Rainbow Electronics ADC10D040 - Manual (Page 3)

Block Diagram
20029702
Pin Descriptions and Equivalent Circuits
Pin No. Symbol Equivalent Circuit Description
48
47
I+
I−
Analog inputs to “I” ADC. With V
REF
= 1.4V, conversion range
is 1.15V to 1.85V with GAIN pin low, or 0.8V to 2.2V with
GAIN pin high.
37
38
Q+
Q−
Analog inputs to “Q” ADC. With V
REF
= 1.4V, conversion
range is 1.15V to 1.85V with GAIN pin low, or 0.8V to 2.2V
with GAIN pin high.
1 V
REF
Analog Reference Voltage input. The voltage at this pin
should be in the range of 0.6V to 1.6V. With 1.4V at this pin
and the GAIN pin low, the full scale differential inputs are
1.4 V
P-P
. With 1.4V at this pin and the GAIN pin high, the full
scale differential inputs are 2.8 V
P-P
. This pin should be
bypassed with a minimum 1 µF capacitor.
ADC10D040
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