IC OPAMP VFB 400MHZ SGL HS 8MSOP

 

THS4271DGK

Manufacturer Part NumberTHS4271DGK
DescriptionIC OPAMP VFB 400MHZ SGL HS 8MSOP
ManufacturerTexas Instruments
THS4271DGK datasheets

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Specifications of THS4271DGK

Amplifier TypeVoltage FeedbackNumber Of Circuits1
Slew Rate1000 V/µsGain Bandwidth Product400MHz
-3db Bandwidth1.4GHzCurrent - Input Bias6µA
Voltage - Input Offset5000µVCurrent - Supply22mA
Current - Output / Channel160mAVoltage - Supply, Single/dual (±)5 V ~ 15 V, ±2.5 V ~ 7.5 V
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,Number Of Channels1
Voltage Gain Db68 dBInput Offset Voltage10 mV @ 5V
Operating Supply Voltage9 V or 12 VSupply Current24 mA
Maximum Power Dissipation385 mWMounting StyleSMD/SMT
Common Mode Rejection Ratio (min)67 dBInput Bias Current (max)15 uA @ 5V
Maximum Operating Temperature+ 85 CMinimum Operating Temperature- 40 C
Output Current (typ)160 mAProductVoltage Feedback Amplifier
Settling Time25 nsSupply Voltage (max)15 V
Supply Voltage (min)5 VFor Use With296-20554 - EVAL MOD W/UNITY GAIN THS4271296-20553 - EVAL MOD FOR THS4271
Lead Free Status / RoHS StatusLead free / RoHS CompliantOutput Type-
Other names296-16785-5  
show all specifications
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LOW NOISE, HIGH SLEW RATE, UNITY GAIN STABLE
FEATURES
1
• Unity Gain Stability
23
•
Low Voltage Noise
– 3 nV/√Hz
•
High Slew Rate: 1000 V/μs
•
Low Distortion
– –92 dBc THD at 30 MHz
•
Wide Bandwidth: 1.4 GHz
•
Supply Voltages
– +5 V, ±5 V
•
Power Down Functionality (THS4275)
•
Evaluation Module Available
APPLICATIONS
•
High Linearity ADC Preamplifier
•
Wireless Communication Receivers
•
Differential to Single-Ended Conversion
•
DAC Output Buffer
•
Active Filtering
Low-Noise, Low-Distortion, Wideband Application Circuit
+5 V
50
Source
50
+
THS4271
V
49.9
I
_
-5 V
249
249
NOTE: Power supply decoupling capacitors not shown
THS4271
NC
1
8
IN−
2
7
IN+
3
6
V
4
5
S−
1
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.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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.
DGN-8
DGK-8
D-8
DRB-8
VOLTAGE FEEDBACK AMPLIFIER
Check for Samples:
THS4271 THS4275
DESCRIPTION
The THS4271 and THS4275 are low-noise, high slew
rate, unity gain stable voltage-feedback amplifiers
designed to run from supply voltages as low as 5 V
and as high as ±5 V. The THS4275 offers the same
performance as the THS4271 with the addition of a
power-down capability. The combination of low-noise,
high slew rate, wide bandwidth, low distortion, and
unity gain stability make the THS4271 and THS4275
high
performance
specifications.
Designers using the THS4271 are rewarded with
higher dynamic range over a wider frequency band
without the stability concerns of decompensated
amplifiers. The devices are available in SOIC, MSOP
with
PowerPAD™,
PowerPAD™ packages.
The THS4271 and THS4275 may have low-level
oscillation when the die temperature (also known as
the junction temperature) exceeds +60°C. For more
information, see
Prevent
Oscillation.
DEVICE
THS4211
THS4503
V
O
THS3202
NC
V
+
S
V
OUT
NC
THS4271
THS4275
SLOS397F – JULY 2002 – REVISED OCTOBER 2009
devices
across
multiple
and
leadless
MSOP
Maximum Die Temperature to
RELATED DEVICES
DESCRIPTION
1-GHz voltage-feedback amplifier
Wideband, fully-differential amplifier
Dual, wideband current feedback amplifier
HARMONIC AND INTERMODULATION
DISTORTION
vs
FREQUENCY
−40
Gain = 2
R
= 249
f
−50
R
= 150
L
V
= 2 V
O
PP
V
= 5 V
−60
S
IMD
3
200 kHz Tone Spacing
V
= 2 V
Envelope
−70
O
PP
−80
HD2
−90
HD3
−100
1
10
100
f − Frequency − MHz
Copyright © 2002–2009, Texas Instruments Incorporated
ac
with

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THS4271DGK Summary of contents

  • Page 1

    ... S− 1 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. PowerPAD is a trademark of Texas Instruments. 2 All other trademarks are the property of their respective owners. 3 PRODUCTION DATA information is current as of publication date ...

