TH S THS4521 THS4522 THS4524 452 1 TH TH S4 S4 524 522 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER Check for Samples: THS4521, THS4522, THS4524 FEATURES APPLICATIONS • • • • • • • • • • • 1 23 • • • • • • Fully Differential Architecture Bandwidth: 145 MHz Slew Rate: 490 V/μs HD2: –133 dBc at 10 kHz (1 VRMS, RL = 1 kΩ) HD3: –140 dBc at 10 kHz (1 VRMS, RL = 1 kΩ) Input Voltage Noise: 4.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 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.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ – VS– = 3.3 V At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ – VS– = 3.3 V (continued) At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. THS4521, THS4522, THS4524 PARAMETER TYP MAX UNIT TEST LEVEL (1) TA = +25°C –0.2 –0.1 V A TA = –40°C to +85°C –0.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ – VS– = 5 V At VS+ = +5 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RF = 1 kΩ, RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, input and output referenced to midsupply, unless otherwise noted.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS: VS+ – VS– = 5 V (continued) At VS+ = +5 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RF = 1 kΩ, RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, input and output referenced to midsupply, unless otherwise noted.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com DEVICE INFORMATION THS4521 SOIC-8, MSOP-8 (D, DGK PACKAGES) (TOP VIEW) VIN- 1 8 VIN+ VOCM 2 7 PD VS+ 3 6 VS- VOUT+ 4 5 VOUT- THS4522 TSSOP-16 (PW PACKAGE) (TOP VIEW) PD1 1 16 VS- VIN1+ 2 15 VOUT1- VIN1- 3 14 VOUT1+ VOCM1 4 13 VS1+ PD2 5 12 VS- VIN2+ 6 11 VOUT2- VIN2- 7 10 VOUT2+ VOCM2 8 9 VS2+ TERMINAL FUNCTIONS: THS4521 SOIC-8, MSOP-8 PIN NO.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TERMINAL FUNCTIONS: THS4522 (continued) TSSOP-16 PIN NO. NAME 16 VS– DESCRIPTION Negative power-supply input. Note that VS– is tied together on multi-channel devices.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TERMINAL FUNCTIONS: THS4524 TSSOP-38 PIN NO. NAME DESCRIPTION 1 PD 1 Power down 1. PD = logic low puts channel into low-power mode. PD = logic high or open for normal operation. 2 VIN1+ Noninverting amplifier 1 input 3 VIN1– Inverting amplifier 1 input 4 VOCM1 Common-mode voltage input 1 5 VS– Negative power-supply input. Note that VS– is tied together on multi-channel devices. 6 PD 2 Power down 2.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS Table of Graphs: VS+ – VS– = 3.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3.3 V At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3.3 V (continued) At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. HARMONIC DISTORTION vs VOUT AT 1 MHZ HARMONIC DISTORTION vs FREQUENCY Harmonic Distortion (dBc) -50 VS+ = 3.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3.3 V (continued) At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. SINGLE-ENDED OUTPUT VOLTAGE SWING vs LOAD RESISTANCE 3.5 100 Differential Output Impedance (W) Linear Voltage Range VOCM = 1.65 V 3.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3.3 V (continued) At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. TURN-ON TIME 3.0 2.0 2.5 1.5 2.0 1.0 1.5 VOUT Diff PD 1.0 Differential VOUT (V) 3.0 2.5 40 60 80 100 120 1.2 1.0 0.8 0.6 VOUT Diff PD 0.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: VS+ – VS– = 3.3 V (continued) At VS+ = +3.3 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. VOCM INPUT IMPEDANCE vs FREQUENCY VOCM LARGE-SIGNAL PULSE RESPONSE 100 k 2.3 VOCM Input Impedance (W) VOUT Common-Mode Voltage (V) 2.5 2.1 1.9 1.7 1.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: 5 V At VS+ = +5 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RF = 1 kΩ, RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: 5 V (continued) At VS+ = +5 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RF = 1 kΩ, RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. HARMONIC DISTORTION vs VOUT AT 1 MHZ HARMONIC DISTORTION vs FREQUENCY VS+ = 5 V G = 1 V/V RF = 1 kW RL = 1 kW VOUT = 2.