EVAL-ADUC832QSZ Analog Devices Inc, EVAL-ADUC832QSZ Datasheet - Page 11

• Manufacturer Part Number: EVAL-ADUC832QSZ
• Description: KIT DEV FOR ADUC832 QUICK START
• Manufacturer: Analog Devices Inc
• Series: QuickStart™ Kitr
• Type: MCUr

Specifications of EVAL-ADUC832QSZ

• Contents: Evaluation Board, Cable, Power Supply, Software and Documentation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ADuC832
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: EVAL-ADUC832QS; EVAL-ADUC832QS

The typical performance plots presented in this section illustrate
typical performance of the ADuC832 under various operating
conditions.
TPC 1 and TPC 2 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 operating at a sampling rate of 152 kHz and the
typically worst case errors in both plots are just less than 0.3 LSBs.
TPC 3 and TPC 4 show the variation in worst case positive
(WCP) INL and worst case negative (WCN) INL versus external
reference input voltage.
TPC 5 and TPC 6 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 operating at a sampling rate of 152 kHz and the
typically worst case errors in both plots is just less than 0.2 LSBs.
TPC 7 and TPC 8 show the variation in worst case positive
(WCP) DNL and worst case negative (WCN) DNL versus
external reference input voltage.
TPC 9 shows a histogram plot of 10,000 ADC conversion results
on a dc input with V
code distribution pointing to the low noise performance of the
on-chip precision ADC.
REV. 0
–0.4
–0.8
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.6
–1.0
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
0
0
0
0
TPC 1. Typical INL Error, V
TPC 2. Typical INL Error, V
511
511
DD
1023
1023
= 5 V. The plot illustrates an excellent
1535
1535
ADC CODES
ADC CODES
2047
2047
2559
2559
AV
f
S
DD
DD
3071
= 152kHz
AV
3071
f
DD
S
= 5 V
= 3 V
= 152kHz
DD
/ DV
/DV
3583
DD
3583
DD
= 5V
Typical Performance Characteristics–ADuC832
= 3V
4095
4095
–11–
TPC 10 shows a histogram plot of 10,000 ADC conversion
results on a dc input for V
very tight code distribution of 1 LSB with the majority of codes
appearing in one output pin.
TPC 11 and TPC 12 show typical FFT plots for the ADuC832.
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 resultant 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.
TPC 13 and TPC 14 show typical dynamic performance versus
external reference voltages. Again, excellent ac performance can
be observed in both plots with some roll-off being observed as
V
TPC 15 shows typical dynamic performance versus sampling
frequency. SNR levels of 71 dBs are obtained across the sampling
range of the ADuC832.
TPC 16 shows the voltage output of the on-chip temperature
sensor versus temperature. Although the initial voltage output at
25ºC can vary from part to part, the resulting slope of –2 mV/ºC
is constant across all parts.
REF
TPC 3. Typical Worst Case INL Error vs. V
TPC 4. Typical Worst Case INL Error vs. V
–0.2
–0.4
–0.6
falls below 1 V.
–0.2
–0.4
–0.6
–0.8
0.8
0.6
0.4
1.2
1.0
0.2
0.8
0.6
0.4
0.2
0
0
0.5
0.5
1.0
1.0
EXTERNAL REFERENCE – V
EXTERNAL REFERENCE – V
DD
1.5
1.5
= 3 V. The plot again illustrates a
2.0
2.0
WCN INL
WCN INL
2.5
2.5
WCP INL
WCP INL
AV
f
AV
f
S
S
DD
= 152kHz
= 152kHz
DD
/DV
/DV
5.0
3.0
DD
REF
REF
DD
= 5V
= 3V
, V
, V
DD
DD
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
= 5 V
= 3 V