- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374044 > ADUuC7027BSTZ62-RL (Analog Devices, Inc.) Precision Analog Microcontroller 12-bit Analog I/O, ARM7TDMI MCU PDF資料下載
參數(shù)資料
| 型號： | ADUuC7027BSTZ62-RL |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Precision Analog Microcontroller 12-bit Analog I/O, ARM7TDMI MCU |
| 中文描述： | 精密模擬微控制器的12位模擬I / O，ARM7TDMI的微控制器 |
| 文件頁數(shù)： | 42/92頁 |
| 文件大小： | 850K |
| 代理商： | ADUUC7027BSTZ62-RL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁當(dāng)前第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁
ADuC7019/20/21/22/24/25/26/27
DRIVING THE ANALOG INPUTS
Internal or external reference can be used for the ADC. In
differential mode of operation, there are restrictions on
common-mode input signal (V
CM
), which is dependent on the
reference value and supply voltage used to ensure that the signal
remains within the supply rails. Table 17 gives some calculated
V
CM
min and V
CM
max for some conditions.
Table 17. V
CM
Ranges
AV
DD
V
REF
V
CM
Min
V
CM
Max
2.5 V
1.25 V
2.05 V
2.048 V
1.024 V
2.276 V
1.25 V
0.75 V
2.55 V
2.5 V
1.25 V
1.75 V
2.048 V
1.024 V
1.976 V
1.25 V
0.75 V
2.25 V
CALIBRATION
By default, the factory set values written to the ADC offset
(ADCOF) and gain coefficient registers (ADCGN) yield
optimum performance in terms of end-point errors and
linearity for standalone operation of the part. (See the
Specifications section.) If system calibration is required, it is
possible to modify the default offset and gain coefficients to
improve end-point errors, but note that any modification to the
factory set ADCOF and ADCGN values can degrade ADC
linearity performance.
Rev. A | Page 42 of 92
Signal Peak-to-Peak
2.5 V
2.048 V
1.25 V
2.5 V
2.048 V
1.25 V
3.3 V
3.0 V
For system offset error correction, the ADC channel input stage
must be tied to AGND. A continuous software ADC conversion
loop must be implemented by modifying the value in ADCOF
until the ADC result (ADCDAT) reads code 0 to 1. Offset error
correction is done digitally and has a resolution of 0.25 LSB and
a range of ±3.125% of V
REF
.
For system gain error correction, the ADC channel input stage
must be tied to V
REF
. A continuous software ADC conversion
loop must be implemented to modify the value in ADCOF until
the ADC result (ADCDAT) reads code 4094 to 4095. Similar to
the offset calibration, the gain calibration resolution is 0.25 LSB
with a range of ±3% of V
REF
.
TEMPERATURE SENSOR
The ADuC7019/7020/7021/7022/7024/7025/7026/7027 provide
voltage output from on-chip band gap references proportional
to absolute temperature. This voltage output can also be routed
through the front-end ADC multiplexer (effectively an
additional ADC channel input) facilitating an internal
temperature sensor channel, measuring die temperature to an
accuracy of
±
3
°
C.
BAND GAP REFERENCE
Each ADuC7019/7020/7021/7022/7024/7025/7026/7027
provides an on-chip band gap reference of 2.5 V, which can be
used for the ADC and DAC. This internal reference also
appears on the V
REF
pin. When using the internal reference, a
0.47
μ
F capacitor must be connected from the external V
REF
pin
to AGND to ensure stability and fast response during ADC
conversions. This reference can also be connected to an external
pin (V
REF
) and used as a reference for other circuits in the
system. An external buffer is required because of the low drive
capability of the V
REF
output. A programmable option also
allows an external reference input on the V
REF
pin.
REFCON Register
Name
REFCON
Address
0xFFFF048C
Default Value
0x00
Access
R/W
The band gap reference interface consists of an 8-bit MMR
REFCON described in Table 18.
Table 18. REFCON MMR Bit Designations
Bit
Description
7:2
Reserved.
1
Internal Reference Power-Down Enable.
Set
by user to
place the internal reference in power-down mode and
use as an external reference.
Cleared
by user to place
the internal reference in normal mode and use it for
ADC conversions.
0
Internal Reference Output Enable.
Set
by user to
connect the internal 2.5 V reference to the V
REF
pin. The
reference can be used for external component but
needs to be buffered.
Cleared
by user to disconnect
the reference from the V
REF
pin.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADV101 | Circular Connector; No. of Contacts:6; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Socket; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-35 |
| ADV101KN30 | Circular Connector; No. of Contacts:4; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-44 |
| ADV101KN50 | Circular Connector; No. of Contacts:4; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Socket; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-44 |
| ADV101KN80 | Circular Connector; No. of Contacts:6; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-6 |
| ADV101KP30 | Circular Connector; No. of Contacts:3; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:9-98 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADUX1020BCPZRL7 | 功能描述:Optical Sensor Ambient, Gesture 960nm I2C 8-WFDFN Exposed Pad 制造商:analog devices inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:環(huán)境，手勢 波長:960nm 接近探測:是 輸出類型:I2C 電壓 - 電源:1.8 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WFDFN 裸露焊盤 供應(yīng)商器件封裝:8-LFCSP（2x3） 標(biāo)準(zhǔn)包裝:1 |
| ADUX1020-EVAL-SDP | 功能描述:ADUX1020 - Light and Proximity Sensor Evaluation Board 制造商:analog devices inc. 系列:- 零件狀態(tài):有效 傳感器類型:光線和近程 感應(yīng)范圍:- 接口:I2C 靈敏度:- 電壓 - 電源:- 嵌入式:- 所含物品:3 個板，線纜 使用的 IC/零件:ADUX1020 標(biāo)準(zhǔn)包裝:1 |
| ADUX1020-EVALZ-LED | 功能描述:ADUX1020 - Interface Board 制造商:analog devices inc. 系列:- 零件狀態(tài):有效 配件類型:接口板 配套使用產(chǎn)品/相關(guān)產(chǎn)品:ADUX1020 標(biāo)準(zhǔn)包裝:1 |
| ADV001-00E | 制造商:RHOPOINT 制造商全稱:RHOPOINT COMPONENTS 功能描述:ADV Sensors |
| ADV001-10E | 制造商:RHOPOINT 制造商全稱:RHOPOINT COMPONENTS 功能描述:ADV Sensors |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。