  • Page 2

    ... SLMA002 and SLMA004 for more information about utilizing the Product Folder Link(s): THS4271 THS4275 www.ti.com (1) (2) PLASTIC MSOP PACKAGE (DGK) MARKING THS4271DGK BEY THS4271DGKR THS4275DGK BJD THS4275DGKR UNIT 16.5 V ±V S 100 mA See Dissipation Ratings Table +150°C +125°C +60°C –65°C to +150°C ...

  • Page 3

    ... D, DRB, DGN, DGK THS4271 IN IN OUT internal connection Copyright © 2002–2009, Texas Instruments Incorporated PIN ASSIGNMENTS (TOP VIEW) REF IN- IN Product Folder Link(s): THS4271 THS4275 THS4271 THS4275 SLOS397F – JULY 2002 – REVISED OCTOBER 2009 MIN MAX UNIT ±2.5 ± ...

  • Page 4

    ... MΩ this data sheet. Copyright © 2002–2009, Texas Instruments Incorporated MIN/ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ ...

  • Page 5

    ... Turn-off time delay [t ] 50% of final supply current value (OFF) Input impedance MHz Output impedance (2) For detailed information on the power-down circuit, see the Copyright © 2002–2009, Texas Instruments Incorporated = ±5 V (continued) S TYP TEST CONDITIONS +25°C ±4 160 80 0.1 ± ...

  • Page 6

    ... MΩ pF 1.4/3.6 1.5/3.5 1.5/3.5 V 100 Ω of this data sheet. Copyright © 2002–2009, Texas Instruments Incorporated MIN/ TYP/ MAX Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ Typ ...

  • Page 7

    ... Turn-on time delay [t ] 50% of final value (ON) Turn-off time delay [t ] 50% of final value (OFF) Input impedance MHz Output impedance (2) For detail information on the power-down circuit, see the Copyright © 2002–2009, Texas Instruments Incorporated = 5 V (continued) S TYP TEST CONDITIONS +25° S– = –0 0 S– ...

  • Page 8

    ... Overdrive recovery Closed-loop output impedance vs Frequency Power-down quiescent current vs Supply voltage Power-down output impedance vs Frequency Turn-on and turn-off delay times 8 Submit Documentation Feedback TYPICAL CHARACTERISTICS Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com FIGURE 10, 11, 12, 13 ...

  • Page 9

    ... Closed-loop output impedance vs Frequency Power-down quiescent current vs Supply voltage Power-down output impedance vs Frequency Turn-on and turn-off delay times Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 THS4271 THS4275 SLOS397F – JULY 2002 – REVISED OCTOBER 2009 FIGURE ...

  • Page 10

    ... Frequency − MHz Figure 6. HARMONIC DISTORTION vs FREQUENCY −50 Gain = 249 − HD3 499 L −70 HD2 499 L HD3 150 L −80 HD2 150 L −90 −100 10 100 1 f − Frequency − MHz Figure 9. Copyright © 2002–2009, Texas Instruments Incorporated 1 G 100 100 ...

  • Page 11

    ... 200 kHz Tone Spacing − −70 − −90 −100 10 100 f − Frequency − MHz Figure 16. Copyright © 2002–2009, Texas Instruments Incorporated HARMONIC DISTORTION vs OUTPUT VOLTAGE SWING −50 Gain = 1 HD2 499 MHz −60 S HD3 150 L HD2 150 L −70 −80 − ...

  • Page 12

    ... SUPPLY VOLTAGE −40° 25° 85° 2.5 3 3.5 4 4.5 5 Supply Voltage − V ± S Figure 26. Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com SETTLING TIME 3 Rising Edge 2 1 Gain = − 499 249 MHz −1 Falling Edge −2 − ...

  • Page 13

    ... Time − s Figure 34. Copyright © 2002–2009, Texas Instruments Incorporated COMMON-MODE REJECTION RATIOS vs INPUT COMMON-MODE RANGE 100 −6 −4 − ...

