Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Voltage feedback VSSOP 8

THS4221, THS4225

THS4222, THS4226

SLOS399G − AUGUST 2002 − REVISED JANUARY 2004

LOW-DISTORTION, HIGH-SPEED, RAIL-TO-RAIL OUTPUT

OPERATIONAL AMPLIFIERS

DBV−5

DGN−8

DGK−8

DGQ−10

D−8

FEATURES

D Rail-to-Rail Output Swing

− V

= −4.8/4.8 (R

= 2 kΩ)

D High Speed

− 230 MHz Bandwidth (−3 dB, G= 1)

− 975 V/µs Slew Rate

D Ultra-Low Distortion

− HD2 = −90 dBc (f = 5 MHz, R

= 499Ω)

− HD3 = −100 dBc (f = 5 MHz, R

= 499Ω)

D High Output Drive, I

= 100 mA (typ)

D Excellent Video Performance

− 40 MHz Bandwidth (0.1 dB, G = 2)

− 0.007% Differential Gain

− 0.007° Differential Phase

D Wide Range of Power Supplies

− V

= 3 V to 15 V

D Power-Down Mode (THS4225/6)

D Evaluation Module Available

APPLICATIONS

D Low-Voltage Analog-to-Digital Converter

Preamplifier

D Active Filtering

D Video Applications

1OUT

1IN−

1IN+

S−

S+

2OUT

2IN−

2IN+

THS4222

D, DGN, OR DGK PACKAGE

(TOP VIEW)

RELATED DEVICES

DEVICE DESCRIPTION

THS4211 1 GHz, 800 V/µs, Vn = 7 nV/√Hz

THS4271 1.4 GHz, 900 V/µs, Vn = 3 nV/√Hz

OPA354 250 MHz, 150 V/µs, Vn = 6.5 nV/√Hz

OPA690 500 MHz, 1800 V/µs, Vn = 5.5 nV/√Hz

DESCRIPTION

The THS4222 family is a set of rail-to-rail output single, and dual low-voltage, high-output swing, low-distortion high-speed

amplifiers ideal for driving data converters, video switching or low distortion applications.This family of voltage feedback

amplifiers can operate from a single 15-V power supply down to a single 3-V power supply while consuming only 14 mA of

quiescent current per channel. In addition, the family offers excellent ac performance with 230-MHz bandwidth, 975-V/µs

slew rate and harmonic distortion (THD) at –90 dBc at 5 MHz.

1 kΩ

650 Ω

1.3 kΩ

−

5 V

2.5 V

IN+

THS4222

650 Ω

1.3 kΩ

−

2.5 V

IN−

out−

out+

400

600

1200

1400

1600

1800

012 4 5

− Differential Output Voltage Step − V

SR − Slew Rate −

SLEW RATE

DIFFERENTIAL OUTPUT VOLTAGE STEP

sµ

200

1000

800

6789103

Rise

Fall

DIFFERENTIAL DRIVE CIRCUIT

0.1 µF

10 µF

PRODUCTION DATA information is current as of publication date. Products

conform to specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

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.

www.ti.com

Summary of content (40 pages)

