Amplifier and Data Converter Selection Guide

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40 Amplifiers ➔ Audio Amplifiers PurePath Digital PWM Processors Sampling Dynamic Audio THD+N (%, System Device Channels Frequency Range Controls Performance) Bits Package Price * TAS5010 2 32 to 192 96 Modulator Only < 0.08 16, 20, 24 QFP $3.00 TAS5012 2 32 to 192 102 Modulator Only < 0.08 16, 20, 24 QFP $3.50 TAS5504A 4 32 to 192 102 Volume, Audio Filters < 0.1 16, 20, 24 QFP $4.30 TAS5508B 8 32 to 192 100 Volume, Audio Filters < 0.1 16, 20, 24 QFP $5.00 TAS5086 6 32 to 192 100 Volume, Bass Mgmt., < 0.1 16, 20, 24 TSSOP $1.60 Audio Filters TAS5518 8 32 to 192 110 Volume, Bass Mgmt.
Amplifiers 41 TI power amplifiers solve tough high-voltage and high-current design problems in applications requiring up to 80V and 10A output current. Most are internally protected against thermal and current overload, and some offer user-defined current limiting. The unity-gain buffer amplifier series provides slew rates up to 3600V/µs and output current to 250mA. Design Considerations Power dissipation—determines the appropriate package type as well as the size of the required heat sink. Always stay within the specified operating range to maintain reliability of the power amps. Some power amps are internally protected against overheating and overcurrent. The thermallyenhanced PowerPAD package provides greater design flexibility and increased thermal efficiency in a standard size IC package. PowerPAD provides an extremely low thermal resistance path to a ground plane or special heatsink structure. Full-power bandwidth—or large-signal bandwidth, high FPBW is achieved by using power amps with high slew rate. Current limit—be aware of the specified operating area, which defines the relationship between supply voltage and current output. Both power supply and load must be appropriately selected to avoid thermal and current limits. Thermal shutdown—the incorporation of internal thermal sensing and shut-off will automatically shut-off the amplifier should the internal temperature reach a specified value. Power Amplifiers and Buffers Technical Information Power Amps Unlike other designs using a power resistor in series with the output current path, the OPA547, OPA548 and OPA549 power amps sense current internally. This allows the current limit to be adjusted from near 0A to the upper limit with a control signal or a low-power resistor. This feature is included in the OPA56x series. The new 2A OPA567 comes in the tiny QFN package. Buffer The BUF634 can be used inside the feedback loop to increase output current, eliminate thermal feedback and improve capacitive load drive. When connected inside the feedback loop, the offset voltage and other errors are corrected by the feedback of the op amp. ➔ Function-Integrated, Rail-to-Rail I/O Power Amplifier OPA569 Get samples and datasheets at: www.ti.com/sc/device/OPA569 Key Features • High output drive: 2A • Rail-to-rail input/output • Single-supply operation: 2.7V to 5.5V • Thermal protection, temperature warning flag • Current limit, current monitor pin • Shutdown with output disable • Packaging: SO-20 Applications • Laser diode pump driver • Valve, actuator driver • Synchro, servo driver • Transducer excitation • General linear power booster for op amps • Paralleling option for higher current applications The OPA569 integrates a single-supply, high-current operational amplifier design with internally integrated thermal and current monitoring functions. The OPA569 output can swing within 150mV of supply rails while driving 2A of continuous output current, and maintains excellent performance under heavy