAL PULSE RESPONSE 0.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com APPLICATION INFORMATION Maximum Slew Rate for Repetitive Signals The THS3125 and THS3122 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. The THS3125 and THS3122 are not recommended for applications with repetitive signals (sine, square, sawtooth, or other) that exceed 900 V/µs.
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THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com Single-Supply Operation 470 W The THS3125 and THS3122 have the capability to operate from a single supply voltage ranging from 10 V to 30 V. When operating from a single power supply, biasing the input and output at mid-supply allows for the maximum output voltage swing. The circuits in Figure 39 show inverting and noninverting amplifiers configured for single-supply operation.
PAGE 13
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com Placing a small series resistor, RISO, between the amplifier output and the capacitive load, as shown in Figure 42, is an easy way of isolating the load capacitance. RF +VS RG RISO 5.11 W 100-W Load Figure 44 shows another method used to maintain the low-frequency load independence of the amplifier while isolating the phase shift caused by the capacitance at high frequency.
PAGE 14
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com Figure 46 shows a configuration that uses two amplifiers in parallel to double the output drive current to larger capacitive loads. This technique is used when more output current is needed to charge and discharge the load faster as when driving large FET transistors. RF +VS RG 5.11 W 24.9 W -VS RF +VS +VS 1 nF RG 5.11 W 24.9 W -VS Figure 46.
PAGE 15
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com Power-Down Reference Pin Operation In addition to the shutdown pin, the THS3125 features a reference pin (REF) which allows the user to control the enable or disable power-down voltage levels applied to the SHUTDOWN pin. In most split-supply applications, the reference pin is connected to ground. In either case, the user must be aware of voltage-level thresholds that apply to the shutdown pin.
PAGE 16
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 • 16 Connections to other wideband devices on the board may be made with short direct traces or through onboard transmission lines. For short connections, consider the trace and the input to the next device as a lumped capacitive load. Relatively wide traces [0.05 inch (1,3 mm) to 0.1 inch (2,54 mm)] should be used, preferably with ground and power planes opened up around them.
PAGE 17
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com PowerPAD™ Layout Considerations 0.205 (5,21) 0.060 (1,52) Pin 1 0.017 (0,432) 0.013 (0,33) 0.075 (1,91) 0.094 (2,39) 0.030 (0,76) 0.025 (0,64) 0.010 (0,254) vias 0.035 (0,89) 0.040 (1,01) Top View Dimensions are in inches (millimeters). Figure 49. DGN PowerPAD PCB Etch and Via Pattern Although there are many ways to properly heatsink the PowerPAD package, the following steps illustrate the recommended approach. 1.
PAGE 18
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 When determining whether or not the device satisfies the maximum power dissipation requirement, it is important to not only consider quiescent power dissipation, but also dynamic power dissipation. Often times, this type of dissipation is difficult to quantify because the signal pattern is inconsistent, but an estimate of the RMS power dissipation can provide visibility into a possible problem.
PAGE 19
THS3122 THS3125 SLOS382D – SEPTEMBER 2001 – REVISED FEBRUARY 2011 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision C (July, 2010) to Revision D • Page Changed output current (absolute maximum) from 275 mA to 550 mA ...............................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com Orderable Device 11-Apr-2013 Status (1) THS3125IPWPRG4 ACTIVE Package Type Package Pins Package Drawing Qty HTSSOP PWP 14 2000 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) CU NIPDAU Level-2-260C-1 YEAR (4) -40 to 85 HS3125I (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
PAGE 22
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 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 THS3122CDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 THS3125IPWPR HTSSOP PWP 14 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.
PAGE 23
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) THS3122CDR SOIC D 8 2500 367.0 367.0 35.0 THS3125IPWPR HTSSOP PWP 14 2000 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.