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Quad Bias Driver for GaAs FET and PIN Diode Switches
Description
The MADRMA0001 family of quad bias drivers can either be configured to translate TTL signals into the negative voltages required for GaAs FET switches or attenuators or they can be used to produce up to ± 40 mA per channel for biasing series or shunt PIN diode switches. Each channel contains Inverting and Non-Inverting Outputs for logic flexibility. Designed with high-speed CMOS technology, the drivers achieve high performance with very low power dissipation.
MADRMA0001 & 2 MADR-007690-DR0002
Features
• • • • • • • • • •
Propagation Delay less than 25 nS Complementary Outputs High positive and negative output currents True TTL Inputs Low Quiescent Power Dissipation Available in DIE and QFN-20 Surface Mount Package formats Available in Pb-free RoHS compliant package or Sn/Pb plated package for Military applications (No Pure Sn) MADRMA0001: Die MADRMA0002: QFN-20, Tin Plating (Sn, 100%) MADR-007690-DR0002: QFN-20, Tin-Lead Plating (Sn/Pb, 85%/15%)
AC & DC Characteristics Over Guaranteed Operating Temperature Range
Symbol
VIH VIL VOH VOL IIN Rout IOH IOL ICC TPHL, TPLH TTHL, TTLH
Parameter
Input HIGH Voltage Input LOW Voltage Output HIGH Voltage Output LOW Voltage Input Current Output Resistance DC Output Current – HIGH DC Output Current – LOW Quiescent Supply Current Propagation Delay Output Transition Time Delay Skew, Output A to Output B Minimum Pulse Width Maximum PRF
Test Conditions
Units
V V
Min
2.0 -0.8 VOPT – 0.1 — -20
Typ
— — — — 0 40
Max
Vcc 0.8 VEE + 0.1 20 60 40 -40
No Load No Load VIN = VCC or GND Set by external resistors, R2 or R3 Set by external resistors, R2 or R3 VCC = Max, Vin = Vcc or GND –40° C to + 85° C –40° C to + 85° C –40° C to + 85° C
V V µA Ω mA mA µA nS nS nS nS MHz
— — — — 30
— 15 3 3
400 25 6 6
15
1
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.
Quad Bias Driver for GaAs FET and PIN Diode Switches
Absolute Maximum Ratings
Parameter Absolute Maximum VCC - .5V to + 6.0 V VEE - 6.0 V to 0.0 V VOPT Equal to Vcc VCC – VEE 12 V V IN -0.5 V to VCC +0.5 V V OUT VEE to Vcc Iin ± 25 mA Iout ± 50 mA Storage Temperature -65°C to +150°C Operating Temperature -40°C to +85°C
Note: The TTL interface is a CMOS structure. Without Vcc applied, the input will be low impedance. Once Vcc is applied, the driver will function as specified without latching-up.
MADRMA0001 & 2 MADR-007690-DR0002
Guaranteed Input Operating Ranges
Symbol VCC VEE VOPT TA TTL Input Parameter Positive DC Supply Negative DC Supply Output DC Supply Operating Temperature Rise or Fall Time 10% to 90%, 90% to 10% Unit V V V °C nS Min 4.5 -5.5 0.0 -40 — Typical 5.0 -5.0 Max 5.5 -4.5 Vcc +85 500
Note: All voltages are relative to GND.
Switching Waveforms
INPUT C VIN 90% 1.3 V 10% LOGIC 0
Logic Diagram
TF
TR
LOGIC 1
C1
TPHL
90% 50% GND
A1 B1
TPLH
OUTPUT A VOUT
C2
VEE
A2 B2
OUTPUT B
10%
TTLH
TTHL
C3
Note: See Switching Wave Forms for the definition of the switching terms. Supplies must be by-passed with .01 µF Capacitors. Unused inputs must be tied to Ground
A3 B3
Notes:
C4
A4 B4
Truth Table
Input - CX Outputs - AX Output - BX
0 1
VEE VOPT
VOPT VEE
2
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.
Quad Bias Driver for GaAs FET and PIN Diode Switches
MADRMA0001 Outline:
MADRMA0001 & 2 MADR-007690-DR0002
While die pad and package pin numbers are different, the functions remain the same. The back of the die is internally connected to Vee. It must remain isolated from other voltages.
VEE B4 VCC C4 C3 A3 C2 B2 C1 A2 VOPT GND A1 B1 A4 B3
Die Size: 48 x 64 mils Die Thickness: 10 mils max
Assembly Instructions: Die attach: Use non-conductive epoxy. Wirebonding: Bond @ 160 °C using standard ball or thermal compression wedge bond techniques. For DC pad connections, use either ball or wedge bonds.
3
M.