Kintex-7 FPGAs Data Sheet: DC and AC Switching Characteristics
XADC Specifications
Table 68: XADC Specifications
Parameter
Symbol
Comments/Conditions
Min
Typ
Max
Units
V CCADC = 1.8V ± 5%, V REFP = 1.25V, V REFN = 0V, ADCCLK = 26 MHz, T j = –40°C to 100°C, Typical values at T j =+40°C
ADC Accuracy (1)
Resolution
12
Bits
Integral
Nonlinearity (2)
INL
±3
LSBs
Differential Nonlinearity
Offset Error
Gain Error
Offset Matching
Gain Matching
Sample Rate
DNL
No missing codes, guaranteed monotonic
Offset calibration enabled
Gain calibration disabled
Offset calibration enabled
Gain calibration disabled
0.1
±1
±6
±0.5
4
0.3
1
LSBs
LSBs
%
LSBs
%
MS/s
Signal to Noise
Ratio (2)
SNR
F SAMPLE = 500KS/s, F IN = 20KHz
60
dB
RMS Code Noise
External 1.25V reference
On-chip reference
3
2
LSBs
LSBs
Total Harmonic
Distortion (2)
THD
F SAMPLE = 500KS/s, F IN = 20KHz
70
dB
ADC Accuracy at Extended Temperatures
Resolution
T j = –55°C to 125°C
10
Bits
Integral Nonlinearity (2)
Differential Nonlinearity
INL
DNL
T j = –55°C to 125°C
No missing codes, guaranteed monotonic,
±1
±1
LSB
(at 10 bits)
T j = –55°C to 125°C
Analog Inputs (3)
ADC Input Ranges
Maximum External Channel Input Ranges
Unipolar operation
Bipolar operation
Unipolar common mode range (FS input)
Bipolar common mode range (FS input)
Adjacent channels set within these ranges
should not corrupt measurements on adjacent
0
–0.5
0
+0.5
–0.1
1
+0.5
+0.5
+0.6
V CCADC
V
V
V
V
V
channels
Auxiliary Channel Full
FRBW
250
KHz
Resolution Bandwidth
On-Chip Sensors
Temperature Sensor Error
Supply Sensor Error
T j = –40°C to 100°C.
T j = –55°C to +125°C
Measurement range of V CCAUX 1.8V ±5%
T j = –40°C to +100°C
Measurement range of V CCAUX 1.8V ±5%
±4
±6
±1
±2
°C
°C
%
%
T j = –55°C to +125°C
Conversion Rate (4)
Conversion Time - Continuous
Conversion Time - Event
DRP Clock Frequency
ADC Clock Frequency
t CONV
t CONV
DCLK
ADCCLK
Number of ADCCLK cycles
Number of CLK cycles
DRP clock frequency
Derived from DCLK
26
8
1
32
21
250
26
Cycles
Cycles
MHz
MHz
DS182 (v2.8) March 4, 2014
Product Specification
57
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