THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 WIDEBAND, LOW-NOISE, LOW-DISTORTION, FULLY-DIFFERENTIAL AMPLIFIER Check for Samples: THS4513 FEATURES DESCRIPTION • • • • • • • • • • • • • • The THS4513 is a wideband, fully-differential op amp designed for 3.3-V to 5-V data acquisition systems. It has very low noise at 2.2 nV/√Hz, and extremely low harmonic distortion of –75 dBc HD2 and –86 dBc HD3 at 70 MHz with 2-VPP output, G = 0 dB, and 200-Ω load.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 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.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 ELECTRICAL CHARACTERISTICS: VS+ – VS– = 5 V Test conditions at VS+ = 2.5 V, VS– = –2.5 V, G = 0 dB, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) Test conditions at VS+ = 2.5 V, VS– = –2.5 V, G = 0 dB, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TEST LEVEL (1) INPUT Common-mode input range high 1.4 Common-mode input range low –1.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 ELECTRICAL CHARACTERISTICS: VS+ – VS– = 3 V Test conditions at VS+ = 1.5 V, VS– = –1.5 V, G = 0 dB, CM = open, VO = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. PARAMETER TEST CONDITIONS TYP UNIT G = 0 dB, VO = 100 mVPP 1.6 GHz G = 6 dB, VO = 100 mVPP 1.3 GHz G = 6 dB 2.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued) Test conditions at VS+ = 1.5 V, VS– = –1.5 V, G = 0 dB, CM = open, VO = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, TA = +25°C, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. PARAMETER TEST CONDITIONS TYP UNIT 0.45 V –0.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 DEVICE INFORMATION TOP VIEW RGT Package THS4513 VS− 16 15 14 13 NC 1 12 PD VIN− 2 11 VIN+ VOUT+ 3 10 VOUT− CM 4 9 5 6 7 CM 8 VS+ TERMINAL FUNCTIONS TERMINAL (RGT PACKAGE) NO.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted. SETTLING TIME 5 VOD = 2 Vpp RL = 200 W 4 3 2 Percent of Final Value VOD - Differential Output Voltage - V TRANSIENT RESPONSE 2 1.75 1.5 1.25 1 0.75 0.5 0.25 0 -0.25 -0.5 -0.75 -1 -1.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted. TURN-OFF TIME TURN-ON TIME 1.2 3 PD 2 0.4 1 PD 1.2 0.8 0 2 4 6 8 10 t − Time − µs 1 0 50 Figure 25. 100 150 t − Time − ns 200 Figure 26.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TYPICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) Test conditions at VS+ = +2.5 V, VS– = –2.5V, CM = open, VO = 2 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted. DIFFERENTIAL OUTPUT OFFSET VOLTAGE vs CM INPUT COMMON-MODE VOLTAGE OUTPUT COMMON-MODE OFFSET vs CM INPUT VOLTAGE 50 40 3.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V Test conditions at VS+ = +1.5 V, VS– = –1.5V, CM = open, VOD = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued) Test conditions at VS+ = +1.5 V, VS– = –1.5V, CM = open, VOD = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued) Test conditions at VS+ = +1.5 V, VS– = –1.5V, CM = open, VOD = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued) Test conditions at VS+ = +1.5 V, VS– = –1.5V, CM = open, VOD = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted. SETTLING TIME 5 0.75 4 Percent of Final Value - % VOD - Differential Output Voltage - V TRANSIENT RESPONSE 1 0.5 0.25 RL = 200 W VOD = 1 VPP 0 -0.25 -0.5 -0.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued) Test conditions at VS+ = +1.5 V, VS– = –1.5V, CM = open, VOD = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted. TURN-OFF TIME TURN-ON TIME 1.5 0.4 PD 1 0.2 0.5 0 2 4 6 8 10 12 PD 0.8 2 1.5 0.6 Output 0.4 1 0.2 0.5 0 250 0 0 0 2.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3 V (continued) Test conditions at VS+ = +1.5 V, VS– = –1.5V, CM = open, VOD = 1 VPP, RF = 348 Ω, RL = 200-Ω differential, G = 0 dB, singleended input, and input and output referenced to midsupply, unless otherwise noted.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 TEST CIRCUITS The THS4513 is tested with the following test circuits built on the evaluation module (EVM). For simplicity, power-supply decoupling is not shown—see Layout Recommendations in the Applications section for recommendations. Depending on the test conditions, component values are changed per the following tables, or as otherwise noted. The signal generators used are ac-coupled, 50-Ω sources and a 0.22-μF capacitor and 49.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com The 1-dB compression point is measured with a spectrum analyzer with 50-Ω double termination or 100-Ω termination; see Table 2. The input power is increased until the output is 1 dB lower than expected. The number reported in the table data is the power delivered to the spectrum analyzer input. Add 3 dB to refer to the amplifier output.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 APPLICATION INFORMATION Amplifier APPLICATIONS The following circuits show application information for the THS4513. For simplicity, power-supply decoupling capacitors are not shown in these diagrams. Please see the THS4513 EVM section for recommendations. For more detail on the use and operation of fully-differential op amps refer to the application report, Fully-Differential Amplifiers (SLOA054).
