MAX107 Datasheet, PDF (17/21 Pages) Maxim Integrated Products – Dual, 6-Bit, 400Msps ADC with On-Chip, Wideband Input Amplifier

Dual, 6-Bit, 400Msps ADC with On-Chip,
Wideband Input Amplifier
PC BOARD AV_CC
10µF
10nF
PC BOARD AGND
PC BOARD OV_CC
10µF
FERRITE-BEAD
SUPPRESSORS
OV_CCI, OV_CCQ
10nF
4 x 10nF
PC BOARD OGND
AV_CCR
10nF
AGNDR
AV_CCI
10nF
AGNDI
AV_CCQ
10nF
AGNDQ
AV_CC
10nF
AGND
AV_CCR
47pF
AGNDR
AV_CCI
47pF
AGNDI
MAX107
OV_CCI
47pF
OGNDI
OV_CCI
47pF
OGNDI
AV_CCQ
47pF
AGNDQ
OV_CCQ
47pF
OGNDQ
AV_CC
47pF
AGND
OV_CCQ
47pF
OGNDQ
OV_CCI
10nF
OGNDI
OV_CCI
10nF
OGNDI
OV_CCQ
10nF
OGNDQ
OV_CCQ
10nF
OGNDQ
NOTE:
LOCATE ALL 47pF AND 10nF CAPACITORS, WHICH DECOUPLE AV_CCI, AV_CCQ, AV_CCR, OV_CCI, AND OV_CCQ AS CLOSE
AS POSSIBLE TO THE CHIP. IT IS ALSO RECOMMENDED TO CONNECT ALL ANALOG GROUND CONNECTIONS TO A COMMON ANALOG
GROUND PLANE AND ALL DIGITAL GROUND CONNECTIONS TO ONE COMMON DIGITAL GROUND PLANE ON THE PC BOARD. A SIMILAR
TECHNIQUE CAN BE USED FOR ALL ANALOG AND DIGITAL POWER SUPPLIES.
AV_CC = AV_CCI = AV_CCQ = AV_CCR = +5V±5%
OV_CCI = OV_CCQ = +3.3V±10%
Figure 9. MAX107 Decoupling, Bypassing and Grounding
capacitor, to filter power supply noise, in parallel with a
0.1µF capacitor. A combination of 0.01µF in parallel
with high quality 47pF ceramic chip capacitor located
very close to the MAX107 device filters high frequency
noise. A properly designed PC board (see MAX105EV
Kit data sheet) allows the user to connect all analog
supplies and all digital supplies together thereby
requiring only two separate power sources. Decoupling
AV_CC, AV_CCI, AV_CCQ and AV_CCR with ferrite-bead
suppressors prevents further crosstalk between the
individual analog supply pins
Thermal Management
The MAX107 is designed for a thermally enhanced 80-
pin TQFP package, providing greater design flexibility,
increased thermal efficiency and a low thermal junc-
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