loading. Integrated features include a unique output topology designed for parallel output, enabling the two OPA569 devices to drive up to 4A of current on a single supply. Additional monitoring features include current monitor pin and resistor-set current limit, as well as an over temperature threshold pin. The OPA569 is specified from –40°C to +85°C and is packaged in a small SO-20 PowerPAD package. –In +In 12,13 5 6 17, 18 V+ V– Thermal Flag (1) 7 4 OPA569 3 Current Limit Set R SET Current Limit Flag 8 2 14, 15 9 19 Enable I = I O /475 I MONITOR Parallel Out 1 V O Parallel Out 2 V+ V IN 12, Parallel Out 1 13 5 2 14, OPA569 15 6 (A1) 9 Parallel Out 2 17, 18 V– V+ 12, Parallel Out 1 13 5 6 2 OPA569 (A2) 14, 15 9 17, 18 Parallel Out 2 V– R L OPA569 functional block diagram and parallel application. Texas Instruments 3Q 2006 Amplifier and Data Converter Selection Guide
Page 1 and 2: Amplifier and Data Converter Select
Page 7 and 8: Amplifiers 7 Technology Primer Unde
Page 9 and 10: Amplifiers Precision Operational Am
Page 11 and 12: Amplifiers 11 Low-Noise Operational
Page 13 and 14: Amplifiers 13 Precision Operational
Page 15 and 16: Wideband, Low-Noise, Low-Distortion
Page 17 and 18: Amplifiers High-Speed Amplifiers 17
Page 19 and 20: Amplifiers 19 Video amplifiers—ca
Page 21 and 22: Video Amplifiers (sorted by ascendi
Page 23 and 24: Low-Power Comparators with Integrat
Page 25 and 26: Amplifiers Difference Amplifiers 25
Page 27 and 28: Amplifiers 27 Current shunt monitor
Page 29 and 30: The instrumentation amplifier (IA)
Page 31 and 32: Single-Supply Instrumentation Ampli
Page 33 and 34: Programmable gain instrumentation a
Page 35 and 36: 8-Channel Variable Gain Amplifier V
Page 37 and 38: Amplifiers Audio Amplifiers 37 ➔
Page 39: Amplifiers Audio Power Amplifiers 3
Page 43 and 44: Amplifiers 43 TI’s pulse width mo
Page 45 and 46: Amplifiers 45 Industrial Analog Vol
Page 47 and 48: Amplifiers Integrating Amplifiers 4
Page 49 and 50: Amplifiers 49 Data acquisition syst
Page 51 and 52: ADCs by Architecture 51 Delta-sigma
Page 53 and 54: 16-Bit, 10MSPS, Very Wide Bandwidth
Page 55 and 56: ADCs by Architecture Intelligent AD
Page 57 and 58: ADCs by Architecture 57 Successive-
Page 59 and 60: ADCs by Architecture 59 18-Bit, 1MS
Page 61 and 62: ADCs by Architecture SAR ADCs (Cont
Page 63 and 64: ADCs by Architecture 63 Analog-to-d
Page 65 and 66: 14-Bit, 170MSPS/190MSPS ADCs with L
Page 67 and 68: ADCs by Architecture 67 Pipeline AD
Page 69 and 70: 16-Bit, Ultra-Low Power, Voltage-Ou
Page 71 and 72: DACs by Architecture 71 High-Precis
Page 73 and 74: DACs by Architecture 73 High-Precis
Page 75 and 76: Low-Noise, 16-Bit, 500MSPS Dual DAC
Page 77 and 78: 1-Bit, 10MHz, 2nd-Order, Delta-Sigm
Page 79 and 80: Analog Monitoring and Control 79 Th
Page 81 and 82: 7ppm/°C Precision Series Voltage R
Page 83 and 84: World’s Smallest Digital Temperat
Page 85 and 86: High Reliability Products 85 The Te
Page 87 and 88: Quick Reference Selection Table 87
Page 89 and 90: Quick Reference Selection Table 89
Page 91 and 92:
Quick Reference Selection Table 91
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Quick Reference Audio Selection Tab
Page 101 and 102:
Design and Evaluation Tools 101 SPI
Page 103 and 104:
Design and Evaluation Tools 103 Sof
Page 105 and 106:
Design and Evaluation Tools Data Co
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Device Index 111 ➔ ACF2101 ......
Page 113 and 114:
Device Index 113 ➔ PCM1800 ......
Page 115 and 116:
TI Worldwide Technical Support Inte
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Amplifier and Data Converter Selection Guide

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