at49bv080 ATMEL Corporation, at49bv080 Datasheet - Page 7

• Manufacturer Part Number: at49bv080
• Description: Replacing At84as003/004 Adc With At84as003/004b Adc
• Manufacturer: ATMEL Corporation

3. AT84AS003/004 to AT84AS003/004B: Application Information
3.1
Table 3-1.
3.2
e2v semiconductors SAS 2006
Analog power supplies
Digital power supplies
Analog and Digital Power Supplies
Digital Control Inputs Implementation (SDAEN, B/GB, PGEB)
Power Supplies
Power Supplies
This section discusses the board implementation of the previous changes.
Advantage: Since the input signals are CMOS compatible, the ADC can be connected directly to FPGA
or microcontroller devices. The default level remains unchanged at GND.
Summary: The main differences between the AT8AS003/004 and the AT84AS003/004B are the control
levels.
The following tables outline examples of configurations used for the existing AT84AS003/004 and
replacement part AT84AS003/004B. The implementation describes either pin re-assignments, removal
of negative logic transformer or description of forward compatibility for V
• The active threshold becomes +1.3V instead of –1.3V
• The activated level becomes +3.3V instead of –5V
Replacing AT84AS003/004 ADC with AT84AS003/004B ADC
V
Output buffers
VMINUSD
EE
AT84AS003/004
–5V
–2.2V
AT84AS003/004B
–2.2V
0V
EE
and V
0812D–BDC–12//06
CC
Recommendations
Change regulator
To be connected to
digital ground plane
selection.
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