chipcap General Electric Company, chipcap Datasheet - Page 2

• Manufacturer Part Number: chipcap
• Description: The Fully Calibrated Humidity And Temperature Solution
• Manufacturer: General Electric Company

ChipCap The Fully Calibrated
Humidity and Temperature Sensor
The ChipCap series humidity sensor by GE o ers a
new standard in the fi eld of accurate relative humidity
measurement. Based on a capacitive polymer sensing
technology, this device o ers signal conditioning and
temperature compensation for a single SoC (Systemon-
Chip) solution. The device is very simple to use, fully
tested and calibrated for accuracy on delivery no
further calibration is needed. ChipCap can be
incorporated into an assembly or fi nished sensor to meet
customer specifi cations. The measurement is accurate
to ±2% from 20% to 80% RH and ±3% across the entire
humidity range. Long term stability is excellent. The
temperature accuracy is ±1°C from 0°C to +70°C. Dual
outputs provide humidity and temperature as 0V to 1V,
or 0.5V to 4.5V ratiometric or available with digital output
(the ZACwire one-wire interface).
Accurate, Repeatable Humidity and
Temperature Measurement
ChipCap provides either analog or digital interfaces
on a single, 5VDC-powered chip. The package is highly
resistant to chemical vapors and other contaminants.
ChipCap sensors are precalibrated and o er high
interchangeability. They also fully recover from
condensing environments and may be used across a
wide range of both temperature and relative humidity
ranges.
ChipCap relative humidity sensors change capacitance
in direct proportion to ambient relative humidity. An
internal solid-state band gap provides temperature
measurement. This integral design reduces overall cost
and complexity and improves reliability.
9.5 ±0.07 mm
6.00 ±0.02 mm
3.22 ±0.10 mm
Small, Integrated Package for
Automated Assembly
ChipCap contains the entire signal conditioning circuitry
on a single silicon die. The sensor and circuitry are
integrated into a small footprint SoC to save board
real estate. ChipCap is shipped in tube packaging for
automated insertion on surface mount technology (SMT)
circuit boards. Tape and reel packaging is available upon
request for high volume applications.
Linear mode:
%RH = Vout * 100
Tc = Vout * 200 -50
Ratiometric mode:
%RH = ((Vout - (0.1 * Vsupply))/(0.8 * Vsupply)) * 100
Tc = ((Vout - (0.1 * Vsupply))/(0.8 * Vsupply)) * 200 - 50
RH Output
Temp Output
μC
10
11
12
13
14
8
9
NC
NC
NC
V+
NC
NC
OUT-RH
10
11
12
13
14
Analog Interface
Digital Interface
8
9
ChipCap
NC
NC
NC
V+
NC
NC
OUT-RH
Sensor
RH
ChipCap
Sensor
RH
GND
NC
NC
NC
NC
NC
NC
GND
NC
NC
NC
NC
NC
NC
7
6
5
4
3
2
1
7
6
5
4
3
2
1
0.1μ
Gnd
V
3V to 5.5V
0.1μ
Gnd
supply
V
3V to 5.5V
supply