参数资料
| 型号： | DS3911T+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC DAC 10BIT I2C QUAD 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 位数： | 10 |
| 数据接口： | I²C，串行 |
| 转换器数目： | 4 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 1.74W |
| 工作温度： | -40°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x5） |
| 包装： | 管件 |
| 输出数目和类型： | 4 电压，单极 |
| 采样率（每秒）： | * |
DS3911
Temperature-Controlled, Nonvolatile,
I2C Quad DAC
18
Maxim Integrated
Lower Memory, Register 03h: TINDEX
Lower Memory, Register 04h–05h: TEMP VALUE
POWER-ON VALUE
0000h
ACCESS
R
MEMORY TYPE
Volatile
04h
S
26
25
24
23
22
21
20
05h
2-1
2-2
2-3
2-4
0
BIT 7
BIT 0
Left-justified signed two’s complement direct-to-temperature measurement. The lower 4 bits always return zero.
The temperature reading is clamped to -128NC and +127.9375NC.
POWER-ON VALUE
00h
ACCESS
When AEN = 1: R
ACCESS
When AEN = 0: R/W
MEMORY TYPE
Volatile
03h
27
26
25
24
23
22
21
20
BIT 7
BIT 0
The TINDEX register is the temperature indexed address pointer. The TINDEX value corresponds directly to the
LUT memory address for the given temperature ranges. The DAC OFFSET address is calculated based on the
TINDEX value, so only one pointer is necessary.
The pointer value is calculated based on the current temperature reading (see the below equation). The calculation
uses different math depending on which LUT range (2NC or 4NC) the current temperature measurement resides in.
temp 56
Temperature 40
Temperature 8
TINDEX
128
4
2
<≥
+
=
+=
+
A 1NC hysteresis is implemented in the TINDEX value calculation by adding 1NC to temperature changes of nega-
tive slope.
When the AEN bit is high, the TINDEX register is read-only and the pointer is updated after the temperature and
voltage conversions have completed. When the AEN bit is cleared, I2C writes to the TINDEX register are enabled
and updates from the LUT controller are blocked. The register can be used to force DAC updates to be based
on the user-selected index. The TINDEX register directly addresses the LUT memory locations by dropping
TINDEX[7] and forcing it high. When AEN = 0, any address between 80h and FFh can be addressed. To obtain
known results in the DAC VALUE register, TINDEX should be kept between 80h and AFh.
TINDEX value is clamped for temperatures below -40NC and above 102NC.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3911T+ | 功能描述:ADC / DAC多通道 Fast APD Bias RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| DS3911T+T | 功能描述:ADC / DAC多通道 Fast APD Bias RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40 |
| DS3920 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Fast Current Mirror |
| DS3920_1112 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Fast Current Mirror |
| DS3920T-001+ | 功能描述:电流和电力监控器、调节器 Fast APD Bias RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
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