adc1173cimtcx National Semiconductor Corporation, adc1173cimtcx Datasheet - Page 16

• Manufacturer Part Number: adc1173cimtcx
• Description: 8-bit, 3-volt, 15msps, 33mw A/d Converter
• Manufacturer: National Semiconductor Corporation

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FIGURE 4. Better defining the ADC Reference Voltage. Self-bias is still used, but the reference voltages are trimmed by
FIGURE 5. Driving the reference to force desired values requires driving with a low impedance source, provided by the
providing a small trim current with the operational amplifiers.
transistors. Note that pins 16 and 22 are not connected.
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