IC OPAMP PROG GAIN 70MHZ 28TSSOP

 

THS7002CPWPRG4

Manufacturer Part NumberTHS7002CPWPRG4
DescriptionIC OPAMP PROG GAIN 70MHZ 28TSSOP
ManufacturerTexas Instruments
THS7002CPWPRG4 datasheets

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Specifications of THS7002CPWPRG4

Amplifier TypeProgrammable GainNumber Of Circuits2
Slew Rate85 V/µsGain Bandwidth Product70MHz
-3db Bandwidth100MHzCurrent - Input Bias2.5µA
Voltage - Input Offset1000µVCurrent - Supply7mA
Current - Output / Channel95mAVoltage - Supply, Single/dual (±)9 V ~ 32 V, ±4.5 V ~ 16 V
Operating Temperature0°C ~ 70°CMounting TypeSurface Mount
Package / Case28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOPNumber Of Channels2
Voltage Gain Db89 dBCommon Mode Rejection Ratio (min)80 dB
Input Offset Voltage5 mVOperating Supply Voltage33 V
Maximum Operating Temperature+ 70 CMounting StyleSMD/SMT
Maximum Dual Supply Voltage+/- 16 VMinimum Operating Temperature0 C
For Use With296-10078 - EVAL MOD FOR THS7002Lead Free Status / RoHS StatusLead free / RoHS Compliant
Output Type-  
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D
Separate Low Noise Preamp and PGA
Stages
D
Shutdown Control
D
Preamp Features
− Low Voltage Noise . . . 1.7 nV/√Hz
− Accessible Output Pin for External
Filtering
− Voltage Feedback, G
= −1, 2
min
− 100 MHz Bandwidth (−3 dB)
description
The THS7001 (single) and THS7002 (dual) are high-speed programmable-gain amplifiers, ideal for applications
where load impedance can often vary. Each channel on this device consists of a separate low-noise input
preamp and a programmable gain amplifier (PGA). The preamp is a voltage-feedback amplifier offering a low
1.7-nV/√Hz voltage noise with a 100-MHz (−3 dB) bandwidth. The output pin of the preamp is accessible so that
filters can be easily added to the amplifier.
The 3-bit digitally-controlled PGA provides a −22-dB to 20-dB attenuation/gain range with a 6-dB step
resolution. In addition, the PGA provides both high and low output clamp protection to prevent the output signal
from swinging outside the common-mode input range of an analog-to-digital converter. The PGA provides a
wide 70-MHz (−3 dB) bandwidth, which remains relatively constant over the entire gain/attenuation range.
Independent shutdown control is also provided for power conservation and multiplexing. These devices operate
over a wide ±4.5-V to ±16-V supply voltage range.
PREAMP V CC+
_
PREAMP IN−
Preamp
+
PREAMP IN+
PREAMP V CC−
SHDN
CAUTION: The THS7001 and THS7002 provides ESD protection circuitry. However, permanent damage can still occur if this
device is subjected to high-energy electrostatic discharges. Proper ESD precautions are recommended to avoid any performance
degradation or loss of functionality.
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 Incorporated.
SLOS214C − OCTOBER 1998 − REVISED MARCH 2007
D
PGA Features
− Digitally Programmable Gain
− −22 dB to 20 dB Gain/Attenuation Range
− 6 dB Step Resolution
− Output Clamp Protection
− 70 MHz Bandwidth (−3 dB)
− 175 V/µs Slew Rate
D
Wide Supply Range ±4.5 V to ±16 V
D
PowerPAD Package for Enhanced
Thermal Performance
PREAMP
OUT
PGA IN−
G 0
G 1
G 2
_
+
PGA REF
PGA
V CC+
Figure 1. THS7001 Block Diagram
•
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
CLAMP+ (V H )
PGA OUT
CLAMP− (V L )
PGA
GND
V CC−
Copyright  1999, Texas Instruments Incorporated
1

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THS7002CPWPRG4 Summary of contents

  • Page 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 Incorporated. SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 ...

  • Page 2

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 V REF − Pre-AMP OUT −V Pre-Amp IN +V Pre-Amp IN V Pre-Amp CC− V Pre-Amp CC+ Spare/NC Spare/NC GND-A PGA-A REF PGA-A IN− PREAMP OUT A PREAMP-A IN− PREAMP-A ...

  • Page 3

    PREAMP OUT A PREAMP V CC+ _ PREAMP A IN− Preamp + PREAMP A IN+ SHDN−A SHDN−B PREAMP B IN+ + Preamp _ PREAMP B IN− PREAMP V CC− PREAMP OUT B input preamp To achieve the minimum ...

  • Page 4

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 output clamping Output clamping for both upper (V for the positive output clamp and one for the negative output clamp for both channels. shutdown control The SHDN terminals allow for powering down ...

  • Page 5

    PARAMETER V CC Supply voltage operating range Maximum output voltage swing Maximum output voltage swing V IO Input offset voltage V IO Input offset voltage Input offset voltage drift ...

  • Page 6

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 preamp operating characteristics PARAMETER SR SR Slew rate (see Note 4) Slew rate (see Note 4) Settling time to 0.1% Settling time to 0. ...

  • Page 7

    PGA electrical characteristics, T PARAMETER V CC Supply voltage range Maximum output voltage swing Maximum output voltage swing Input offset voltage Input offset voltage Input offset voltage drift Reference input voltage range ...

  • Page 8

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 PGA electrical characteristics, T (continued) digital gain characteristics PARAMETER V IH High-level input voltage V IL Low-level input voltage I IH High-level input current I IL Low-level input current (sink current) Gain-change ...

  • Page 9

    TYPICAL CHARACTERISTICS INPUT OFFSET VOLTAGE vs FREE-AIR TEMPERATURE 3.5 3 PGA ±5 V 2.5 2 PGA ±15 V 1.5 Preamp ±15 V Preamp ±5 V 0.5 0 ...

