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參數(shù)資料
| 型號： | ADUC7032BSTZ-8V-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 69/128頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BATTERY SENSOR PREC 48-LQFP |
| 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： | POR，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 ~ 105°C |
| 封裝/外殼： | 48-LQFP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | ADUC7032BSTZ-8V-RLDKR |
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Preliminary Technical Data
ADuC7032
Rev. PrD | Page 45 of 128
16-BIT
Σ ANALOG TO DIGITAL CONVERTERS
The ADuC7032 incorporates three independent sigma-delta
ADCs namely, the Current Channel ADC (I-ADC), the Voltage
Channel ADC (V-ADC) and the Temperature Channel ADC
(T-ADC). These precision measurement channels integrate on-
chip buffering, programmable gain amplifier, 16-bit sigma-
delta modulators and digital filtering and are intended for the
precision measurement of current, voltage and temperature
variables in 12V automotive battery systems.
CURRENT CHANNEL ADC (I-ADC)
This ADC is intended to convert battery current sensed
through
an
external
100μΩ
shunt
resistor.
On-Chip
programmable gain mean the I-ADC can be configured to
accommodate battery current levels from ±1A to ±1500A
As shown in Figure 15 below, the I-ADC employs a sigma-delta
conversion technique to realize 16 bits of no missing codes
performance. The sigma-delta modulator converts the sampled
input signal into a digital pulse train whose duty cycle contains
the digital information. A modified Sinc3 programmable low-
pass filter is then employed to decimate the modulator output
data stream to give a valid 16-Bit data conversion result at
programmable output rates from 4Hz to 8 KHz in Normal
mode and 1Hz to 2kHz in Low Power Mode.
The I-ADC also incorporates counter, comparator and
accumulator logic. This allows the I-ADC result to generate an
interrupt after a predefined number of conversions have
elapsed or if the I-ADC result exceeds a programmable
threshold value. A fast ADC-Over-Range 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 turned
off and two ADC conversion cycles with chop mode turned on.
SIGMA-
DELTA
MODULATOR
PROGRAMMABLE
DIGITAL
FILTER
SIGMA-DELTA A/D CONVERTER
VREF
CHOP
OUTPUT
AVERAGE
PGA
CHOP
OUTPUT AVERAGE
AS PART OF THE CHOPPING
IMPLEMENTATION, EACH
DATA-WORD OUTPUT
FROM THE FILTER IS
SUMMED AND AVERAGED
WITH ITS PREDECESSOR
SIGMA-DELTA ADC
THE SIGMA-DELTA
ARCHITECTURE ENSURES
16 BITS NO MISSING
CODES.
PRECISION
REFERENCE
THE INTERNAL 5PPM/C
REFERNCE IS ROUTED TO THE
ADC BY DEFAULT. AN EXTERNAL
REFRENCEON THE VREF PIN CAN
ALSO BE SELECTED
ANALOG INPUT
PROGRAMMABLE
CHOPPING
THE INPUTS ARE
ALTERNATELY REVERSED
THROUGH THE
CONVERSION CYCLE.
BUFFER AMPLIFIER
THE BUFFER AMPLIFIER
PRESENTS A HIGH
IMPEDANCE INPUT STAGE
FOR THE PGA DRIVING THE
SIGMA_DELTA MODULATOR.
THE MODULATOR PROVIDES
AHIGHFREQUENCY 1-BIT
DATA STREAM (THE OUTPUT
OF WHICH IS ALSO CHOPPED)
TO THE DIGITAL FILTER,
THE DUTY CYCLE OF WHICH
REPRESENTS THE SAMPLED
ANALOG INPUT VOLTAGE.
SIGMA-DELTA
MODULATOR
PROGRAMMABLE
DIGITAL FILTER
THE SINC3 FILTER REMOVES
QUANTIZATION NOISE INTRODUCED
BY THE MODULATOR. THE UPDATE
RATE AND BANDWIDTH OF THIS
FILTER ARE PROGRAMMABLE
VIA THE ADCFLT MMR
THE OUPUT WORD FROM THE
DIGITAL FILTER IS SCALED
BY THE CALIBRATION
COEFFICIENTS BEFORE
BEING PROVIDED AS
THE CONVERSION RESULT.
OUTPUT SCALING
PROGRAMMABLE GAIN
AMPLIFIER
THE PROGRAMMABLE
GAIN AMPLIFIER ALLOWS
EIGHT BIPOLAR INPUT
RANGES FROM ±2.3mV TO
±1.2V (INT VREF =1.2V).
BUF
OFFSET
COEFFICIENT
OUTPUT
FORMAT
ADC
RESULT
ADC
RESULT
ADC RESULT
ACCUMULATOR
ADC RESULT
COUNTER
THRESHOLD
COUNTER
ADC
THRESHOLD
+
-
x
ADC
INTERRUPT
INTERNAL
REFERNCE
GAIN
COEFFICIENT
THE ADC RESULT IS
COMPARED TO A PRESET
THRESHOLD
DIGITAL COMPARATOR
COUNTS UP IF ADC
RESULT>THRESHOLD
COUNTS DOWN/RESET IF ADC
RESULT<THRESHOL. GENER-
ATES AN INTERRUPT ON
COUNTER OVERFLOW
THRESHOLD COUNTER
ACCUMULATES THE ADC
RESULT
ADC ACCUMULATOR
GENERATES AN ADC RESULT
FROM ANY ONE OF FOUR
SOURCES
ADC INTERRUPT GENERATOR
COUNTS ADC RESULTS,
GENERATES AN INTERRUPT
ON COUNTER OVERFLOW
ADC RESULT COUNTER
GENERATES AN ADC
INTERRUPT IF THE CURRENT
INPUT IS GROSSLY
OVER-RANGED
ADC FAST OVER-RANGE
IN+
IN-
REG_AVDD
ANALOG INPUT
Diagnostic Current Sources
Two 50uA IIN+ and IIN-
Current Sources
VREF/
136
GND
ANALOG INPUT
Diagnostic Voltage Source
VREF/136 Voltage Input
Figure 15: Current ADC, Top Level Overview
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| ADUC7033BSTZ-88 | 功能描述:IC BATT SENSOR PREC 48LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:Impedance Track™ 功能:燃料，電量檢測計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.4 V ~ 2.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名稱:296-21665-2 |
| ADUC7033BSTZ-88-RL | 功能描述:IC BATT SENSOR PREC 48LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR) |
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