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PDF BH1900NUX Data sheet ( Hoja de datos )
| Número de pieza | BH1900NUX | |
| Descripción | Digital Temperature Sensor IC | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
Digital Temperature Sensor IC
BH1900NUX
General Description
The BH1900NUX is a digital temperature sensor IC
equipped with a two-wire serial interface. It’s small
package, so it can be placed near the component which
temperature is measured.
This device has 3 address pins and it allows to connect
8 devices on one bus.
Key Specifications
Supply Voltage Range:
2.7V to 3.6V
Temperature Accuracy(-20°C to +85°C): ±3.0°C
Operating Current:
75μA (Typ)
Shutdown Current:
1μA (Typ)
Operating Temperature Range: -30°C to +95°C
Features
Digital Output: Two-wire Serial Interface.
8 Addresses.
Thermostat Mode.
Small package.
Package
VSON008X2030
W(Typ) x D(Typ) x H(Max)
2.00mm x 3.00mm x 0.60mm
Applications
Smart phone, Tablet, LCD TV, notebook PC,
portable game machine, and digital camera.
Typical Application Circuit
VSON008X2030
Host
SDA
SCL
ALERT
VDD
BH1900NUX
GND
A0
A1
A2
When address pins are A2=L, A1=L, A0=H.
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
1/18
TSZ02201-0M2M0F516010-1-2
26.Apr.2016 Rev.001
1 page  
BH1900NUX
Recommended Operating Conditions (Ta= -30°C to +95°C)
Parameter
Symbol Min
Typ
Power Supply Voltage
VDD 2.7 3.3
Max Units
3.6 V
Electrical Characteristics (Unless otherwise specified VDD=3.3V, Ta=25°C)
Parameter
Symbol Min Typ Max Units
Conditions
Temperature Accuracy
Et
-3.0
-
+3.0
°C Ta=-20°C to +85°C
Resolution
RES - 0.0625 - °C/LSB
Oscillator Frequency
FOSC 470 750 - kHz
Conversion time
TAD - 22 35 ms
Operating Current
IDD - 75 150 µA In Non-communication
Shutdown Current
ISS - 1 5 µA
L Input Voltage (SDA, SCL)
VIL - - 0.54 V
H Input Voltage (SDA, SCL)
VIH 1.26 -
-V
L Input Voltage2 (A0, A1, A2)
VIL2
-
-
0.3*VDD
V
H Input Voltage2 (A0, A1, A2)
VIH2
0.7*VDD
-
-V
Input Leakage Current
IIL -10 - +10 µA
Digital Output Voltage (SDA, ALERT)
VOL
0
- 0.4 V IOL=3mA
Caution: A characteristic of the IC might change heating during reflow soldering. When high temperature accuracy is required, correction should be done after
assembly.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
5/18
TSZ02201-0M2M0F516010-1-2
26.Apr.2016 Rev.001
5 Page 
BH1900NUX
Thermostat mode
When the consecutive measurement temperature value exceeds the value in THIGH Limit, the device becomes interrupt and
the ALERT pin becomes active. The number of consecutive times is set in FAULT QUEUE.
Interrupt is released when any of below action is taken.
・The device becomes shut down mode.
・Temperature Data or ALERT is read.
・Measurement temperature value falls below the value in TLOW Limit consecutively over same times as FAULT QUEUE.
Device Status
Active
Shut Down
Active
Ambient
Temperature
ALERT PIN
(POL=0)
Measurement
Timing
Conversion
time
SD=1
Write timing
SD=0
Write timing
Temperature Data or ALERT
Read timing
Figure 4. Comparator Mode Action Sequence
(Consecutive times = 2times)
THIGH Limit
TLOW Limit
Time
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
11/18
TSZ02201-0M2M0F516010-1-2
26.Apr.2016 Rev.001
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet BH1900NUX.PDF ] | |
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