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参数资料
| 型号： | DS1631AU+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/16页 |
| 文件大小： | 435K |
| 描述： | IC THERMOMETER DIG HI-PREC 8USOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 功能： | 温度计，恒温计 |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 125°C |
| 精确度： | ±2°C（最小值） |
| 拓扑： | ADC（三角积分型），比较器，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 无 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
DS1631/DS1631A/DS1731
8 of 15
provides user access to the temperature register. Bits 3 through 0 of the temperature register are
hardwired to 0. When the device is configured for 12-bit resolution, the 12 MSbs (bits 15 through 4) of
the temperature register contain temperature data. For 11-bit resolution, the 11 MSbs (bits 15 through 5)
of the temperature register contain data, and bit 4 is 0. Likewise, for 10-bit resolution, the 10 MSbs (bits
15 through 6) contain data, and for 9-bit the 9 MSbs (bits 15 through 7) contain data, and all unused LSbs
contain 0s. Table 4 gives examples of 12-bit resolution output data and the corresponding temperatures.
Figure 4. TEMPERATURE, T
H
, AND T
L
REGISTER FORMAT
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
MS Byte
S
2
6
2
5
2
4
2
3
2
2
2
1
2
0
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
LS Byte
2
-1
2
-2
2
-3
2
-4
0
0
0
0
Table 4. 12-BIT RESOLUTION TEMPERATURE/DATA RELATIONSHIP
TEMPERATURE
(?/SPAN>C)
DIGITAL OUTPUT
(BINARY)
DIGITAL OUTPUT
(HEX)
+125
0111 1101 0000 0000
7D00h
+25.0625
0001 1001 0001 0000
1910h
+10.125
0000 1010 0010 0000
0A20h
+0.5
0000 0000 1000 0000
0080h
0
0000 0000 0000 0000
0000h
-0.5
1111 1111 1000 0000
FF80h
-10.125
1111 0101 1110 0000
F5E0h
-25.0625
1110 0110 1111 0000
E6F0h
-55
1100 1001 0000 0000
C900h
OPERATIONTHERMOSTAT FUNCTION
The thermostat output (T
OUT
) is updated after every temperature conversion, based on a comparison
between the measured digital temperature and user-defined upper and lower thermostat trip points. T
OUT
remains at the updated value until the next conversion completes. When the measured temperature meets
or exceeds the value stored in the upper trip-point register (T
H
), T
OUT
becomes active and remains active
until the measured temperature falls below the value stored in the lower trip-point register (T
L
) (see
Figure 5). This allows the user to program any amount of hysteresis into the output response. The active
state of T
OUT
is user-programmable through the polarity bit (POL) in the configuration register.
The user-defined values in the T
H
and T
L
registers (see Figure 4) must be in twos complement format
with the MSb (bit 15) containing the sign bit (S). The T
H
and T
L
resolution is determined by the R0 and
R1 bits in the configuration register (see Table 6), so the T
H
and T
L
resolution matches the output
temperature resolution. For example, for 10-bit resolution bits 5 through 0 of the T
H
and T
L
registers read
out as 0 (even if 1s are written to these bits), and the converted temperature is compared to the 10 MSbs
of T
H
and T
L
.
The T
H
and T
L
registers are stored in EEPROM; therefore, they are NV and can be programmed prior to
device installation. Writing to and reading from the T
H
and T
L
registers is achieved using the Access TH
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