ADC12048

Features:

·8-channel programmable Differential or Single-Ended multiplexer
·Programmable Acquisition Times and user-controllable Throughput Rates
·Programmable data bus width (8/13 bits)
·Built-in Sample-and-Hold
·Programmable Auto-Calibration and Auto-Zero cycles
·Low power standby mode
·No missing codes





Application

·Medical instrumentation
·Process control systems
·Test equipment
·Data logging
·Inertial guidance




Pinout






Specifications

Supply Voltage (V_A+ and V_D+) 6.0V
Voltage at all Inputs -0.3V to V+ + 0.3V
|V_A+ - V_D+| 300 mV
|AGND - DGND| 300 mV
Input Current at Any Pin (Note 3) ±30 mA
Package Input Current (Note 3) ±120 mA
Power Dissipation (Note 4)
at T_A = 25875 mW
Storage Temperature -65 to +150
Lead Temperature
VF Package
Vapor Phase (60 sec.) 210
Infared (15 sec.) 220
V Package, Infared (15 sec.) 300
ESD Susceptibility (Note 5) 3.0 kV

Resolution	12 bits
Input Channels	8
Interface Type	Parallel
Differential Input	Yes
INL (LSB)	+/-1.0
Max KSample Rate	278 ksps
Min Supply Voltage	4.5 Volt
Max Supply Voltage	5.5 Volt
Reference Source	External
Temperature Min	-40 deg C
Temperature Max	85 deg C
Power Down	Yes
Input Sample/Hold	Yes
Special Features	Undefined
Data Converter Type	ADC
Max Sample Rate	0.278 MSPS
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Description

Operating from a single 5V power supply, the ADC12048 is a 12 bit + sign, parallel I/O, self-calibrating, sampling analog-to-digital converter (ADC) with an eight input fully differential analog multiplexer. The maximum sampling rate is 216 kHz. On request, the ADC goes through a self-calibration process that adjusts linearity, zero and full-scale errors.
The ADC12048's 8-channel multiplexer is software programmable to operate in a variety of combinations of single-ended, differential, or pseudo-differential modes. The fully differential MUX and the 12-bit + sign ADC allows for the difference between two signals to be digitized.
The ADC12048 can be configured to work with many popular microprocessors/microcontrollers and DSPs including National's HPC family, Intel386 and 8051, TMS320C25, Motorola MC68HC11/16, Hitachi 64180 and Analog Devices ADSP21xx.
For complementary voltage references see the LM4040, LM4041 or LM9140.