MAX1125 Datasheet, PDF (9/12 Pages) Maxim Integrated Products – 8-Bit, 300Msps Flash ADC

8-Bit, 300Msps Flash ADC
OPTIONAL
BUFFER
*
10Ω TO
25Ω
VRTF
U1
VRTS
DGND _L AGND
VIN
0.01µF
PREAMP COMPARATOR
0.01µF
VEE
-5.2V
LINV
MINV
1k,
0.1%
10Ω TO
25Ω VR3
U2
1k,
0.1%
NOTE: U1–U5
ARE OP07 OR
EQUIVALENT,
LOW-NOISE,
LOW-OFFSET
AMPLIFIERS.
1k,
0.1%
0.01µF
10Ω TO
25Ω VR2
U3
0.01µF
256
CLOCK
BUFFER
255
152
151
128
256-BIT
TO 8-BIT
ENCODER
127
*^{ANALOG INPUT (FORCE)}
**^{ANALOG INPUT (SENSE)}
OVERRANGE
D8
D7
(MSB)
D6
ECL
LATCHES
AND
BUFFERS
D5
D4
10Ω TO
64
D3
25Ω VR1
U4
D2
63
0.01µF
1k,
2
0.1%
VREF
-2V
CONVERT
10Ω TO
25Ω VRBF
U5
0.01µF
100116
VRBS
CLK
1
MAX1125
2
CLK
50Ω 50Ω
** ^VIN
-2V
(ANALOG)
0.01µF
D1
D0
(LSB)
DRINV
DREADY
0.01µF ^VEE
VEE
-5.2V
0.01µF
AGND _-2V
50Ω
x 10
-2V
(DIGITAL)
0.01µF
Figure 2. Typical Interface Circuit 2 (CERQUAD package only)
_______________________________________________________________________________________ 9