MAX11270 datasheet(21/46 Pages) MAXIM

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Table 4. Single-Cycle Mode Input-Referred Noise (µVRMS) vs. Data Rate and PGA Gain

with Sinc Filter*

DATA

RATE

(sps)

PGA ENABLED: GAIN SETTING

128

1.620

1.614

1.655

1.643

0.835

0.833

0.423 0.420 0.219 0.219 0.115 0.120 0.067 0.074 0.046 0.055 0.038 0.048

62.5

1.604

1.652

1.648

1.633

0.850

0.847

0.432 0.433 0.225 0.224 0.118 0.125 0.071 0.079 0.049 0.061 0.043 0.054

100

2.502

2.517

2.524

2.571

1.298

1.285

0.653 0.651 0.344 0.346 0.179 0.186 0.105 0.112 0.068 0.080 0.055 0.070

125

2.479

2.493

2.566

2.580

1.296

1.293

0.666 0.670 0.343 0.347 0.183 0.187 0.105 0.117 0.073 0.088 0.061 0.077

200

3.136

3.232

3.298

3.234

1.655

1.644

0.842 0.834 0.432 0.435 0.232 0.240 0.136 0.150 0.094 0.112 0.078 0.101

250

3.204

3.248

3.297

3.301

1.669

1.649

0.847 0.844 0.439 0.441 0.237 0.248 0.142 0.158 0.101 0.122 0.085 0.111

400

4.961

5.031

5.144

5.151

2.580

2.601

1.311 1.310 0.675 0.684 0.361 0.374 0.206 0.224 0.138 0.165 0.112 0.144

500

4.976

5.076

5.153

5.095

2.603

2.612

1.326 1.331 0.688 0.690 0.368 0.388 0.216 0.238 0.151 0.179 0.127 0.162

800

6.371

6.380

6.556

6.533

3.302

3.298

1.682 1.691 0.869 0.881 0.469 0.487 0.277 0.307 0.194 0.234 0.165 0.212

1000

6.381

6.480

6.597

6.628

3.337

3.344

1.710 1.710 0.883 0.899 0.484 0.509 0.294 0.333 0.214 0.264 0.187 0.240

1600

9.983 10.128 10.317 10.336

5.197

5.227

2.648 2.658 1.367 1.390 0.743 0.771 0.440 0.484 0.306 0.368 0.260 0.333

2000

10.201 10.312 10.479 10.516

5.283

5.299

2.699 2.708 1.403 1.434 0.772 0.809 0.473 0.534 0.350 0.425 0.303 0.389

3200

12.812 12.905 13.183 13.192

6.664

6.649

3.391 3.406 1.764 1.786 0.963 1.006 0.583 0.649 0.419 0.511 0.363 0.466

4000

12.996 13.159 13.416 13.415

6.764

6.795

3.464 3.474 1.815 1.843 1.010 1.071 0.634 0.723 0.478 0.591 0.425 0.544

6400

20.411 20.637 21.067 21.080 10.571 10.598 5.395 5.426 2.816 2.842 1.546 1.617 0.940 1.056 0.686 0.837 0.600 0.758

12800

21.755 21.988 22.412 22.461 11.320 11.330 5.806 5.855 3.051 3.129 1.724 1.847 1.114 1.277 0.860 1.056 0.769 0.975

*VIN = 0V. VAVDD = 3.6V, VAVSS = 0V, VREF = 3.6V, TA = +25°C, external clock. Data taken with PGA output 150mV from AVDD

and AVSS. This table is not tested and is based on characterization data.

MAX11270

24-Bit, 10mW, 130dB SNR, 64ksps Delta-Sigma

ADC with Integrated PGA

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