LTC6806HLW#3ZZPBF

LTC6806 is a fuel cell monitor that measures upto 144 series connected fuel cells with a total measurement error of less than 15mV. It includes 36 input channels, each with a ±5V measurement range allowing each channel to measure from 1 to 4 series-connected fuel cells. All 36 inputs can be measured within 6.75ms in fast ADC mode. Lower data acquisition rates can be selected for high noise reduction. Each device has an isoSPI interface for high speed, RFimmune, long distance communications. Two communication modes are available by pin selection: in daisy-chain mode, multiple devices are connected in a daisy chain with one host processor connection for all devices; in parallel mode, multiple devices are connected in parallel to the host processor, with each device individually addressed. It is used in application such as fuel cell electric and hybrid electric vehicles, backup power systems, high power portable equipment etc.

• Cell stack voltage range is -80V to 150V
• Operates from a single 5V supply
• Stackable architecture supports large fuel cell stacks
• 1MB/s isolated serial communications, uses a single twisted pair, upto 100 meters
• Low EMI susceptibility and emissions, bidirectional for broken wire protection
• Delta-sigma converter with built-in noise filter
• Six general purpose digital I/O or analogue inputs, temperature or other sensor inputs
• 6.75ms typ to measure all cells in a system, 15mV total measurement error
• Supply current is 12µA typ at (sleep mode, serial = OFF, TA = 25°C)
• Operating temperature is -40°C to 125°C, package style is 64-lead plastic LQFP

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