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參數(shù)資料
| 型號： | MAX1669 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Fan Controller and Remote Temperature Sensor with SMBus Serial Interface |
| 中文描述： | 風扇控制器及遠端溫度傳感器，帶有SMBus串行接口 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 213K |
| 代理商： | MAX1669 |
M
Fan Controller and Remote Temperature Sensor
with SMBus Serial Interface
12
______________________________________________________________________________________
set to 1111b. The FAN duty factor can be selected from
0% to 100% in increments of 6.67%.
FAN Output in DAC Mode
If the PWM frequency register is set to code 1111b, the
DAC is multiplexed to the FAN output and the FAN duty
factor register (Table 6) now controls the DAC output
voltage rather than the duty factor. In DAC mode, the
output swing is 0 to 0.94
·
V
CC
(out of 4 bits of resolu-
tion). To ensure a smooth transition, make sure that the
FAN duty factor code is 0000b prior to setting the PWM
frequency code for DAC mode (1111b). External cir-
cuitry must accept an initial FAN DAC voltage of 0.
Must be “1”
Reserved for future use
1
0
RFU
Masks I/O1
ALERT
interrupts when high. Set MASK1 = 1 and connect a 10k to 100k
pull-up resistor on I/O1 to configure I/O1 as an output.
MASK1
4
Masks I/O2
ALERT
interrupts when high. Set MASK2 = 1 and connect a 10k to 100k
pull-up resistor on I/O2 to configure I/O2 as an output.
MASK2
3
Enables FAN duty factor override when high.
FAN ON
2
OVERT
pin polarity control:
0 = active low (low when T
CRIT
is crossed)
1 = active high
POL
5
BIT
Standby mode control bit. If high, the device immediately stops converting, forces FAN
low, and enters standby mode. If low, the device continuously autoconverts at a 2Hz rate.
STBY
6
Masks T
HIGH
, T
LOW
, and diode fault
ALERT
interrupts when high. If all three MASK_
bits are set high,
ALERT
interrupts are totally masked.
MASK0
7
(MSB)
FUNCTION
NAME
1
0
0
0
0
0
0
0
POR STATE
Table 4. Configuration Byte Bit Assignments
Table 5. PWM Frequency Data Byte Bit Assignments (Write Command = 1Ah)
Frequency control bit
Reserved for future use
F0
RFU
4
0
0
3–0
Frequency control bit
F1
5
0
0
0
POR STATE
Frequency control bit. F3–F0 are decoded as follows:
F3
–
F0
Frequency (SYNC = GND)
0000b
20Hz
0001b
30Hz
0010b
40Hz
0011b
50Hz
0100b
60Hz
0101b
70Hz
0110b
80Hz
0111b
90Hz
1000b
100Hz
1001b
110Hz
1010b
120Hz
1011b
130Hz
1100b
140Hz
1101b
150Hz
1110b
160Hz
1111b
DAC Mode
Synchronized Frequency (SYNC Clocked)
f
SYNC
/13100
f
SYNC
/8730
f
SYNC
/6550
f
SYNC
/5240
f
SYNC
/4370
f
SYNC
/3740
f
SYNC
/3270
f
SYNC
/2910
f
SYNC
/2620
f
SYNC
/2380
f
SYNC
/2180
f
SYNC
/2020
f
SYNC
/1870
f
SYNC
/1750
f
SYNC
/1640
Frequency control bit
FUNCTION
F3
7 (MSB)
F2
6
NAME
BIT
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1669EEE | 制造商:Maxim Integrated Products 功能描述:FAN CONTROLLER AND REMOTE TEMPERATURE SENSOR - Bulk |
| MAX1669EEE+ | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 16QSOP - Rail/Tube |
| MAX1669EEE+T | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 16QSOP - Tape and Reel |
| MAX1669EEE-T | 制造商:Maxim Integrated Products 功能描述:FAN CONTROLLER AND REMOTE TEMPERATURE SENSOR - Tape and Reel |
| MAX166ACPP | 功能描述:模數(shù)轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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