MACOM AT65-0233TR, AT65-0233-TB, AT65-0233 Datasheet
Digital Attenuator, 30 dB, 4-Bit,
TTL Driver, DC-3.0 GHz
V 5.00
AT65-0233
Features
n Attenuation: 2.0 dB steps to 30 dB
n Low DC Power Consumption
n Integral TTL Driver
n 50 Ohm Impedance
n Temperature Stability: ±0.18 dB from -55°C to +85°C
Typ.
Description
M/A-COM’s AT65-0233 is a GaAs FET 4-bit digital
attenuator with a 2.0 dB minimum step size and a 30 dB
total attenuation range. This device is in a SOIC-16 plastic
surface mount package. The AT65-0233 is ideally suited for
use where accuracy, fast speed, very low power
consumption and low costs are required. Typical
applications include dynamic range setting in precision
receiver circuits and other gain/leveling control circuits.
Electrical Specifications: TA = 25°C
Parameter Test Conditions Frequency Units Min. Typ. Max.
Insertion Loss — DC - 0.5 GHz
SO-16
DC - 2.0 GHz
DC - 3.0 GHz
dB
dB
dB
—
—
—
1.7
2.3
2.6
2.0
2.7
3.1
Attenuation Accuracy
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB Compression Input Power
Input IP
3
Input IP
2
VCC
-VEE
Vctl
Vctl
Input Leakage Current (Low)
Input Leakage Current (High)
Icc VCC = 4.5 to 5.5 V — mA — — 4.0
-Iee VEE = -5.0 to –8.0 V — mA — — -1
Any Bit or Combination of Bits DC - 3.0 GHz dB ± (.4 + 8% of attenuation)
Two-tone inputs up to +5 dBm 0.05 GHz
Two-tone inputs up to +5 dBm 0.05 GHz
Logic (0) TTL
Logic (1) TTL
Full Range DC - 3.0 GHz Ratio — — 1.7:1
10% to 90%
50% Cntl to 90%/10% RF
In-Band
Input Power
—
—
0 to 0.8 V
2.0 to 5.0 V
0.05 GHz
0.5 - 3.0 GHz
0.5 - 3.0 GHz
0.5 - 3.0 GHz
—
—
—
—
—
—
nS
nS
mV
dBm
dBm
dBm
dBm
dBm
dBm
V
V
V
V
µA
µA
—
—
—
—
—
—
—
—
—
4.5
-8.0
0.0
2.0
—
—
10
30
35
+20
+28
+40
+50
+45
+68
5.0
-5.0
—
—
—
—
50
150
—
—
—
—
—
—
—
5.5
-4.75
0.8
5.0
20
20
Digital Attenuator, 30 dB, 4-Bit, TTL Driver, DC - 3.0 GHz
AT65-0233
V 5.00
Pin Configuration
Pin # Function Pin # Function
1 GND 9 C2
2 RF1 10 C1
3 GND 11 GND
4 N/C 12 GND
5 Vee 13 N/C
6 Vcc 14 GND
7 C4 15 RF2
8 C3 16 GND
N/C = No Connection
Truth Table
C1 C2 C3 C4 Attenuation
0 0 0 0 Loss, Reference
1 0 0 0 2.0 dB
0 1 0 0 4.0 dB
0 0 1 0 8.0 dB
0 0 0 1 16.0 dB
1 1 1 1 30.0 dB
Absolute Maximum Ratings
Parameter Absolute Maximum
Max. Input Power
0.05 GHz
0.5 - 3.0 GHz
+Vcc +5.5V
-Vee -8.5V
Control Voltage
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +125°C
1. Operation of this device above any one of these
parameters may cause permanent damage.
2. Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
2
-0.5 to Vcc + 0.5V
1
+27 dBm
+34 dBm
Typical Performance Curves
Typical Insertion Loss (dB)
3
2
Loss (dB)
1
0 = TTL Low; 1 = TTL High
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
Deviation from Nom. Atten. (dB)
0 0.5 1 1.5 2 2.5 3
Frequency (GHz)
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
0
0 0.5 1 1.5 2 2.5 3
Frequency (GHz)
Attenuation Accuracy, 4 dB Attenuation Accuracy, 2 dB
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
Deviation from Nom. Atten. (dB)
0 0.5 1 1.5 2 2.5 3
Frequency (GHz)
2
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