ALPHA AA107-310

Preliminary
GaAs IC 5 Bit Digital Attenuator With
Serial-to-Parallel Driver DC–2 GHz
AA107-310
Features
MLF 5 x 5 (-310)
■ Positive Voltage Operation (+5 V)
0.197 (5.00 mm) BSC
0.039 (1.00 mm) MAX.
PIN 1
0.187
0.001
INDICATOR
(4.75 mm) BSC
(0.025 mm)
32
■ MLF 5 x 5 mm Leadless Package
■ Integrated Silicon Serial-to-Parallel Driver
1
0.197
(5.00 mm)
BSC
0.187
(4.75 mm)
BSC
■ Attenuation 0.5 dB Steps to 15.5 dB
SEATING
PLANE
12˚ MAX.
Description
0.122 (3.10 mm)
± 0.006 (0.15 mm)
The AA107-310 is a GaAs FET IC 5 bit digital attenuator
with a serial-to-parallel driver packaged in a 32 leadless
exposed pad plastic package. It is particularly suited at IF
frequencies where high attenuation accuracy, low insertion
loss and low intermodulation products are required.Typical
applications include base station, wireless and RF data and
wireless local loop gain control circuits.
32
1
0.122 (3.10 mm)
± 0.006 (0.15 mm)
0.138
(3.50 mm) REF.
0.019 (0.50 mm) BSC
0.138 (3.50 mm) REF.
Electrical Specifications at 25°C (VCC = +5 V)
Parameter1
Frequency2
Condition
Insertion Loss3
Typ.
Max.
Unit
DC–1.0 GHz
DC–2.0 GHz
Min.
1.4
1.7
1.7
2.2
dB
dB
DC–1.0 GHz
± (0.2 + 3% of
Attenuation Setting in dB)
± (0.4 + 3% of
Attenuation Setting in dB)
Attenuation Range4, 5
15.5
Attenuation Accuracy4, 5
DC–2.0 GHz
VSWR (I/O)
DC–2.0 GHz
Switching Characteristics6
1.4:1
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Input Power for 1 dB Compression
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
Control Voltages
VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = -5 V @ 300 µA Max.
dB
dB
dB
1.8:1
50
100
50
ns
ns
mV
0.50–2.0 GHz
0.05 GHz
+24
+17
+29
+22
dBm
dBm
0.50–2.0 GHz
0.05 GHz
+44
+35
+50
+40
dBm
dBm
Symbol
Min.
Typ.
Max.
3.5
5.0
0
0.5
DC Electrical Characteristics at 25°C (VCC = +5 V)
Parameter
Input Voltage High
VIH (1)
Input Voltage Low
VIL (0)
Input Leakage Current
Quiescent Current
Supply Voltages
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. DC = 300 kHz.
3. Insertion loss changes by 0.003 dB/°C.
Unit
V
V
IL
±0.5
µA
ICC
500
µA
VCC
5.0
V
4. Attenuation value referenced above insertion loss.
5. Exposed pad must be connected to RF ground to obtain specified attenuation.
6. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 3/01A
1
GaAs IC 5 Bit Digital Attenuator With Serial-to-Parallel Driver DC–2 GHz
AA107-310
Typical Performance Data (VCC = +5 V)
1.5
0
1.4
VSWR
Loss (dB)
-0.5
-1.0
1.3
2 dB
15.5 dB
1.2
8 dB
-1.5
0.5 dB
1.1
4 dB
Ins. Loss
1.0
-2.0
0
0.5
1.0
1.5
0
2.0
0.5
1.0
1.5
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
VSWR vs. Frequency
0.2
Deviation from Nominal
Attenuation (dB)
1 dB
4 dB
0.5 dB
2 dB
Absolute Maximum Ratings
Characteristic
0
Value
Supply Voltage (VCC)
8 dB
-0.2
Input Voltage (VI)
1 dB
-0.5 to +6 V
-0.5 – VCC + 0.5 V
Power Dissipation (PD)
-0.4
15.5 dB
-0.6
2.0
500 mW
Storage Temperature (TST)
-65°C to +125°C
Operating Temperature (TOP)
-40°C to +85°C
-0.8
Surface Mount Land Pattern
-1.0
0.5
0
1.0
1.5
2.0
5 x 5 mm MLF 32 Lead
Frequency (GHz)
0.020 (0.50 mm)
0.013 (0.33 mm)
Attenuation Accuracy vs. Frequency
0.020
(0.50 mm)
Truth Table
Serial Data Input
Reset 0.5 dB 1 dB
2 dB
4 dB
8 dB
J1–J2
Attenuation
1
0
0
0
0
0
Insertion Loss
1
1
0
0
0
0
0.5 dB
1
0
1
0
0
0
1 dB
1
0
0
1
0
0
2 dB
1
0
0
0
1
0
4 dB
1
0
0
0
0
1
8 dB
1
1
1
1
1
1
15.5 dB
0
X
X
X
X
X
Insertion Loss
0.122
(3.10 mm)
SQ.
0.020
(0.50 mm)
0.020 (0.50 mm)
Dimensions in inches (mm).
VIL (0) = 0 to 0.5 V.
VIH (1) = 3.5 to 5 V.
X = Don’t Care.
2
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 3/01A
GaAs IC 5 Bit Digital Attenuator With Serial-to-Parallel Driver DC–2 GHz
RST
GND
GND
GND
J2
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Pin 32
Pin 1
SOUT
GND
GND
GND
J1
GND
GND
GND
VCC
0.01 µF
C1
C2
0.025
µF
GND
VSS
0.01 µF
SCK
SDA
LE
Pin Out
AA107-310
Pin
Symbol
Function
1
SOUT
Serial Data Output
2–4
GND
Ground
5
J1
RF Input/Output
6–19
GND
Ground
20
J2
RF Input/Output
21–23
GND
Ground
24
RST
Reset
25
LE
Latch Enable
26
SDA
Serial Data Input
27
SCK
Serial Clock Input
28
VSS
Low Output Voltage Level
29
GND
Ground
30
C2
Charge Pump Capacitor
31
C1
Charge Pump Capacitor
32
VCC
Supply Voltage
Timing Diagram
LE
SCK
SDA
T1
T2
Parameter
T3
T5
T4
Symbol
Min.
Typ.
Max.
Unit
LE Setup Time
T1
15
ns
SDA Setup Time
T2
15
ns
SDA Hold Time
T3
10
ns
LE Hold Time
T4
10
ns
Clock Period
T5
60
ns
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 3/01A
3