ALPHA AA109-310

Preliminary
GaAs IC 5 Bit Digital Attenuator With
Serial-to-Parallel Driver 0.5–2.5 GHz
AA109-310
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
■ Attenuation 1 dB Steps to 31 dB
1
0.197
(5.00 mm)
BSC
0.187
(4.75 mm)
BSC
SEATING
PLANE
Description
12˚ MAX.
The AA109-310 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 where
high attenuation accuracy, low insertion loss and low
intermodulation products are required.Typical applications
include base station, wireless and wireless local loop gain
control circuits.
0.122 (3.10 mm)
± 0.006 (0.15 mm)
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
Condition
Insertion Loss2
Frequency
Min.
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
Attenuation Range3, 4
Typ.
Max.
Unit
2.0
2.7
3.1
2.4
3.1
3.6
dB
dB
dB
15.5
Attenuation Accuracy3, 4
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
VSWR (I/O)
0.5–2.5 GHz
Switching Characteristics5
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Input Power for 1 dB Compression
VS = +3 V
VS = +5 V
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
VS = +3 V
VS = +5 V
dB
± (0.2 + 3% of
Attenuation Setting in dB)
± (0.3 + 5% of
Attenuation Setting in dB)
± (0.3 + 6% of
Attenuation Setting in dB)
1.5:1
dB
dB
dB
2.2:1
100
300
70
µs
µs
mV
0.9–2.5 GHz
0.9–2.5 GHz
+21
+27
dBm
dBm
0.9–2.5 GHz
0.9–2.5 GHz
+41
+45
dBm
dBm
DC Electrical Characteristics at 25°C (0, +5 V)
Parameter
Symbol
Input Voltage High
VIH (1)
Input Voltage Low
VIL (0)
Supply Voltages
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Attenuation value referenced above insertion loss.
0
Typ.
Max.
3.5
5.0
0.5
Unit
V
V
IL
±0.5
µA
ICC
500
µA
VCC
5.0
V
Input Leakage Current
Quiescent Current
Min.
4. Exposed pad must be connected to RF ground to obtain specified attenuation.
5. 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 0.5–2.5 GHz
AA109-310
0
2.2
-0.5
2.0
16 dB
8 dB
-1.0
-1.5
-2.0
1.6
1.4
-2.5
4 dB
2 dB
1 dB
Ins. Loss
1.2
-3.0
1.0
-3.5
0
0.5
1.0
1.5
2.0
2.5
0
0.5
1.0
1.5
2.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
VSWR vs. Frequency
0.8
31 dB
0.6
Characteristic
Value
Supply Voltage (VCC)
8 dB
0.4
16 dB
-0.5 to +6 V
Input Voltage (VI)
0.2
-0.5 – VCC + 0.5 V
Power Dissipation (PD)
0
-0.2
1 dB
-0.4
-0.6
2 dB
500 mW
Storage Temperature (TST)
-65°C to +125°C
Operating Temperature (TOP)
-40°C to +85°C
4 dB
-0.8
Truth Table
-1.0
0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Attenuation Accuracy vs. Frequency
Surface Mount Land Pattern
5 x 5 mm MLF 32 Lead
0.020 (0.50 mm)
0.013 (0.33 mm)
0.020
(0.50 mm)
Serial Data Input
Reset
1 dB
2 dB
4 dB
8 dB
16 dB
J1–J2
Attenuation
1
1
1
1
1
1
Insertion Loss
1
0
1
1
1
1
1 dB
1
1
0
1
1
1
2 dB
1
1
1
0
1
1
4 dB
1
1
1
1
0
1
8 dB
1
1
1
1
1
0
16 dB
1
0
0
0
0
0
31 dB
0
X
X
X
X
X
31 dB
VIL (0) = 0 to 0.5 V.
VIH (1) = 3.5 to 5 V.
X = Don’t Care.
0.122
(3.10 mm)
SQ.
0.020
(0.50 mm)
0.020 (0.50 mm)
Dimensions in inches (mm).
2
2.5
Absolute Maximum Ratings
1.0
Deviation from Nominal
Attenuation (dB)
31 dB
1.8
VSWR
Insertion Loss (dB)
Typical Performance Data (VCC = +5 V)
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–2.5 GHz
SOut
GND
RST
LE
SDA
SCK
VCC
GND
0.01 µF
Pin Out
Pin 32
Pin 1
GND
GND
GND
GND
J1
GND
GND
GND
Vcc
10 kΩ
47 pF
GND
GND
GND
GND
GND
GND
GND
GND
47 pF
GND
GND
GND
GND
J2
GND
GND
GND
AA109-310
Pin
Symbol
1–4
GND
Function
Ground
5
J1
RF Input/Output
6–19
GND
Ground
RF Input/Output
20
J2
21–25
GND
Ground
26
VCC
Supply Voltage
27
SCK
Serial Clock Input
28
SDA
Serial Data Input
29
LE
Latch Enable
30
RST
Reset
31
GND
Ground
32
SOut
Serial Data Output
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