MAX1003CAX+ Maxim Integrated Products, MAX1003CAX+ Datasheet - Page 6

• Manufacturer Part Number: MAX1003CAX+
• Description: IC ADC 6BIT 90MSPS DL 36-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1003CAX+

• Number Of Bits: 6
• Sampling Rate (per Second): 90M
• Data Interface: Parallel
• Number Of Converters: 2
• Power Dissipation (max): 941mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 36-BSOP (0.300", 7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Power, 90Msps, Dual 6-Bit ADC
Single-ended and differential AC-coupled input circuits
are shown in Figures 2 and 3. Each of the amplifier
inputs is internally biased to a 2.35V reference through
a 20kΩ resistor, eliminating external DC bias circuits. A
series 0.1µF capacitor is required at each amplifier
input for AC-coupled signals.
When operating with AC-coupled inputs, the input
amplifiers’ DC offset voltage is nulled to within ±1/2LSB
by an on-chip offset-correction amplifier. An external
Figure 1. Commercial Satellite Receiver System
6
_______________________________________________________________________________________
LNB
EXTERNAL
VCO
TANK
OR
KU BAND
or EQUIV.
TSA5055
RFIN
RFIN
PRESELECTION FILTER
LO
LO
VARACTOR-TUNED
AGC
FROM TANK VOLTAGE
0
90
950MHz TO 2150MHz
DIV
75 CABLE
MAX2102
MOD GND
V
CC
QOUT
IOUT
compensation capacitor is required to set the dominant
pole of the offset-correction amplifier’s frequency
response (Figures 2 and 3). The compensation capaci-
tor will determine the low-frequency corner of the ana-
log input response according to the following formula:
where C is the value of the compensation capacitor in
µF, and f
TANK
c
OR
is the corner frequency in Hz.
6 BITS
6 BITS
90Msps
f
c
MAX1003
= 1 / (0.1 x C)
BUFFER
BUFFER
DATA
DATA
IIN
CLK IN
QIN
ADC CLOCK
MODCTL
F-CONNECTOR
INPUT
AGC
SYNTHESIZER
DSP
FIN
CAR