Document
Agilent HSMS-285x Series Surface Mount Zero Bias Schottky Detector Diodes Data Sheet
Features
• Surface Mount SOT-23/ SOT-143 Packages
Description
Agilent’s HSMS-285x family of zero bias Schottky detector diodes has been designed and optimized for use in small signal (Pin < -20 dBm) applications at frequencies below 1.5 GHz. They are ideal for RF/ID and RF Tag applications where primary (DC bias) power is not available. Important Note: For detector applications with input power levels greater than –20 dBm, use the HSMS-282x series at frequencies below 4.0 GHz, and the HSMS-286x series at frequencies above 4.0 GHz. The HSMS-285x series IS NOT RECOMMENDED for these higher power level applications. Available in various package configurations, these detector diodes provide low cost solutions to a wide variety of design problems. Agilent’s manufacturing techniques assure that when two diodes are mounted into a single package, they are taken from adjacent sites on the wafer, assuring the highest possible degree of match.
Pin Connections and Package Marking
1 2 3 6 5 4
• Miniature SOT-323 and SOT-363 Packages • High Detection Sensitivity: up to 50 mV/µW at 915 MHz • Low Flicker Noise: -162 dBV/Hz at 100 Hz • Low FIT (Failure in Time) Rate* • Tape and Reel Options Available • Matched Diodes for Consistent Performance • Better Thermal Conductivity for Higher Power Dissipation • Lead-free Option Available
* For more information see the Surface Mount Schottky Reliability Data Sheet.
Notes: 1. Package marking provides orientation and identification. 2. See “Electrical Specifications” for appropriate package marking.
SOT-23/SOT-143 Package Lead Code Identification (top view)
SINGLE 3 SERIES 3
PLx
#0 2 1 UNCONNECTED PAIR 3 4 1 #5 2
1
#2
2
Attention: Observe precautions for handling electrostatic sensitive devices.
ESD Machine Model (Class A) ESD Human Body Model (Class 0) Refer to Agilent Application Note A004R: Electrostatic Discharge Damage and Control.
SOT-363 Package Lead Code Identification (top view)
UNCONNECTED TRIO
6 5 4 6
SOT-323 Package Lead Code Identification (top view)
SINGLE 3 SERIES 3
BRIDGE QUAD
5 4
1
2
L
3
1
2
P
3
1
B
2
1
C
2
2
SOT-23/SOT-143 DC Electrical Specifications, TC = +25°C, Single Diode
Part Package Number Marking Lead HSMSCode Code
2850 2852 2855 Test Conditions P0 P2 P5 0 2 5
Configuration
Single Series Pair [1,2] Unconnected Pair [1,2]
Maximum Forward Voltage VF (mV)
150 250
Maximum Reverse Leakage, IR (µA)
175
Typical Capacitance CT (pF)
0.30
IF = 0.1 mA IF = 1.0 mA
VR=2V
VR = –0.5 V to –1.0V f = 1 MHz
Notes: 1. ∆VF for diodes in pairs is 15.0 mV maximum at 1.0 mA. 2. ∆CT for diodes in pairs is 0.05 pF maximum at –0.5 V.
SOT-323/SOT-363 DC Electrical Specifications, TC = +25°C, Single Diode
Part Number HSMS285B 285C 285L 285P Test Conditions
Package Marking Code
P0 P2 PL PP
Lead Code
B C L P
Configuration
Single Series Pair Unconnected Trio Bridge Quad
Maximum Forward Voltage VF (mV)
150 250
Maximum Reverse Leakage, IR (µA)
175
Typical Capacitance CT (pF)
0.30
IF = 0.1 mA
IF = 1.0 mA
VR=2V
VR = 0.5 V to –1.0V f = 1 MHz
Notes: 1. ∆VF for diodes in pairs is 15.0 mV maximum at 1.0 mA. 2. ∆CT for diodes in pairs is 0.05 pF maximum at –0.5 V.
RF Electrical Specifications, TC = +25°C, Single Diode
Part Number HSMS2850 2852 2855 285B 285C 285L 285P Test Conditions Typical Tangential Sensitivity TSS (dBm) @ f = 915 MHz –57 Typical Voltage Sensitivity Typical Video γ (mV/ µW) @ f = 915 MHz Resistance RV (KΩ) 40 8.0
Video Bandwidth = 2 MHz Zero Bias
Power in = –40 dBm RL = 100 KΩ, Zero Bias
Zero Bias
3
Absolute Maximum Ratings, TC = +25°C, Single Diode
Symbol PIV TJ TSTG TOP θ jc Parameter Peak Inverse Voltage Junction Temperature Storage Temperature Operating Temperature Thermal Resistance[2] Unit V °C °C °C °C/W Absolute Maximum[1] SOT-23/143 SOT-323/363 2.0 150 -65 to 150 -65 to 150 500 2.0 150 -65 to 150 -65 to 150 150 ESD WARNING: Handling Precautions Should Be Taken To Avoid Static Discharge.
Notes: 1. Operation in excess of any one of these conditions may result in permanent damage to the device. 2. TC = +25°C, where TC is defined to be the temperature at the package pins where contact is made to the circuit board.
Equivalent Linear Circuit Model
HSMS-285x chip
Rj RS
SPICE Parameters
Parameter BV CJ0 EG I BV IS Units V pF eV A A Ω V HSMS-285x 3.8 0.18 0.69 3 E -4 3 E-6 1.06 25 0.35 2 0.5
Cj
N RS PB (VJ) PT (XTI) M
RS = series resistance (see Table of SPICE parameters) C j = junction capacitance (see Table of SPICE parameters) Rj = 8.33 X 10-5 nT Ib + Is
where Ib = externally applied bias current in amps Is = saturation current (see table of SPICE parameters) T = temperature, °K n = ideality factor (see table of SPICE parameters) Note: To effectively model the packaged HSMS-285x product, please refer to Application Note AN1124.
4
Typical Parameters, Single Diode
100
IF – FORWARD CURRENT (mA) 10000 RL = 100 KΩ 1000
VOLTAGE OUT (mV) .