  • Page 14

    ... R = 150 L −0 100 −0 −1 100 100 M f − Frequency − Hz Figure 41. HARMONIC DISTORTION DISTORTION vs FREQUENCY −50 Gain = − 150 −70 −80 HD3 HD2 −90 −100 2 − Frequency − MHz Figure 44. Copyright © 2002–2009, Texas Instruments Incorporated 1 G 100 ...

  • Page 15

    ... HD2 150 L −60 HD3 499 L −70 HD2 499 L −80 −90 −100 0 0.5 1 1.5 2 2.5 V − Output Voltage Swing − Figure 51. Copyright © 2002–2009, Texas Instruments Incorporated HARMONIC DISTORTION vs FREQUENCY −50 Gain = 249 f − 249 −70 −80 HD3 −90 HD2 −100 ...

  • Page 16

    ... Phase 20 120 10 140 0 160 −10 180 10 k 100 100 − Frequency − Hz Figure 61. Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com VOLTAGE AND CURRENT NOISE vs FREQUENCY 100 100 100 100 100 M f − Frequency − Hz Figure 56 ...

  • Page 17

    ... 249 f − 300 −1 − Time − ns Figure 69. Copyright © 2002–2009, Texas Instruments Incorporated REJECTION RATIOS vs CASE TEMPERATURE 120 PSRR+ 100 PSRR− CMMR −40−30−20−100 Case Temperature − C Figure 64. INPUT BIAS AND OFFSET CURRENT vs CASE TEMPERATURE 8 1 ...

  • Page 18

    ... IMPEDANCE vs FREQUENCY 1 M Gain = 150 −1 dBm 100 1 100 100 − Frequency − Hz Figure 73. Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com TURN-ON AND TURN-OFF TIME vs DELAY TIME 45 6.5 Input 0.5 20 − 0.5 Gain = −1 ...

  • Page 19

    ... V PowerPad™ MSOP THS4271DGN THS4271DGNR 5 V THS4275DGN THS4275DGNR Worst Case 10 V MSOP THS4271DGK THS4271DGKR 5 V THS4275DGK THS4275DGKR Worst Case 10 V Copyright © 2002–2009, Texas Instruments Incorporated APPLICATION INFORMATION The die temperature can be approximated with the following formula: Die Temperature = P ...

  • Page 20

    ... Figure 75. Wideband, Noninverting Product Folder Link(s): THS4271 THS4275 www.ti.com voltage-feedback operational Figure 75, the 49.9-Ω shunt resistor 100 pF 0 THS4271 O _ 499 R f 249 R g 0 100 pF −V S −5 V Gain Configuration Copyright © 2002–2009, Texas Instruments Incorporated ...

  • Page 21

    ... R be set equal to the required termination value and R adjusted to give the desired gain. However, care Copyright © 2002–2009, Texas Instruments Incorporated must be taken when dealing with low inverting gains, as the resulting feedback resistor value can present a ...

  • Page 22

    ... REF + 1.8 V for enable REF + 1 V for disable Note that in order to maintain these threshold levels, the reference pin can be any voltage between VS GND up to Vs/2 (midrail). Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com and Table 3 show examples and (REF ≤ ...

  • Page 23

    ... Copyright © 2002–2009, Texas Instruments Incorporated A 100-pF capacitor can be used across the supplies as well for extremely high-frequency return currents, but often is not required. DISABLE LEVEL (V) APPLICATION CIRCUITS ≤ ...

  • Page 24

    ... Poles Between 90 MHz and 100 MHz Product Folder Link(s): THS4271 THS4275 www.ti.com THS4271 + 3 100 IF+ 249 249 49.9 100 249 249 49.9 IF THS4271 and voltage-feedback architecture. 6.8 pF 249 249 5 V 61.9 _ 49.9 THS4271 + 33 pF −5 V Copyright © 2002–2009, Texas Instruments Incorporated RF (out ...

  • Page 25

    ... O i) i– space Copyright © 2002–2009, Texas Instruments Incorporated THEORY AND GUIDELINES Distortion Performance 83. With both The THS4271 performance into a 150-Ω load. Relative to alternative solutions, it provides exceptional performance into lighter loads, as well as exceptional performance on a termination single 5-V supply. Generally, until the fundamental ...

  • Page 26

    ... In this model, all noise terms are taken to be noise voltage or current density terms in either nV/√Hz or pA/√Hz. Product Folder Link(s): THS4271 THS4275 www.ti.com between open-loop, class-A closed-loop, class-AB amplifiers Equation 2 IMD 3 where 0.001 the peak P Figure 87 shows the amplifier Copyright © 2002–2009, Texas Instruments Incorporated and (2) (3) ...

