XRD6406 Datasheet, PDF (6/12 Pages) Exar Corporation – CMOS 6 MSPS, 10-Bit, High Speed Analog-to-Digital Converter

XRD6406
Analog
Input
DNL LSB
Output
Codes
Code Width (N) = V_(N+1) -- V_(N)
LSB = [ V_RT -- V_RB ] / 1024
DNL_(N) = [ V_(N+1) -- V_(N) ] -- LSB
V_(N+1)
V_(N)
N+1
N
N--1
Output
Codes
7
Real Transfer Line
6
5
INL
4
3
2
1
LSB
Best Fit Line
EFS
Ideal Transfer Line
EZS
Analog Input (Volt)
Figure 3. DNL Measurement
Figure 4. INL Error Calculation
+5V
0.1mF
10mF
10mF
Analog
Input
50W
C₅
C₄
C₃
C₂
C₁
AV_DD DV_DD
V_IN
DB9
DB8
V_RTS
DB7
DB6
V_RT
DB5
DB4
R3
XRD6406
R2
DB3
DB2
DB1
DB0
R1
V_RB
OE
V_{RBS GND} CLK
C₁--C₅ = 0.1mF
0.1mF
Digital
Outputs
Sample
Clock
Figure 5. Typical Circuit Connections
+5V
Analog
Input
V₄
V₃
V₂
V₁
50W
N/C
C₄
C₃
C₂
C₁
N/C
10mF
V_IN^{AVDD, DVD}_D^D_B9
V_RTS
DB8
V_RT
DB7
DB6
DB5
R3
DB4
XRD6406 DB3
R2
DB2
DB1
DB0
R1
OE
V_RB
CLK
V_RBS GND
C₁--C₄ = 0.1mF
V₄ > V₃ > V₂ > V₁ > GND
0.1mF
Digital
Outputs
Sample
Clock
Figure 6. Creating a Piece Wise Linear
Transfer Function
Rev. 1.00
6