MAX1171 Datasheet, PDF (7/12 Pages) Maxim Integrated Products – 12-Bit, 20Msps, TTL-Output ADC

12-Bit, 20Msps, TTL-Output ADC
N
t_PWH
CLK
OUTPUT
N-2
DATA
Figure 1a. Timing Diagram
N+1
t_PWL
t_D
N-1
N+2
DATA VALID
N
DATA VALID
N+1
CLK
t_D
OUTPUT
DATA
DATA VALID
Figure 1b. Single-Event Clock
Table 1. Timing Parameters
PARAMETER
t_D
t_PWH
t_PWL
DESCRIPTION
CLK to Data Valid Prop Delay
CLK High Pulse Width
CLK Low Pulse Width
MIN
TYP
MAX
14
18
20
300
20
UNITS
ns
ns
ns
_______________Detailed Description
The MAX1171 requires few external components to
achieve the stated operation and performance. Figure
2 shows the typical interface requirements when using
the MAX1171 in normal circuit operation. The following
section provides a description of the pin functions and
outlines critical performance criteria for achieving the
optimal device performance.
Power Supplies and Grounding
The MAX1171 requires -5.2V and +5V analog supply
voltages. The +5V supply is common to analog V_CC
and digital DV_CC. A ferrite bead in series with each
supply line reduces the transient noise injected into the
analog V_CC. These beads should be connected as
close to the device as possible. The connection
between the beads and the MAX1171 should not be
shared with any other device. Bypass each power-sup-
ply pin as close to the device as possible. Use 0.1µF
for V_EE and V_CC, and 0.01µF for DV_CC (chip capacitors
are preferred).
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