Amplifier and Data Converter Selection Guide (Rev. B

56 ADCs by Architecture➔Wide Bandwidth ∆Σ ADCsTI’s wide bandwidth Delta-Sigma (∆Σ) ADCsare capable of very high resolution and arecapable of converting signals over a very widerange of frequencies from DC to severalmegahertz. Systems using these ADCs benefitfrom high speed, precision performance, andwide bandwidth (DC to 5MHz).These ADCs employ a multi-stage propriatarymodulatorarchitecture, which offer the advantageof inherent stability, and higher SQNRwith lower oversampling ratio (OSR).Furthermore, these high-speed, ∆Σ convertersare highly resistant to system clock jitter. Theaction of oversampling effectively averages thejitter, reducing the impact on noise.The combination of speed and precisionenable wide bandwidth signal processingapplications for advanced scientific instrumentationfor biomedical, bench test and measure,and communications applications.16-Bit, 10MSPS, Very Wide Bandwidth ADCADS1610Get samples, datasheets, evaluation modules and app reports at: www.ti.com/sc/device/ADS1610Key Features• Output data rate: 10MSPS• Signal bandwidth: 4.9MHz• SNR: 86dBFS• THD: –94dB• SFDR: 95dB• SYNC pin for simultaneous sampling withmultiple ADS1610s• Group delay: 3µs• Pin-compatible with ADS1605(5MSPS ADC)• Packaging: TQFP-64Applications• Scientific instruments• Test equipment• Communications• Wide-band signal analysisThe ADS1610 is a 10MSPS, high-precision ∆Σ ADC operating from a +5V analog and a +3Vdigital supply. Featuring an advanced multi-stage analog modulator combined with on-chipdigital decimation filter, the ADS1610 achieves 86dBFS SNR at a 4.9MHz signal bandwidth.Output data is supplied over a parallel interface and easily connects to TMS320 DSPs. Powerdissipation can be adjusted with an external resistor, allowing for reduction at lower operatingspeeds.AINPAINNAVDDADS1610VREFP VREFN VMID RBIAS VCAPModulatorAGNDADS1610 functional block diagram.Bias CircuitsDigitalFilterDVDDParallelInterfaceDGNDPDSYNCCLKCS2X MODERDDRDYOTRDOUT[15:0]Delta-Sigma (∆Σ) ADCs Selection GuideSample Number of SignalRes. Rate Input Bandwidth SNR THD PowerDevice (Bits) (kSPS) Channels Interface (kHz) (dB) (dB) (mW) Package Price *Wide Bandwidth Delta-Sigma (∆Σ) ADCsADS1626 18 1250 1 Diff P18 w/FIFO 615 93 –101 515 TQFP-64 $15.50ADS1625 18 1250 1 Diff P18 615 93 –101 515 TQFP-64 $14.95ADS1610 16 10000 1 Diff P16 4900 86 –94 960 TQFP-64 $19.95ADS1606 16 5000 1 Diff P16 w/FIFO 2450 88 –99 570 TQFP-64 $15.50ADS1605 16 5000 1 Diff P16 2450 88 –99 570 TQFP-64 $14.95ADS1602 16 2500 1 Diff Serial 1230 91 –103 530 TQFP-48 $12.50ADS1601 16 1250 1 Diff Serial 615 92 –103 350 TQFP-48 $9.95*Suggested resale price in U.S. dollars in quantities of 1,000.New products are listed in bold red.Amplifier and Data Converter Selection Guide Texas Instruments 3Q 2007