  • Page 27

    ... When the amplifier open-loop output resistance is considered, this capacitive load introduces an Copyright © 2002–2009, Texas Instruments Incorporated additional pole in the signal path that can decrease the phase margin. When the primary considerations are frequency response flatness, pulse response ...

  • Page 28

    ... If the input impedance of the destination device is low, there is some signal attenuation due to the voltage divider formed by the series output into the terminating impedance. Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com Good ...

  • Page 29

    ... PowerPAD package, the following steps illustrate the recommended approach. space space space space Copyright © 2002–2009, Texas Instruments Incorporated PowerPAD PCB LAYOUT CONSIDERATIONS 1. Prepare the PCB with a top side etch pattern as shown in Figure leads as well as etch for the thermal pad. ...

  • Page 30

    ... Often maximum power 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. Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com A ...

  • Page 31

    ... M f − Frequency − Hz Figure 92. Effects of Unity Gain Frequency Response for DIfferential Packages Evaluation Fixtures, Spice Models, and Applications Support Texas Instruments is committed to providing its customers with the highest quality of applications support. To support this goal, evaluation boards have been developed for ...

  • Page 32

    ... In order to achieve the maximum performance of the device, PCB layout is very critical. Texas Instruments has developed an EVM for the evaluation of the THS4271 in a gain of 1. The EVM is shown in ...

  • Page 33

    ... Figure 96. THS4271/THS4275 EVM Board Layout (Top Layer) Figure 97. THS4271/THS4275 EVM Board Layout (Second Layer, Ground) Copyright © 2002–2009, Texas Instruments Incorporated Figure 98. THS4271/THS4275 EVM Board Layout (Third Layer, Power) Figure 99. THS4271/THS4275 EVM Board Layout (Bottom Layer) Product Folder Link(s): ...

  • Page 34

    ... Submit Documentation Feedback J4 Vout R7 J5 VS+ FB2 C3 C4 Figure 102. THS4271 Unity Gain EVM Board Layout (Second Layer, Ground) Figure 103. THS4271 Unity Gain EVM Board Layout (Third Layer, Power) Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com ...

  • Page 35

    ... A SPICE model for the THS4271 is available through either the Texas Instruments web site (www.ti.com one model on a disk from the Texas Instruments Product Information Center (1-800-548-6132). The PIC is also available for design assistance and detailed product information at this number. These models do a good ...

  • Page 36

    ... Maximum Die Temperature to Prevent Oscillation • Changed calculation relation to maximum die temperature .............................................................................. DISS • Updated Table 1 ................................................................................................................................................................. 36 Submit Documentation Feedback REVISION HISTORY = ±5 V) ................................................................................................... ..................................................................................................... S section ..................................................................................... Copyright © 2002–2009, Texas Instruments Incorporated Product Folder Link(s): THS4271 THS4275 www.ti.com Page (±5 V Electrical Electrical ...

  • Page 37

    ... PACKAGING INFORMATION (1) Orderable Device Status THS4271D ACTIVE THS4271DG4 ACTIVE THS4271DGK ACTIVE THS4271DGKG4 ACTIVE THS4271DGKR ACTIVE THS4271DGKRG4 ACTIVE THS4271DGN ACTIVE THS4271DGNG4 ACTIVE THS4271DGNR ACTIVE THS4271DGNRG4 ACTIVE THS4271DR ACTIVE THS4271DRBR ACTIVE THS4271DRBRG4 ACTIVE THS4271DRBT ACTIVE THS4271DRBTG4 ACTIVE THS4271DRG4 ACTIVE THS4275D ACTIVE THS4275DG4 ...

  • Page 38

    Orderable Device Status THS4275DGNG4 ACTIVE THS4275DRBR ACTIVE THS4275DRBRG4 ACTIVE THS4275DRBT ACTIVE THS4275DRBTG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be ...

  • Page 39

    TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing THS4271DR SOIC THS4271DRBR SON DRB THS4271DRBT SON DRB THS4275DRBR SON DRB THS4275DRBT SON DRB PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel Diameter Width (mm) W1 (mm) ...

  • Page 40

    Device Package Type THS4271DR SOIC THS4271DRBR SON THS4271DRBT SON THS4275DRBR SON THS4275DRBT SON PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2500 DRB 8 3000 DRB 8 250 DRB 8 3000 DRB ...

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  • Page 48

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...

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