Attn-Switched-Bit

UMCC

Switched Bit Attenuators

Fast Switching Time

Low Harmonic Distortion

Single Attenuation Bit to Five Attenuation Bits

All equipped with TTL Driver
Custom Makes Available / Consult Factory

- Specifications are subject to change without notice

- Click on the product model number for Specifications-Sheet in PDF
- Click on "

" to see the actual response curves (subject to availability)

UMCC offers this selection of pin-diode switch-Bit attenuators in wide bandwidths and high speed switching response time. Attenuators are available on special order to fit your specific application. All units are equipped with a high speed TTL driver. Each attenuation bit is controlled by one complementary (toggle) driver ckt and controlled via a single TTL/CMOS compatible command signal..
RF Circuit	TTL Driver

Model No.	Frequency Range (GHz)	Insertion Loss (dB) Max	VSWR Max	Rise/Fall Time (1) Max	On/Off Time (2) Max	Attenuation Flatness (dB) Peak-Peak			Outline Drawing
Model No.	Frequency Range (GHz)	Insertion Loss (dB) Max	VSWR Max	Rise/Fall Time (1) Max	On/Off Time (2) Max	10dB	20dB	31dB	Outline Drawing
AS-H500-31S	1 - 6	4.7	1.7:1	20 ns	60 ns	0.5	0.7	0.9	Fig.1
AS-L500-31S	2 - 8	5.5	1.6:1	15 ns	50 ns	0.6	0.8	1.0
AS-M500-31S	4 - 10	6.5	1.7:1	15 ns	50 ns	0.7	0.9	1.2
1) [ 10% RF Power to 90% RF Power (Rise Time) ] <> [ 90% RF Power to 10% RF Power (Fall Time) ] 2) [ 50% Command signal to 90% RF Power (ON Time) ] <> [ 50% Command signal to 10% RF Power (OFF Time) ]

Common Specifications (All Standard 5-Bit Models):
Attenuation Range (Nominal):		31dB

Number of Bits:		5
Resolution (LSB):		1dB (B0=1dB, B1=2dB, B2=4dB, B3=8dB, B4=16dB)

Attenuation Accuracy (Mean Attenuation):
	1- 10 dB	±0.75 dB Max
	>10- 31 dB	±1.25 dB Max

Power Rating (Operating):		+27 dBm CW/AVG <> 8W Peak, 1µS PW

Harmonic Distortion:		60dBc Min

Control Input Characteristics:		TTL / Unit-Load / Flouting-High (Logic "1")
Control Logic:		Logic "0" = Bit "OFF" (Low Loss)
		Logic "1" = Bit "ON" (Attenuation)

Power Supplies:		+5(±0.25)V @ 150mA Max
		-5(±0.25)V @ 150mA Max

Impedance (RF Path):		50 Ω

Connectors:
	- RF Input / Output	SMA (female), Removable
	- Supply and Control	Solder Pins

Environmental Ratings:
Temperature:
	- Operating	-55° C to +95°C
	- Storage	-60° C to +110°C
Humidity:		Mil-STD-202F, Method 103B Condition B
Shock:		Mil-STD-202F, Method 213B Condition B
Vibration:		Mil-STD-202F, Method 204D Condition B
Altitude:		Mil-STD-202F, Method 105C Condition B
Temp. Cycle:		Mil-STD-202F, Method 107D Condition B


Available Options:
1) units with options listed here may be subject to some specification tradeoffs from the standard, consult factory 2) units with options listed here may be subject to lower or higher cost than the standard units. 3) Some options may not be available on all models, consult factory

RF Connectors		Other Options (Consult Factory)
	B1 [ J1 SMA(M) ]		- Other Attenuation Range and Steps (5-Bits Max , LSB>1dB)
	B2 [ All SMA (M) ]		- Etc.