參數(shù)資料
型號(hào)： ADT7466ARQZ-REEL
廠商： ANALOG DEVICES INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： dBCool Remote Thermal Controller and Voltage Monitor
中文描述： SPECIALTY ANALOG CIRCUIT, PDSO16
封裝： LEAD FREE, MO-137AB, QSOP-16
文件頁(yè)數(shù)： 16/48頁(yè)
文件大?。?/td> 1269K
代理商： ADT7466ARQZ-REEL
ADT7466
REFERENCE VOLTAGE OUTPUT
The ADT7466 has a reference voltage of 2.25 V, which is
available on Pin 13 of the device. It can be used for scaling and
offsetting the analog inputs to give different voltage ranges. It
can also be used as an excitation voltage for a thermistor when
the analog inputs are configured as thermistor inputs. See the
Temperature Measurement section for more details.
Rev. 0 | Page 16 of 48
CONFIGURATION OF PIN 11 AND PIN 12
Pin 11 and Pin 12 can be used for analog inputs, thermistor
inputs, or connecting a second remote thermal diode. The
ADT7466 is configured for thermistor connection by default.
The device is configured for the different modes by setting the
Table 9. A-to-D Output Code vs. V
IN
V
CC
3.3 V
V
CC
5 V
<0.0172
<0.026
0.017–0.034
0.026–0.052
0.034–0.052
0.052–0.078
0.052–0.069
0.078–0.104
1.110–1.127
1.667–1.693
2.220–2.237
3.333–3.359
3.3–3.347
5–5.026
4.371–4.388
6.563–6.589
4.388–4.405
6.589–6.615
4.405–4.423
6.615–6.641
>4.423
>6.634
appropriate bits in the configuration registers. Bits 6:7 of
Configuration Register 3 (0x02) configure the device for either
analog inputs or thermistor inputs. Bit 7 of Configuration
Register 2 (0x01) configures Pin 11 and Pin 12 for the
connection of a second thermal diode. Bits 2:3 of Interrupt
Status Register 2 (0x11) indicate either an open or short circuit
on Thermal Diode 1 and Diode 2 inputs. Bits 4:5 of Interrupt
Status Register 2 (0x11) indicate either an open or short circuit
on TH1 and TH2 inputs. It is advisable to mask interrupts on
diode open/short alerts when in thermistor monitoring mode
and to mask interrupts on thermistor open/short alerts when in
REM2 mode.
A
IN
<0.0088
0.0088–0.0176
0.0176–0.0264
0.0264–0.0352
0.563–0.572
1.126–1.135
1.689–1.698
2.218–2.226
2.226–2.235
2.235–2.244
>2.244
Decimal
0
1
2
3
64 ( scale)
128 ( scale)
192 ( scale)
252
253
254
255
Binary
00000000
00000001
00000010
00000011
01000000
10000000
11000000
11111100
11111101
11111110
11111111
Table 10. Mode Configuration Summary
Mode
Thermistor Mode
Configuration
Register Settings
Limits
Alerts
1
Description
Default mode. Mask interrupts on diode NC.
(Set Bits 2:3 of Reg. 0x13.)
TH1
Register 0x02
Bit 7 = 1
Register 0x02
Bit 6 = 1
Low: Reg 0x14
High: Reg 0x15
Low: Reg 0x16
High: Reg 0x17
OOL: Reg. 0x10, Bit 6
NC: Reg. 0x11, Bit 4
OOL: Reg. 0x10, Bit 5
NC: Reg. 0x11, Bit 5
TH2
AIN Mode
Ensure that AFC is not on. (Clear Bits 0:1 of
AFC Configuration Register 1, 0x05.)
AIN1
Register 0x 02
Bit 7 = 0
Register 0x02
Bit 6 = 0
Register 0x01
Bit 7 = 1
Low: Reg 0x14
High: Reg 0x15
Low: Reg 0x16
High: Reg 0x17
Low: Reg 0x14
High: Reg 0x15
OOL: Reg. 0x10, Bit 6
AIN2
OOL: Reg. 0x10, Bit 5
Remote 2 Diode Mode
OOL: Reg. 0x10, Bit 6
NC: Reg. 0x11, Bit 3
Mask interrupts on thermistor NC. (Set
Bits 4:5 of Reg. 0x13) and AIN2 (Bit 5 of
Reg. 0x12.)
1
OOL = Out of limit. NC = No connection.
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