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com Setting the Output Common-Mode Voltage The output common-mode voltage is set by the voltage at the CM pin(s). The internal common-mode control circuit maintains the output common-mode voltage within 3-mV offset (typ) from the set voltage, when set within 0.5 V of midsupply, with less than 4mV differential offset voltage.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 VIC is the desired input common-mode voltage, VCM = CM, and RIN = RG+ RS || RT. To set to midsupply, make the value of RPU = RG+ RS || RT. Table 3 is a modification of Table 1 to add the proper values with RPU assuming a 50-Ω source impedance and setting the input and output common-mode voltage to midsupply. There are two drawbacks to this configuration. One is that it requires additional current from the power supply.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com THS4513 and ADS5500 Combined Performance The THS4513 is designed to be a high-performance drive amplifier for high-performance data converters like the ADS5500 14-bit 125-MSPS ADC. Figure 84 shows a circuit combining the two devices. The THS4513 amplifier circuit provides 10 dB of gain, converts the single-ended input to differential, and sets the proper input common-mode voltage to the ADS5500. The 100-Ω resistors and 2.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 Layout Recommendations It is recommended to follow the layout of the external components near the amplifier, ground plane construction, and power routing of the EVM as closely as possible. General guidelines are: 1. Signal routing should be direct and as short as possible into and out of the op amp circuit. 2. The feedback path should be short and direct; avoid vias. 3.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com PowerPAD PCB LAYOUT CONSIDERATIONS Although there are many ways to properly heatsink the PowerPAD package, the following steps illustrate the recommended approach. 0.144 0.049 0.012 Pin 1 0.0095 0.015 0.144 0.0195 0.0705 0.010 vias 0.032 0.030 0.0245 Top View Figure 88. PowerPAD PCB Etch and Via Pattern 1. Prepare the PCB with a top side etch pattern as shown in Figure 88.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 THS4513 EVM Figure 89 is the THS4513 EVAL1 EVM schematic; layers 1 through 4 of the PCB are shown Figure 91, and Table 4 is the bill of materials for the EVM as supplied from TI. GND VS− J4 VS+ J5 J6 VEE 0.1 µF TP1 C9 C10 0.1 µF VCC 10 µF C4 10 µF C15 R12 49.9 Ω 0.22 µF J2 12 2 3 VO+ − U1 11 + R4 340 Ω R2 56.2 Ω TP2 C14 0.1 µF VO− PwrPad 10 4 R7 86.6 Ω R8 15 13 14 16 VEE R6 J3 T1 R11 69.
THS4513 SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 www.ti.com Table 4. THS4513 EVAL1 EVM Bill of Materials ITEM 32 DESCRIPTION SMD SIZE REFERENCE DESIGNATOR PCB QTY MANUFACTURER PART NUMBER 1 CAP, 10.0 μF, Ceramic, X5R, 6.3 V 0805 C3, C4, C5, C6 4 (AVX) 08056D106KAT2A 2 CAP, 0.1 μF, Ceramic, X5R, 10 V 0402 C9, C10, C11, C12, C13, C14 6 (AVX) 0402ZD104KAT2A 3 CAP, 0.22 μF, Ceramic, X5R, 6.
THS4513 www.ti.com SLOS472E – AUGUST 2005 – REVISED JANUARY 2013 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (September 2009) to Revision E • Page Changed RG and RIT values in Table 1 ..............................................................................................................................
PACKAGE OPTION ADDENDUM www.ti.
PACKAGE OPTION ADDENDUM www.ti.
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 THS4513RGTR QFN RGT 16 3000 330.0 12.4 3.3 3.3 1.1 8.0 12.0 Q2 THS4513RGTT QFN RGT 16 250 180.0 12.4 3.3 3.3 1.1 8.0 12.
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) THS4513RGTR QFN RGT 16 3000 367.0 367.0 35.0 THS4513RGTT QFN RGT 16 250 210.0 185.0 35.
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