ADuC841BS62-3 datasheet(12/88 Pages) AD

Nome de Peças	ADuC841BS62-3

Descrição Electrónicos	MicroConverter짰 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU

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Fabricante Electrônico	AD [Analog Devices]

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ADuC841/ADuC842/ADuC843

Rev. 0 | Page 12 of 88

TYPICAL PERFORMANCE CHARACTERISTICS

The typical performance plots presented in this section

illustrate typical performance of the ADuC841/ADuC842/

ADuC843 under various operating conditions.

Figure 5 and Figure 6 show typical ADC integral nonlinearity

(INL) errors from ADC Code 0 to Code 4095 at 5 V and 3 V

supplies, respectively. The ADC is using its internal reference

(2.5 V) and is operating at a sampling rate of 152 kHz; the

typical worst-case errors in both plots are just less than 0.3 LSB.

Figure 7 and Figure 8 also show ADC INL at a higher sampling

rate of 400 kHz. Figure 9 and Figure 10 show the variation in

worst-case positive (WCP) INL and worst-case negative (WCN)

INL versus external reference input voltage.

Figure 11 and Figure 12 show typical ADC differential

nonlinearity (DNL) errors from ADC Code 0 to Code 4095 at

5 V and 3 V supplies, respectively. The ADC is using its internal

reference (2.5 V) and is operating at a sampling rate of 152 kHz;

the typical worst-case errors in both plots are just less than

0.2 LSB. Figure 13 and Figure 14 show the variation in worst-

case positive (WCP) DNL and worst-case negative (WCN) DNL

versus external reference input voltage.

Figure 15 shows a histogram plot of 10,000 ADC conversion

results on a dc input with VDD = 5 V. The plot illustrates an

excellent code distribution pointing to the low noise

performance of the on-chip precision ADC.

Figure 16 shows a histogram plot of 10,000 ADC conversion

results on a dc input for VDD = 3 V. The plot again illustrates a

very tight code distribution of 1 LSB with the majority of codes

appearing in one output pin.

Figure 17 and Figure 18 show typical FFT plots for the parts.

These plots were generated using an external clock input. The

ADC is using its internal reference (2.5 V), sampling a full-scale,

10 kHz sine wave test tone input at a sampling rate of 149.79 kHz.

The resulting FFTs shown at 5 V and 3 V supplies illustrate an

excellent 100 dB noise floor, 71 dB signal-to-noise ratio (SNR),

and THD greater than –80 dB.

Figure 19 and Figure 20 show typical dynamic performance

versus external reference voltages. Again, excellent ac perform-

ance can be observed in both plots with some roll-off being

observed as VREF falls below 1 V.

Figure 21 shows typical dynamic performance versus sampling

frequency. SNR levels of 71 dB are obtained across the sampling

range of the parts.

Figure 22 shows the voltage output of the on-chip temperature

sensor versus temperature. Although the initial voltage output at

25°C can vary from part to part, the resulting slope of −1. 4 mV/°C

is constant across all parts.

ADC CODES

–1.0

0

511

1023

2047

2559

3071

–0.8

1535

3583

–0.6

–0.4

–0.2

0

0.2

0.4

0.6

0.8

1.0

AVDD / DVDD = 5V

fS = 152kHz

4095

Figure 5. Typical INL Error, VDD = 5 V, fs = 152 kHz

ADC CODES

1.0

511

1023

1535

2047

2559

0.6

0.2

–0.2

–0.6

–1.0

0.8

0.4

0

–0.4

–0.8

3071

3583

0

4095

AVDD /DVDD = 3V

f

S = 152kHz

Figure 6. Typical INL Error, VDD = 3 V, fs = 152 kHz

Nº de peça semelhante - ADuC841BS62-3

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Analog Devices	ADUC841BS62-3	903Kb / 88P	MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU REV. 0
	ADUC841BS62-3	838Kb / 88P	MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU REV. 0
	ADuC841BS62-3	908Kb / 88P	MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU REV. 0

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Descrição semelhante - ADuC841BS62-3

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Analog Devices	ADUC843BSZ62-5	908Kb / 88P	MicroConverter짰 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU REV. 0
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