MCP3465R datasheet(13/110 Pages) MICROCHIP

13 / 110 page

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DS20006414C-page 13

MCP3465R

2.0

TYPICAL PERFORMANCE CURVES

Note:

Unless otherwise indicated, AVDD = 3.3V; DVDD = 3.3V; TA = +25°C; MCLK = 4.9152 MHz;

VIN = -0.5 dBFS at 50 Hz; VREF =AVDD; ADC_MODE = 11. All other registers are set to the default value.

Histogram ticks are centered at their bin center.

FIGURE 2-1:

FFT Output Spectrum,

fin = 50 Hz (External VREF).

FIGURE 2-2:

FFT Output Spectrum,

fin = 1 kHz (External VREF).

FIGURE 2-3:

FFT Output Spectrum,

fin = 50 Hz (Internal VREF).

FIGURE 2-4:

FFT Output Spectrum,

fin = 1 kHz (Internal VREF).

FIGURE 2-5:

Output Noise Histogram

(External VREF).

FIGURE 2-6:

Output Noise Histogram

(Internal VREF).

Note:

The graphs and tables provided following this note are a statistical summary based on a limited number of

samples and are provided for informational purposes only. The performance characteristics listed herein

are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified

operating range (e.g., outside specified power supply range) therefore outside the warranted range.

-180

-160

-140

-120

-100

-80

-60

-40

-20

500

1000

1500

2000

2500

Frequency (Hz)

IN = -0.5 dBFS @ 50 Hz

FFT 16384 samples

-180

-160

-140

-120

-100

-80

-60

-40

-20

500

1000

1500

2000

2500

Frequency (Hz)

IN = -0.5 dBFS @ 1 kHz

FFT 16384 samples

-180

-160

-140

-120

-100

-80

-60

-40

-20

500

1000

1500

2000

2500

Frequency (Hz)

IN = -0.5 dBFS @ 50 Hz

FFT 16384 samples

-180

-160

-140

-120

-100

-80

-60

-40

-20

500

1000

1500

2000

2500

Frequency (Hz)

IN = -0.5 dBFS @ 1 kHz

FFT 16384 samples

10000

20000

30000

40000

50000

60000

70000

-10

-9-8-7-6-5-4-3-2-10

ADC Output Code (LS )

VIN = 0V

CONV_MODE[1:0] = 11

64000 samples

Bin size = 1 LS

Histograms may show up

to 2 bins equally

distributed if offset is close

to a round LS value

(Intrinsic noise << 16-bit

quantization noise)

10000

20000

30000

40000

50000

60000

70000

-12 -11 -10

-9

-8

-7

-6

-5

-4

-3

-2

ADC Output Code (LSB)

IN = 0V

CONV_MODE[1:0] = 11

64000 samples

Bin size = 1 LSB

Histograms may show

up to 2 bins equally

distributed if offset is

close to a round LSB

value

(Intrinsic noise << 16-bit

quantization noise)

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