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Infineon Technologies TC1796 User Manual

Infineon Technologies TC1796
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TC1796
Peripheral Units (Vol. 2 of 2)
Analog-to-Digital Converter (ADC)
User’s Manual 25-1 V2.0, 2007-07
ADC, V2.0
25 Analog-to-Digital Converter (ADC)
The TC1796 contains two medium-speed Analog-to-Digital Converters (ADC0 and
ADC1) with identical functionality and a third fast Analog-to-Digital Converter (FADC).
ADC0 and ADC1 provide 2-3 µs conversion time @ 10-bit resolution and are intended
primarily for single-ended signals. They offer a very flexible and comprehensive control
for monitoring a large number of relatively slow signals, including synchronous
conversion of both ADCs.
The FADC offers very fast conversion rates (280 ns @ 10-bit resolution) thus allowing
sampling of high-frequency signals. For slow and mid-range frequency signal heavy
oversampling can be performed to avoid the use of expensive filters.
The FADC is described in Chapter 26. This chapter describes in detail the two Analog-
to-Digital converters ADC0 and ADC1. It contains the following sections:
Functional description of the ADC Kernel for ADC0 and ADC1 (see Page 25-1)
Register descriptions for all ADC Kernel specific registers (see Page 25-57)
TC1796 implementation-specific details and registers of the ADC0/ADC1 modules,
including port connections and control, service request control, address decoding,
and clock control (see Page 25-100).
Note: The ADC Kernel register names described in Section 25.2 are referenced in the
TC1796 User’s Manual with the module name prefix “ADC0_” for the ADC0
interface and “ADC1_” for the ADC1 interface.
25.1 ADC Kernel Description
The two on-chip ADC modules of the TC1796 are analog-to-digital converters with 8-bit,
10-bit, or 12-bit resolution including sample & hold functionality. The A/D converters
operate by the method of successive approximation. A multiplexer selects up to
32 analog inputs that can be connected to the 16 conversion channels in each ADC
module. An automatic self-calibration adjusts the ADC modules to changing
temperatures or process variations.
Features
8-bit, 10-bit, 12-bit A/D conversion
Conversion time below 2.5 µs @ 10-bit resolution
Extended channel status information on request source
Successive approximation conversion method
Total Unadjusted Error (TUE) of ±2 LSB @ 10-bit resolution
Integrated sample & hold functionality
Direct control of up to 16(32) analog input channels per ADC
Dedicated control and status registers for each analog channel
Powerful conversion request sources
Selectable reference voltages for each channel

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Infineon Technologies TC1796 Specifications

General IconGeneral
BrandInfineon Technologies
ModelTC1796
CategoryController
LanguageEnglish