WM8143-10 Wolfson Microelectronics Ltd., WM8143-10 Datasheet - Page 12

• Manufacturer Part Number: WM8143-10
• Description: WM8143 : 10 or 12-BIT, 4MSPS Analogue Front End For CCD Image Sensors
• Manufacturer: Wolfson Microelectronics Ltd.

WM8143-10
9.6pF for maximum gain and F is the sample frequency
in Hz. Table 2 illustrates the maximum and minimum
input impedance at different frequencies.
Table 2 Effects of Frequency on Input Impedance
Calibration
To achieve optimum performance of the WM8143-10, a
calibration procedure must be implemented. This is
achieved by using a combination of the gain and offset
functions to amplify and shift the input signal so that it
lies within and maximises the input ADC range.
FREQUENCY
SAMPLING
(MHz)
0.5
1
2
4
6
IMPEDANCE
(M ) MIN.
GAIN
6.6
3.3
1.6
0.8
0.5
Wolfson Microelectronics
IMPEDANCE
(K ) MAX.
GAIN
208
104
52
26
17
12
PD Rev 3f June 98
Production Data