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: 5 V (continued) At VS+ = +5 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RF = 1 kΩ, RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. SINGLE-ENDED OUTPUT VOLTAGE SWING vs DIFFERENTIAL LOAD RESISTANCE 5.0 100 Differential Output Impedance (W) Linear Voltage Range VOCM = 2.5 V 4.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: 5 V (continued) At VS+ = +5 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RF = 1 kΩ, RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. TURN-ON TIME 3.0 2.0 2.5 1.5 2.0 1.0 1.5 1.0 Differential VOUT (V) 3.0 2.5 0 0 20 40 60 80 100 120 140 160 1.4 1.0 1.5 0.8 0.6 1.0 0 0.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS: 5 V (continued) At VS+ = +5 V, VS– = 0 V, VOCM = open, VOUT = 2 VPP (differential), RF = 1 kΩ, RL = 1 kΩ differential, G = 1 V/V, single-ended input, differential output, and input and output referenced to midsupply, unless otherwise noted. VOCM INPUT IMPEDANCE vs FREQUENCY VOCM LARGE-SIGNAL PULSE RESPONSE 100 k 3.3 VOCM Input Impedance (W) VOUT Common-Mode Voltage (V) 3.5 3.1 2.9 2.7 2.5 2.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TEST CIRCUITS Overview The THS4521, THS4522, and THS4524 family is tested with the test circuits shown in this section; all circuits are built using the available THS4521 evaluation module (EVM). For simplicity, power-supply decoupling is not shown; see the layout in the Applications section for recommendations.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Distortion The circuit shown in Figure 54 is used to measure harmonic and intermodulation distortion of the amplifier. An HP signal generator is used as the signal source and the output is measured with a Rhode and Schwarz spectrum analyzer. The output impedance of the HP signal generator is ac-coupled and is 50 Ω. RIT and RG are chosen to impedance match to 50 Ω and maintain the proper gain.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Common-Mode and Power-Supply Rejection VOCM Input The circuit shown in Figure 56 is used to measure the CMRR. The signal from the network analyzer is applied common-mode to the input. Figure 57 is used to measure the PSRR of VS+ and VS–. The power supply under test is applied to the network analyzer dc offset input.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com APPLICATION INFORMATION The following circuits show application information for the THS4521, THS4522, and THS4524 family. For simplicity, power-supply decoupling capacitors are not shown in these diagrams; see the EVM and Layout Recommendations section for suggested guidelines.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Single-Supply Operation Figure 62 represents the VOCM input. The internal VOCM circuit has typically 23 MHz of –3 dB bandwidth, which is required for best performance, but it is intended to be a dc bias input pin. A 0.22-μF bypass capacitor is recommended on this pin to reduce noise.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Low-Power Applications and the Effects of Resistor Values on Bandwidth Frequency Response Variation due to Package Options For low-power operation, it may be necessary to increase the gain setting resistors values to limit current consumption and not load the source.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Driving Capacitive Loads FREQUENCY RESPONSE vs CLOAD 5 The THS4521, THS4522, and THS4524 family is designed for a nominal capacitive load of 1 pF on each output to ground. When driving capacitive loads greater than 1 pF, it is recommended to use small resistors (RO) in series with the output, placed as close to the device as possible.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com TOTAL HARMONIC DISTORTION + NOISE THS4521 Measured on AP Analyzer 10-kHz OUTPUT SPECTRUM THS4521 on AP Analyzer Magnitude (dBv) Note that the harmonic distortion performance is very close to the same with and without the device meaning the THS4521 performance is actually much better than can be directly measured by this meathod.