adc1020 austriamicrosystems, adc1020 Datasheet - Page 10

• Manufacturer Part Number: adc1020
• Description: Cmos 10-bit Pipelined A/d Converter
• Manufacturer: austriamicrosystems

Datasheet : ADC1020 – C35
1)
2)
3)
4)
Revision C, 07.09.02
TYPICAL APPLICATION
The ADC1020 is targeted for general purpose sampling ADC
functions where high-speed conversion rates and medium
precision are of critical importance.
The value of the capacitor depends on the input frequency.
For SMD capacitors use the type NPO and for normal capacitors use the type MKT for best performance.
The accuracy of both reference voltages must be higher than the resolution of the ADC. In typical applications both
The accuracy of both input voltages must be higher than the resolution of the ADC. In typical applications both
For SMD capacitors use the type NPO and for normal capacitors use the type MKT for best performance.
voltages are filtered by a second order low pass filter (f
voltages are filtered by a third order low pass filter (f
2.65V
CPK
3)
CPK
CPK
Configuration: Op. Mode 6 at 20MS/sec, fully differential with VREF=2V
Configuration: Op. Mode 1 at 20MS/sec, fully differential with VREF=1V
CPK
0.65V
10uF
10uF
3)
2)
CPK
2)
100nF
100nF
2)
2)
100pF
1.65V
100pF
1.65V
2)
4)
2)
VIN
4)
VIN
CPK
4)
CPK
4)
c
200pF
=12MHz) and buffered with a THS3001.
+3.3V
VSSA
200pF
+3.3V
VSSA
c
=5Hz) and buffered with an AD711.
CPK
1)
CPK
VDDA
1)
VDDA
200pF
200pF
1)
1)
1)2)3)4)
1.25V
+3.3V
VSSD
APPLICATION
!
!
!
!
!
+3.3V
VSSD
3)
CPK
CPK
VDDD
CPK
VDDD
Video
Imaging
Data acquisition systems
High-speed data transmission
Communications
VDDD
20MHz
VDDD
20MHz
VDDA VDDD
GROUND
VDDA VDDD
GROUND
Page 10 of 11
B<9:0>
B<9:0>
VDDA
CPK
10uA