PAGE 1
DBV−5 D−8 www.ti.com DGQ−10 DGN−8 THS4221, THS4225 THS4222, THS4226 DGK−8 SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 LOW-DISTORTION, HIGH-SPEED, RAIL-TO-RAIL OUTPUT OPERATIONAL AMPLIFIERS FEATURES APPLICATIONS D Low-Voltage Analog-to-Digital Converter D Rail-to-Rail Output Swing D D − VO = −4.8/4.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 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. ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range unless otherwise noted(1) UNIT 16.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 THS4222 AND THS4226 DUAL PACKAGE/ORDERING INFORMATION PACKAGED DEVICES (1) PLASTIC MSOP PowerPADE(1) PLASTIC MSOPE(1) PLASTIC SMALL OUTLINE (D)(1) (DGN) SYM (DGQ) SYM (DGK) SYM THS4222D THS4222DGN BFO — — THS4222DGK BHW — — — THS4226DGQ BFP — — All packages are available taped and reeled. The R suffix standard quantity is 2500 (e.g., THS4222DGNR).
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 ELECTRICAL CHARACTERISTICS VS = ±5 V, RL = 499 Ω, and G = 1 unless otherwise noted TYP OVER TEMPERATURE 25°C 25°C 0°C to 70°C −40°C to 85°C UNITS MIN/ MAX RL = 499 Ω −4.7 / 4.7 −4.5 / 4.5 −4.4 / 4.4 −4.4 / 4.4 V Min PARAMETER TEST CONDITIONS OUTPUT CHARACTERISTICS Output voltage swing RL = 2 kΩ −4.8 / 4.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 ELECTRICAL CHARACTERISTICS VS = 5 V, RL = 499 Ω, and G = 1 unless otherwise noted TYP PARAMETER TEST CONDITIONS 25°C OVER TEMPERATURE 25°C 0°C to 70°C −40°C to 85°C UNITS MIN/ MAX AC PERFORMANCE Small signal bandwidth G = 1, PIN = −7 dBm 200 MHz Typ G = 2, PIN = −13 dBm, Rf = 1.3 kΩ 100 MHz Typ G = 5, PIN = −21 dBm, Rf = 2 kΩ 25 MHz Typ G = 10, PIN = −27 dBm, Rf = 2 kΩ 12 MHz Typ 0.
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THS4221, THS4225 THS4222, THS4226 www.ti.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 ELECTRICAL CHARACTERISTICS VS = 3.3 V, RL = 499 Ω, and G = 1 unless otherwise noted TYP PARAMETER TEST CONDITIONS 25°C OVER TEMPERATURE 25°C 0°C to 70°C −40°C to 85°C UNITS MIN/ MAX AC PERFORMANCE Small signal bandwidth G = 1, PIN = −7 dBm 200 MHz Typ G = 2, PIN = −13 dBm, Rf = 1 kΩ 100 MHz Typ G = 5, PIN = −21 dBm, Rf = 2 kΩ 15 MHz Typ G = 10, PIN = −27 dBm, Rf = 2 kΩ 12 MHz Typ 0.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 ELECTRICAL CHARACTERISTICS (continued) VS = 3.3 V, RL = 499 Ω, and G = 1 unless otherwise noted TYP PARAMETER TEST CONDITIONS OVER TEMPERATURE 25°C 25°C 0°C to 70°C −40°C to 85°C 3.
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THS4221, THS4225 THS4222, THS4226 www.ti.
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THS4221, THS4225 THS4222, THS4226 www.ti.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 HARMONIC DISTORTION vs FREQUENCY HARMONIC DISTORTION vs FREQUENCY 0 Gain = 1 RL = 150 Ω VO = 2 VPP VS = ±5 V −30 −40 −50 −60 HD2 −70 −20 Harmonic Distortion − dBc −80 −30 −40 −50 −60 −70 HD2 −80 HD3 −90 HD3 −90 0.1 1 10 f − Frequency − MHz 0.1 100 1 10 f − Frequency − MHz Figure 4 −40 −50 −60 −80 100 −40 HD3, 5 V HD3, ±5 V −60 −70 HD2, ±5 V −80 −20 −30 −50 −60 −70 0 HD3 −80 4.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 DIFFERENTIAL GAIN vs NUMBER OF LOADS 0.14 0.12 0.10 VS = 5 V 0.08 0.06 0.04 0.2 0.15 0.1 3 4 5 10 5 110 4 100 0 1 3 2 TA = −40 to 85°C −1 −2 −3 −4 100 1k RL − Load Resistance − Ω 90 10 k 6 4 Rejection Ratio − dB CMMR PSRR 40 30 20 140 60 120 50 100 40 80 30 60 20 40 10 20 4 4.5 5 100 100 95 0 −20 1000 90 1.5 2 2.5 3 3.5 4 4.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 100 4 90 70 60 50 40 30 20 VS = ±5 V TA = 25°C −6 −4 −2 0 2 4 3 VS = 5 V 2.5 2 1.5 1 0.5 VS = ±5 V 0 −40−30−20−10 0 10 20 30 40 50 60 70 80 90 6 VICR − Input Common-Mode Voltage Range − V Case Temperature − °C Figure 22 Figure 23 INPUT BIAS AND OFFSET CURRENT vs CASE TEMPERATURE 0.82 IOS 0.8 10 0.9 5 0.88 0 IIB+ 0.78 −5 IIB− 0.76 −10 0.74 −15 0.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 APPLICATION INFORMATION HIGH-SPEED OPERATIONAL AMPLIFIERS The THS4222 family of operational amplifiers is a family of single and dual, rail-to-rail output voltage feedback amplifiers. The THS4222 family combines both a high slew rate and a rail-to-rail output stage.
PAGE 15
THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 In the inverting configuration, some key design considerations must be noted. One is that the gain resistor (Rg) becomes part of the signal channel input impedance.
