MAX1003CAX+ Maxim Integrated Products, MAX1003CAX+ Datasheet - Page 7

• 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

Figure 2. Single-Ended AC-Coupled Input
Figure 4. Single-Ended DC-Coupled Input
For applications where a DC component of the input
signal is present, Figures 4 and 5 show single-ended
and differential DC-coupled input circuits. The ampli-
fiers’ input common-mode voltage range extends from
1.75V to 2.75V. To prevent attenuation of the input
signal’s DC component in this mode, disable the offset-
correction amplifier by grounding the _OCC+ and
_OCC- pins for the I and Q blocks (Figures 4 and 5).
1.75V TO 2.75V
V
SOURCE
0.1 F
V
V
SOURCE
REF
0.1 F
_IN+
_IN-
20k
_______________________________________________________________________________________
_IN+
_IN-
20k
20k
20k
INPUT
Low-Power, 90Msps, Dual 6-Bit ADC
AMP
2.35V INTERNAL REFERENCE
INPUT
AMP
OFFSET CORRECTION DISABLED
2.35V INTERNAL REFERENCE
_OCC+
_OCC+
0.22 F
CORREC-
OFFSET
MAX1003
TION
CORREC-
OFFSET
MAX1003
TION
_OCC-
_OCC-
The I and Q ADC blocks receive the analog signals
from the respective I and Q input amplifiers. The ADCs
use flash conversion with 63 fully differential compara-
tors to digitize the analog input signal into a 6-bit output
in offset binary format.
Figure 3. Differential AC-Coupled Input
Figure 5. Differential DC-Coupled Input
DIFFERENTIAL SOURCE
WITH COMMON MODE
FROM 1.75V TO 2.75V.
V
V
SOURCE
SOURCE
0.1 F
0.1 F
_IN+
_IN-
20k
_IN+
_IN-
20k
20k
20k
INPUT
INPUT
AMP
AMP
2.35V INTERNAL REFERENCE
OFFSET CORRECTION DISABLED
2.35V INTERNAL REFERENCE
_OCC+
_OCC+
0.22 F
CORREC-
OFFSET
MAX1003
CORREC-
OFFSET
MAX1003
TION
TION
_OCC-
_OCC-
ADCs
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