  • Page 10

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 PREAMP OPEN LOOP GAIN AND PHASE RESPONSE vs FREQUENCY 100 Gain 80 60 Phase ±15 V and ± 250 Ω −20 ...

  • Page 11

    PREAMP LARGE AND SMALL SIGNAL FREQUENCY RESPONSE ± 150 Ω V O(PP O(PP O(PP) = 0.4 V −6 ...

  • Page 12

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 THS7002 PREAMP CHANNEL-TO-CHANNEL CROSSTALK − ±15 V & ± O(PP) = 1.3 V − kΩ 499 Ω ...

  • Page 13

    PGA HARMONIC DISTORTION vs FREQUENCY − kΩ =±5 V Gain=+8 dB −40 2nd Harmonic V O(PP − =± =±15 V −60 3rd Harmonic 2nd Harmonic −70 ...

  • Page 14

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 PGA SHUTDOWN RESPONSE Gain = 1,0,1 V SHDN (5 V/Div) (+8 dB 500 Ω V OUT (500 mV/Div ± ± ...

  • Page 15

    Each section of the THS7001 and THS7002 consists of a pair of high speed operational amplifiers configured in a voltage feedback architecture. They are built using a 30-V, dielectrically isolated, complementary bipolar process with NPN and PNP ...

  • Page 16

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 noise calculations and noise figure (continued The total equivalent input noise density ( Where Boltzmann’s ...

  • Page 17

    ni1 V in Figure 53. Simplified Composite Amplifier System The noise due to amplifier 1 (A1) is the same as derived in equations 1 and 2. The composite system noise ...

  • Page 18

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 noise calculations and noise figure (continued) Because the dominant noise components are generally the source resistance and the internal amplifier noise voltage, we can approximate noise figure as 10log ...

  • Page 19

    The next thing that helps to maintain a smooth frequency response is to keep the feedback resistor (R the gain resistor (R ) values fairly low. These two resistors are effectively in parallel ...

  • Page 20

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 PGA gain control (continued) One aspect of the THS7001 and THS7002 PGA signal inputs is that there are internal variable resistors (R and R ), which set the gain. The resistance of ...

  • Page 21

    Typically, the output of the PGA will directly drive an analog-to-digital converter (ADC). Because of the limited linear input range and saturation characteristics of most ADCs, the PGA’s outputs incorporate a voltage clamp. Unlike a lot of clamping ...

  • Page 22

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 output clamping (continued) OUTPUT VOLTAGE vs CLAMP VOLTAGE ( =±5 V & ± Gain=+ =5.1 k Ω ...

  • Page 23

    There are two shutdown pins which control the shutdown for each half of the THS7002 and one shutdown pin for the THS7001. When the shutdown pins signals are low, the THS7001 and THS7002 is active. But, when a ...

  • Page 24

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 driving a capacitive load (continued) 499 Ω Input offset voltage The output offset voltage the sum of the input offset voltage (V OO the corresponding gains. The following schematic ...

  • Page 25

    If even more attenuation is needed, a multiple-pole filter is required. The Sallen-Key filter can be used for this task. For best results, the THS7001 and THS7002 preamplifier should have a bandwidth that ...

  • Page 26

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 ADSL (continued THS6012 0.1 µF Driver kΩ 1 kΩ 0.1 µF − 0.1 µF THS6012 Driver I− _ ...

  • Page 27

    ADSL (continued) Typically, the outputs of the preamplifiers are carried into a CODEC, which incorporates an analog-to-digital converter (ADC). The problem with this setup is that it only uses fixed gain elements. But, when the client is close to the ...

  • Page 28

    SLOS214C − OCTOBER 1998 − REVISED MARCH 2007 circuit layout considerations (continued) D Short trace runs/compact part placements—Optimum high-frequency performance is achieved when stray series inductance has been minimized. To realize this, the circuit layout should be made as compact ...

  • Page 29

    PowerPAD design considerations Although there are many ways to properly heatsink this device, the following steps illustrate the recommended approach. Figure 68. PowerPAD PCB Etch and Via Pattern 1. Prepare the PCB with a top side etch pattern as ...

  • Page 30

    ... Figure 69. Maximum Power Dissipation vs Free-Air Temperature More complete details of the PowerPAD installation process and thermal management techniques can be found in the Texas Instruments technical brief, PowerPAD Thermally Enhanced Package. This document can be found at the TI web site (www.ti.com) by searching on the key word PowerPAD. The document can also be ordered through your local TI sales office ...

  • Page 31

    ... THS7001IPWP ACTIVE HTSSOP THS7001IPWPG4 ACTIVE HTSSOP THS7002CPWP ACTIVE HTSSOP THS7002CPWPG4 ACTIVE HTSSOP THS7002CPWPR ACTIVE HTSSOP THS7002CPWPRG4 ACTIVE HTSSOP THS7002IPWP ACTIVE HTSSOP THS7002IPWPG4 ACTIVE HTSSOP THS7002IPWPRG4 ACTIVE HTSSOP (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. ...

  • Page 32

    TBD: The Pb-Free/Green conversion plan has not been defined. 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% ...

  • Page 33

    TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing THS7001CPWPR HTSSOP PWP THS7002CPWPR HTSSOP PWP PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 20 2000 330.0 16.4 6.95 28 ...

  • Page 34

    Device Package Type THS7001CPWPR HTSSOP THS7002CPWPR HTSSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) PWP 20 2000 PWP 28 2000 Pack Materials-Page 2 23-Jul-2010 Width (mm) Height (mm) 346.0 346.0 33.0 346.0 346.0 ...

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  • Page 40

    ... 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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