PAGE 16
THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 Power-Down Reference Pin Operation In addition to the power-down pin, the THS4225 features a reference pin (REF) which allows the user to control the enable or disable power-down voltage levels applied to the PD pin. Operation of the reference pin as it relates to the power-down pin is described below. In most split-supply applications, the reference pin is connected to ground.
PAGE 17
THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 APPLICATION CIRCUITS Driving an Analog-to-Digital Converter With the THS4222 The THS4222 can be used to drive high-performance analog-to-digital converters. Two example circuits are presented below. The first circuit uses a wideband transformer to convert a single-ended input signal into a differential signal. The differential signal is then amplified and filtered by two THS4222 amplifiers.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 NOISE ANALYSIS High slew rates, stable unity gain, voltage-feedback operational amplifiers usually achieve their slew rate at the expense of a higher input noise voltage. The input-referred voltage noise, and the two input-referred current noise terms, combine to give low output noise under a wide variety of operating conditions. Figure 35 shows the amplifier noise analysis model with all the noise terms included.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 the feedback resistor directly under the package on the other side of the board between the output and inverting input pins. Even with a low parasitic capacitance shunting the external resistors, excessively high resistor values can create significant time constants that can degrade performance. Good axial metal-film or surface-mount resistors have approximately 0.2 pF in shunt with the resistor.
PAGE 20
THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 prevents solder from being pulled away from the thermal pad area during the reflow process. 0.205 0.060 0.017 Pin 1 0.030 0.025 0.094 0.035 0.040 Top View Figure 37. PowerPAD PCB Etch and Via Pattern PowerPAD PCB LAYOUT CONSIDERATIONS 1. Prepare the PCB with a top side etch pattern as shown in Figure 37. There should be etch for the leads as well as etch for the thermal pad. 2.
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 P Dmax + DESIGN TOOLS Tmax–T A q JA where: PDmax is the maximum power dissipation in the amplifier (W). Tmax is the absolute maximum junction temperature (°C). TA is the ambient temperature (°C). θJA = θJC + θCA θJC is the thermal coefficient from the silicon junctions to the case (°C/W). θCA is the thermal coefficient from the case to ambient air (°C/W).
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THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 Figure 40. THS4222 EVM Board Layout (Top Layer) Figure 41. THS4222 EVM Board Layout (2nd Layer, Ground) 22 Figure 42. THS4222 EVM Board Layout (3rd Layer, Power) Figure 43.
PAGE 23
THS4221, THS4225 THS4222, THS4226 www.ti.com SLOS399G − AUGUST 2002 − REVISED JANUARY 2004 Computer simulation of circuit performance using SPICE is often useful when analyzing the performance of analog circuits and systems. This is particularly true for video and RF amplifier circuits where parasitic capacitance and inductance can have a major effect on circuit performance. A SPICE model for the THS4222 family is available through the Texas Instruments web site (www.ti.com).
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 25
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
PAGE 27
PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ THS4221DBVR SOT-23 3000 180.0 DBV 5 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) 9.0 3.15 3.2 1.4 4.0 W Pin1 (mm) Quadrant 8.0 Q3 THS4221DBVT SOT-23 DBV 5 250 180.0 9.0 3.15 3.2 1.4 4.0 8.0 Q3 THS4221DGKR VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 16-Aug-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) THS4221DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 THS4221DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 THS4221DGKR VSSOP DGK 8 2500 358.0 335.0 35.0 THS4222DGNR MSOP-PowerPAD DGN 8 2500 358.0 335.0 35.0 THS4222DR SOIC D 8 2500 367.0 367.0 35.
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