AM4376 datasheet(115/261 Pages) TI

115 / 261 page

AM4376, AM4377, AM4378, AM4379

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SPRS851B – JUNE 2014 – REVISED APRIL 2015

Table 5-6. ADC1 Electrical Parameters (continued)

PARAMETER

CONDITION

MIN

NOM

MAX

UNIT

Bypass mode

5.5

Input Capacitance

Gain mode

Differential Input

Impedance(3)

Bypass mode

Internal Voltage Reference:

VDDA_ADC1 = 1.8 V

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.8 V

Input Signal: 30 kHz sine wave at

Signal-to-Noise Ratio

-0.5 dB Full Scale

(SNR)

Gain mode

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.2 V

Input Signal: 5 kHz sine wave at

Full Scale

Bypass mode

Internal Voltage Reference:

VDDA_ADC1 = 1.8 V

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.8 V

Input Signal: 30 kHz sine wave at

Total Harmonic Distortion

-0.5 dB Full Scale

(THD)

Gain mode

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.2 V

Input Signal: 5 kHz sine wave at

Full Scale

Bypass mode

Internal Voltage Reference:

VDDA_ADC1 = 1.8 V

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.8 V

Input Signal: 30 kHz sine wave at

Spurious Free Dynamic

-0.5 dB Full Scale

Range

Gain mode

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.2 V

Input Signal: 5 kHz sine wave at

Full Scale

Bypass mode

Internal Voltage Reference:

VDDA_ADC1 = 1.8 V

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.8 V

Input Signal: 30 kHz sine wave at

Signal-to-Noise Plus

-0.5 dB Full Scale

Distortion

Gain mode

External Voltage Reference:

ADC1_VREFP - ADC1_VREFN =

1.2 V

Input Signal: 5 kHz sine wave at

Full Scale

ADC1_VREFP and ADC1_VREFN Input Impedance

Input Impedance of

f = input frequency

[1/((65.97 x 10-12) x f)]

ADC1_AIN[7:0](4)

Specifications

115

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