Notes

A. Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document.

B. Electrical specifications and performance data contained in this specification document are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions.

C. The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled

to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp

50

Digital Step Attenuator

Precision

TOAT-124+

CASE STYLE: QQ96

Outline Dimensions (

)

inch

mm

Maximum Ratings

Pin Connections

Features

Operating Temperature

-55°C to 100°C

Storage Temperature

-55°C to 125°C

Input Power

15 dBm

DC Voltage

5.5 V

TTL

5.5V

Outline Drawing

Digital Step Attenuator Electrical Specifications

REV. C

M151107

TOAT-124+

DJ/VV/CP

151008

• wideband, 10 to 1000 MHz

• excellent step accuracy, 0.2 dB typ.

• excellent VSWR 1.3 typ.

• low DC current, 6 mA typ.

• hermetic, metal, TO-8 case

MODEL

NO.

FREQUENCY

(MHz)

PRIMARY ATTENUATION STEPS

(dB)

@TTL CONTROL PORT

ATTENUATION

(dB)

VSWR

(:1)

f

L

f

U

#1

#2

#3

(1,1,1)**

Nom.

(0,0,0)

Max.

L

M

U

TOAT-124+

10

1000

1±0.25

2±0.25

4±0.3

7.0

4.0

1.6

1.4

1.5

Applications

• base stations

• cellular

• test-sets

• military, hi-rel application

** Total attenuation above thru-loss.

1. Step accuracy is specified for basic steps. For combination of steps accuracy is additive.

2. Thru-loss is minimum insertion loss with all attenuation elements bypassed (All TTL controls state are Low)

3. For optimum operation of TOAT models, ensure the device case is properly connected to the ground plane (of PC board)

Additional Specifications

DC Voltage

+5V

DC Current

12mA max.

Switching Time (50% TTL to within specified

accuracy of the next-selected attenuation step,

and to within 0.1 dB of steady-state Thru-Loss)

10µs typ., 15µs max.,

TTL Input High Threshold

2V min

TTL Input Low Threshold

0.8V max.

TTL Toggle Rate

50 kHz typ.

1dB Compression

0 dBm (10-100 MHz)

+10 dBm (100-1000MHz)

L=10 to 100 MHz

M=100 to 500 MHz

U=500 to 1000 MHz

RF IN

4

RF OUT

11

TTL CONTROL #1

2

TTL CONTROL #2

3

TTL CONTROL #3

1

+5V DC

12

CASE GROUND

5,6,7,8,9,10

A

BC

D

E

F

.600

.250

.25

.016

.020

.04

15.24

6.35

6.35

0.41

0.51

1.02

GH

J

K

wt

.400

.200

.200

.100

grams

10.16

5.08

5.08

2.54

4.0

Electrical Schematic

inch

mm

Permanent damage may occur if any of these limits are exceeded.

+RoHS Compliant

The +Suffix identifies RoHS Compliance. See our web site

for RoHS Compliance methodologies and qualifications