DS1843:Fast Sample-and-Hold Circuit

RSSI Burst-Mode Sample-and-Hold Circuit in 2mm x 2mm µDFN Package

The DS1843 is a sample-and-hold circuit useful for capturing fast signals where board space is constrained. It includes a differential, high-speed switched capacitor input sample stage, offset nulling circuitry, and an output buffer. The DS1843 is optimized for use in optical line transmission (OLT) systems for burst-mode RSSI measurement in conjunction with an external sense resistor.

Key Features
  • Fast Sample Time < 300ns
  • Hold Time > 100µs
  • Low Input Offset
  • Buffered Output
  • Small, 8-Pin µDFN (2mm x 2mm) Pb-Free Package
DS1843: Typical Operating Circuit
DS1843: Typical Operating Circuit
Applications/Uses
  • Gigabit Ethernet Passive Optical Network (GEPON) OLT
  • Gigabit Passive Optical Network (GPON) OLT
  • GPON Optical Network Unit
  • Sample and Hold
DataSheet
titleDownload file
DS1843 Data SheetDS1843.pdf
Parametrics
Part NumberPhoto Diode Appl.IDIODEIDIODEVBIAS
(V)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
minmaxmaxSee Notes
DS1843APD10µA4mA76µDFN/8-40 to +85$0.89 @1k

Part NumberInputsS/H Amps.Output Clamp. DiodesHold Step
(mV)
VOUT
(V)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
maxSee Notes
DS184311No10 to 1µDFN/8-40 to +85$0.89 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • DS1875:PON Triplexer and SFP Controller
  • DS1865:PON Triplexer Control and Monitoring Circuit
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
DS1843D+ActiveµDFN,;8 pin;4.2 mm²0°C to +70°CLead Free
DS1843D+TRLActiveµDFN,;8 pin;4.2 mm²0°C to +70°CLead Free
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