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Audio On/Off Pop Performance space The THS4521 was tested to show on and off pop performance by connecting a speaker between the differential outputs and switching the power supply on and off, and also by using the PD function of the THS4521. Testing was done with and without tones. During these tests, no audible pop could be heard.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Audio ADC Driver Performance: THS4521 and PCM4204 Combined Performance To show achievable performance with a high-performance audio ADC, the THS4521 is tested as the drive amplifier for the PCM4204. The PCM4204 is a high-performance, four-channel ADC designed for professional and broadcast audio applications.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com R33 270 W TP4 GND C21 1 nF + +5 V C29 +15 V 10 mF C73 100 pF C41 0.01 mF R23 1 kW Audio Inputs R41 40.2 W R13 0W C79 2.7 nF THS4521 R24 1 kW C83 0.1 mF R42 40.2 W PCM4204 Inputs R14 0W C74 100 pF GND +15 V R27 1 kW + C42 0.01 mF C30 10 mF C22 1 nF R34 270 W Figure 78. THS4521 and PCM4204 Test Circuit Table 4.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Figure 79 shows the THS4521 and PCM4204 THD+N versus frequency with no weighting at higher gains. THS4521 and PCM4204 THD+N vs FREQUENCY (No Weighting, at Higher Gains) -95 -97 -99 G=5 THD+N (dB) -101 -103 G=2 -105 G=1 -107 -109 -111 -113 -115 0 100 1k 10 k 20 k Frequency (Hz) Figure 79.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com ADC Driver Performance: THS4521 and ADS1278 Combined Performance modes from 10 kSPS to 128 kSPS to enable the user to fine-tune performance and power for specific application needs. The circuit shown in Figure 81 was used to test the performance. Data were taken using the High-Resolution mode (52 kSPS) of the ADS1278 with input frequencies at 1 kHz and 10 kHz and signal levels 1/2 dB below full-scale (–0.5 dBFS).
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com ADC Driver Performance: THS4521 and ADS8321 Combined Performance Data were taken using the ADS8321 at 100 kSPS with input frequencies of 2 kHz and 10 kHz and signal levels that were -0.5 dBFS. FFT plots that illustrate the spectral performance are given in Figure 85 and Figure 86. Tabulated ac analysis results are listed in Table 7 and compared to the ADS8321 data sheet typical performance.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com EVM AND LAYOUT RECOMMENDATIONS Figure 87 shows the THS4521EVM schematic. PCB layers 1 through 4 are shown in Figure 88; Table 8 lists the bill of materials for the THS4521EVM as supplied from TI. It is recommended to follow the layout of the external components near to the amplifier, ground plane construction, and power routing as closely as possible. Follow these general guidelines: 1.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Figure 88.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Table 8. THS4521EVM Parts List ITEM DESCRIPTION SMD SIZE REFERENCE DESIGNATOR QTY 1 Capacitor, 10.0 μF, ceramic, X5R, 6.3 V 0805 C7, C8, C9, C10 4 (AVX) 08056D106KAT2A 2 Capacitor, 0.1 μF, ceramic, X7R, 16 V 0603 C3, C5, C11, C12 4 (AVX) 0603YC104KAT2A 3 Capacitor, 0.
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision E (December 2010) to Revision F Page • Changed Input Offset Current values in 3.3 V Electrical Characteristics ............................................................................. 3 • Changed Input Offset Current Drift values in 3.3 V Electrical Characteristics ...............
THS4521 THS4522 THS4524 SBOS458F – DECEMBER 2008 – REVISED SEPTEMBER 2011 www.ti.com Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use.
PACKAGE OPTION ADDENDUM www.ti.
PACKAGE OPTION ADDENDUM www.ti.com (4) 18-Oct-2013 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing THS4521IDGKR VSSOP DGK 8 THS4521IDGKT VSSOP DGK THS4521IDR SOIC D THS4522IPWR TSSOP PW SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) THS4521IDGKR VSSOP DGK 8 2500 367.0 367.0 35.0 THS4521IDGKT VSSOP DGK 8 250 210.0 185.0 35.0 THS4521IDR SOIC D 8 2500 367.0 367.0 35.0 THS4522IPWR TSSOP PW 16 2000 367.0 367.0 35.
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.