米6体育平台手机版

ZHCSK67B June 2017 – August 2019 ADS1287

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RHF|24

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zhcsk67b_pm

6.8 Typical Characteristics

at T_A= 25°C, AVDD = 2.5 V, AVSS = –2.5 V, DVDD = 3.3 V, f_CLK = 1.024 MHz, V_(REFP) = 0 V, V_(REFN) = –2.5 V, gain = 1, high-resolution and low-power modes, chop enabled, offset disabled, and f_DATA = 1000 SPS (unless otherwise noted)

Shorted input, high-resolution mode,
gain = 1, 8192 points, SNR = 113.2 dB

Figure 8. Output Spectrum

Shorted input, chop disabled, high-resolution mode,
gain = 8, 8192 points, SNR = 111.3 dB

Figure 10. Output Spectrum

Shorted input, low-power mode, offset enabled,
gain = 8, 8192 points, SNR = 108.4 dB

Figure 12. Output Spectrum

f_IN = 31.25 Hz, –0.5 dB, high-resolution mode,
gain = 1, 8192 points

Figure 14. Output Spectrum

f_IN = 31.25 Hz, –0.5 dB, high-resolution mode,
gain = 8, 8192 points

Figure 16. Output Spectrum

f_IN = 31.25 Hz, –0.5 dB, low-power mode,
gain = 1, 8192 points

Figure 18. Output Spectrum

f_IN = 31.25 Hz, –0.5 dB, low-power mode,
gain = 8, 8192 points

Figure 20. Output Spectrum

High-resolution mode, V_IN = –0.5 dB

Figure 22. THD vs Input Frequency

f_IN = 31.25 Hz, –0.5 dB, high-resolution mode

Figure 24. THD vs Temperature

Shorted input, high-resolution mode

Figure 26. SNR vs Temperature

Shorted input

Figure 28. SNR vs Clock Frequency

Low-power mode

Figure 30. CMRR vs Frequency

Chop enabled, gain = 1, high-resolution mode

Figure 32. Input Current vs Input Voltage

Chop enabled, gain = 1, 30 units

Figure 34. Offset Error Histogram

Offset enabled (50 mV), low-power mode,
gain = 1, 30 units

Figure 36. Offset Error Histogram

Gain = 1, 30 units

Figure 38. Gain Error Histogram

Gain = 2, 4, 8, 16 match to gain = 1;
30 units

Figure 40. Gain Match Error Histogram

Figure 42. Analog Supply Current vs Temperature

Shorted input, high-resolution mode,
gain = 8, 8192 points, SNR = 111.8 dB

Figure 9. Output Spectrum

Shorted input, low-power mode, offset enabled,
gain = 1, 8192 points, SNR = 110.1 dB

Figure 11. Output Spectrum

Shorted input, low-power mode, chop disabled,
gain = 8, 8192 points, SNR = 108.0 dB

Figure 13. Output Spectrum

f_IN = 31.25 Hz, –20 dB, high-resolution mode,
gain = 1, 8192 points

Figure 15. Output Spectrum

f_IN = 31.25 Hz, –20 dB, high-resolution mode,
gain = 8, 8192 points

Figure 17. Output Spectrum

f_IN = 31.25 Hz, –20 dB, low-power mode,
gain = 1, 8192 points

Figure 19. Output Spectrum

f_IN = 31.25 Hz, –20 dB, low-power mode,
gain = 8, 8192 points

Figure 21. Output Spectrum

Low-power mode, V_IN = –0.5 dB

Figure 23. THD vs Input Frequency

f_IN = 31.25 Hz, –0.5 dB, low-power mode

Figure 25. THD vs Temperature

Shorted input, low-power mode

Figure 27. SNR vs Temperature

High-resolution mode

Figure 29. CMRR vs Frequency

Figure 31. Analog Supply PSRR vs Frequency

Chop disabled, gain = 1, high-resolution mode

Figure 33. Input Current vs Input Voltage

Chop disabled, gain = 1, 30 units

Figure 35. Offset Error Histogram

Chop enabled, gain = 1, 30 units

Figure 37. Offset Temperature Drift Histogram

Gain = 1, 2, 4, 8 and 16 combined; 30 units;
combined high-resolution and low-power modes

Figure 39. Gain Drift Histogram

Figure 41. Reference Input Impedance vs Temperature

High-resolution mode

Figure 43. Digital Supply Current vs Temperature