ZMDI's ZSSC3170 is an automotive sensor signal conditioner with integrated pulse width modulation interface. It has a maximum analog gain of 420 and has extended offset compensation. The device is compatible with Lin specifications 1.3 / 2.0 / 2.1, data conversion rate up to 430Hz, power supply voltage 7-18V, ADC resolution 13-14 bits, output resolution up to 12 bits, and sleep mode current consumption is less than 100uA. This article introduces the main features of ZSSC3170, the block diagram and various application circuits.
ZSSC3170: Automotive sensor signal conditioning and LIN and PWM interface
The ZSSC3170 is a CMOS high-precision amplifier circuit and sensor integrated sensor signal bridge specific correction. Equipped with a maximum analog gain of 420, as well as offset compensation function, ZSSC3170 is adjustable, almost all resistance bridge sensor types.
Digitally compensated offset, sensitivity, temperature drift and nonlinearity are accomplished through a 16-bit RISC microcontroller. The adjustment factor is stored in an EEPROM certified for automotive applications.
The measured value is one of the digital forest or PWM interface. Each interface can support end-to-end online calibration using the output of the sensor. The sensitivity of noise is greatly reduced because the calibration equipment and ZSSC3170 are mated digitally.
To quickly and easily support the evaluation and calibration of prototypes, ZMDI South-South Cooperation provides the ZSSC3170 evaluation kit, which includes evaluation hardware, SSOP20 samples and software.
Main features of ZSSC3170:
Conforms to specifications 1.3 / 2.0 / 2.1
Configurable framework content publisher Lin
Data conversion rate up to 430Hz makes full use of forest channel capacity up to 20kbit / s
PWM high-side and low-side switches, LIN communication supports end-of-line calibration
Digital offset, gain compensation, temperature affect the second order, to third-order nonlinearity. Temperature compensates for sensor offset, gain and nonlinearity up to the second order.
Internal or external temperature reference
Media diode or RTD temperature sensing
Load LIN dump to a protection pin ± 40V
Operating temperature range: -40 ℃ to 125A
Extended operating temperature range: A ‰ ¤ 150A type ℃
Accuracy
3 EEPROM data that can be used at will
Lithium Ion Battery For Electric Golf Cart
Advantages of Lithium Golf Batteries
Lithium golf batteries (or LiFePO4 batteries) have been around for a while now on electric golf buggies, but until recently have been quite expensive. Most brands now including MGI Golf, Autocaddy, Motocaddy and Powakaddy come standard with lithium ion batteries. But not only can you get a lithium battery for a new golf buggy, there are suppliers providing them for older buggies by running on the same voltage as a lead acid battery.
Below is a breakdown of the advantages of a lithium golf battery over their lead acid counterparts:
Greater life expectancy
The main advantage of a lithium battery is the life expectancy. Whilst a lead acid battery will last around 300 cycles, a lithium battery can last up to 5000 cycles, meaning over the life of the battery a lithium is more cost effect per round of golf. Lithium batteries are maintenance free and have the benefit of a control board built in, thus ensuring worry free golfing.
Light weight
Another advantage is in the weight of the battery. A lithium battery weights on average 5 times less than a similar amp-hour lead acid battery. This makes it easier to lift making it easier to transport to other golf courses. The lighter weight also puts less strain on your buggy and therefore less wear and tear over time. This will improve the life of your buggy and mean less repairs will be required.
Short Charge Times
Charging times are also reduced when using lithium batteries over lead acid. Whilst it can take over 8 hours to charge a lead acid battery, a lithium battery can be fully charged in less than 3 hours. Lithium batteries are also able to be left off charge for longer periods of time compared to a lead acid battery. Once fully charged your lithium battery can be left off charge for up to 3 months before any damage occurs, whilst a lead acid battery will start to sulphide within 3 weeks.
Low Maintenance
Lithium batteries (Li-Ion batteries) require less maintenance than most forms of batteries. Other batteries, such a lead acid, require a periodic discharge to maintain the battery memory. This is not required for Lithium batteries, which can be left off charge for up to 3 months (once fully charged).
Lithium batteries also do not require topping up, like older forms of lead acid batteries. This means there is less maintenance required and less that can go wrong.
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