參數(shù)資料
型號: ADUC7036CCPZ
廠商: Analog Devices Inc
文件頁數(shù): 70/132頁
文件大?。?/td> 0K
描述: IC MCU 96K FLASH DUAL 48LFCSP
標(biāo)準(zhǔn)包裝: 1
系列: MicroConverter® ADuC7xxx
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 20.48MHz
連通性: LIN,SPI,UART/USART
外圍設(shè)備: PSM,溫度傳感器,WDT
輸入/輸出數(shù): 9
程序存儲器容量: 96KB(48K x 16)
程序存儲器類型: 閃存
RAM 容量: 1.5K x 32
電壓 - 電源 (Vcc/Vdd): 3.5 V ~ 18 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 2x16b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 115°C
封裝/外殼: 48-VFQFN 裸露焊盤,CSP
包裝: 托盤
ADuC7036
Rev. C | Page 42 of 132
16-BIT, ΣANALOG-TO-DIGITAL CONVERTERS
The ADuC7036 incorporates two independent Σ-Δ analog-to-
digital converters (ADCs): the current channel ADC (I-ADC)
and the voltage/temperature channel ADC (V-/T-ADC). These
precision measurement channels integrate on-chip buffering, a
programmable gain amplifier, 16-bit, Σ-Δ modulators, and
digital filtering for precise measurement of current, voltage,
and temperature variables in 12 V automotive battery systems.
CURRENT CHANNEL ADC (I-ADC)
The I-ADC converts battery current sensed through an external
100 μΩ shunt resistor. On-chip programmable gain means that
the I-ADC can be configured to accommodate battery current
levels from ±1 A to ±1500 A.
As shown in Figure 18, the I-ADC employs a Σ-Δ conversion
technique to attain 16 bits of no missing codes performance.
The Σ-Δ modulator converts the sampled input signal into a
digital pulse train whose duty cycle contains the digital infor-
mation. A modified Sinc3, programmable, low-pass filter is
then used to decimate the modulator output data stream to give
a valid 16-bit data conversion result at programmable output
rates from 4 Hz to 8 kHz in normal mode and from 1 Hz to
2 kHz in low power mode.
The I-ADC also incorporates counter, comparator, and accu-
mulator logic. This allows the I-ADC result to generate an
interrupt after a predefined number of conversions has elapsed
or the I-ADC result exceeds a programmable threshold value.
A fast ADC overrange feature is also supported. Once enabled,
a 32-bit accumulator automatically sums the 16-bit I-ADC results.
The time to a first valid (fully settled) result on the current channel
is three ADC conversion cycles with chop mode disabled and
two ADC conversion cycles with chop mode enabled.
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