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參數資料
| 型號： | EVAL-AD7156EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 14/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD7156 |
| 標準包裝： | 1 |
| 傳感器類型： | 觸摸，電容式 |
| 接口： | I²C |
| 電源電壓： | 1.8 V ~ 3.6 V |
| 嵌入式： | 否 |
| 已供物品： | 板，CD |
| 已用 IC / 零件： | AD7156 |
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AD7156
Rev. 0 | Page 21 of 28
POWER-DOWN TIMER REGISTER
Address Pointer 0x10
8 Bits, Read/Write, Factory Preset 0x40
Table 14. Power-Down Timer Register Bit Map1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Power-down timeout (6-bit value)
(0)
(1)
(0x00)
1 The default values are given in parentheses.
Table 15.Power-Down Timer Register Bit Descriptions
Bit
Mnemonic
Description
7
This bit must be 0 for proper operation.
6
This bit must be 1 for proper operation.
[5:0]
Power-down
timeout
This bit defines the period duration of the power-down timeout.
If the comparator outputs have not been activated during the programmed period, the part enters power-down
mode automatically. The part can be then returned to a normal operational mode either via the serial interface
or by the power supply off/on sequence.
The period is programmable in steps of 4 hours. For example, setting the value to 0x06 sets the duration to 24
hours. The maximum value of 0x3F corresponds to approximately 10.5 days.
The value of 0x00 disables the power-down timeout, and the part does not enter power-down mode automatically.
CAPDAC REGISTERS
Ch 1 Address Pointer 0x11
Ch 2 Address Pointer 0x12
8 Bits, Read/Write, Factory Preset 0xC0
Table 16. CAPDAC Registers Bit Map1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
DacEn
DacAuto
DacValue (6-bit value)
(1)
(0x00)
1 The default values are given in parentheses.
Table 17. CAPDAC Registers Bit Descriptions
Bit
Mnemonic
Description
7
DacEn
DacEn = 1 enables capacitive the DAC.
6
DacAuto
DacAuto = 1 enables the auto-DAC function in the adaptive threshold mode.
When the auto-DAC function is enabled, the part dynamically adjusts the CAPDAC to keep the CDC in an
optimal operating capacitive range. The CAPDAC value is automatically incremented when the data average
exceeds of the CDC full range, and the CAPDAC value is decremented when the data average goes below
of the CDC full range. The auto-DAC increment or decrement step depends on the selected CDC capacitive
input range.
This bit has no effect in fixed threshold mode; the auto-DAC function is always disabled in the fixed threshold mode.
[5:0]
DacValue
CAPDAC value, Code 0x00 ≈ 0 pF, Code 0x3F ≈ CAPDAC full range.
SERIAL NUMBER REGISTER
Address Pointer 0x13, Address Pointer 0x14, Address
Pointer 0x15, Address Pointer 0x16
32 Bits, Read Only, Factory Preset 0xXXXX
This register holds a serial number, unique for each individual part.
CHIP ID REGISTER
Address Pointer 0x17
8 Bits, Read Only, Factory Preset 0xXX
This register holds the chip identification code, used in factory
manufacturing and testing.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| EVAL-AD7156EBZ | 制造商:Analog Devices 功能描述:EVAL BOARD, AD7156 2CH CAPACITANCE CONVE |
| EVAL-AD7170EBZ | 功能描述:BOARD EVAL FOR AD7170 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數轉換器 (ADC) 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數量:1 位數:12 采樣率（每秒）:94.4k 數據接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| EVAL-AD7171EBZ | 功能描述:BOARD EVAL FOR AD7171 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數轉換器 (ADC) 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數量:1 位數:12 采樣率（每秒）:94.4k 數據接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
| EVAL-AD7173-8SDZ | 制造商:Analog Devices 功能描述:EVAL BOARD MULTI CHANNEL - Boxed Product (Development Kits) |
| EVAL-AD7175-8SDZ | 功能描述:AD7175-8 - 24 Bit 250k Samples per Second Analog to Digital Converter (ADC) Evaluation Board 制造商:analog devices inc. 系列:- 零件狀態(tài):有效 A/D 轉換器數:1 位數:24 采樣率（每秒）:250k 數據接口:并聯 輸入范圍:±VREF 不同條件下的功率（典型值）:105mW @ 250kSPS 使用的 IC/零件:AD7175-8 所含物品:板，電源 標準包裝:1 |
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