ARA3000S23 [ANADIGICS]
Telephony Reverse Amplifier With Step Attenuator; 电话反向放大器，步进衰减器
| 型号： | ARA3000S23 |
| 厂家： | 
ANADIGICS, INC |
| 描述： | Telephony Reverse Amplifier With Step Attenuator |
| 文件： | 总2页 (文件大小：177K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ARA3000S23
Telephony ReverseAmplifier
with StepAttenuator
Product Brief - Rev 0
FEATURES
·
·
Attenuation Range: 0-56 dB, adjustable in
2 dB increments via a serial 3 wire control
Meets DOCSIS distortion requirements at
+60 dBmV output signal level
Low noise figure
Low cost integrated monolithic GaAs
amplifier with step attenuator
+5V Operation
·
·
·
·
Power saving shutdown capability
APPLICATIONS
DOSIS Compliant IP Telephony Systems.
Ordering Information
ARA3000 S23 -40 to +850 C
28 PIN SSOP PACKAGE
·
·
·
CATV Interactive Set-Top Box
Home Gateway
Description
The ARA3000 is a GaAs IC designed to provide additional reverse path amplification and isolation in IP
Telephony Systems. The precision step attenuator can be digitally controlled to set the output power to the
desired level. The single amplifier stage at the output is capable of meeting both the DOCSIS distortion and
noise requirements from a single +5V supply. In addition, the output amp can be shut down and bypassed
by an on chip switch to save power. The ARA3000 is supplied in a 28-pin SSOP package featuring an
exposed paddle on the bottom of the package. Soldering the exposed paddle to the ground plane of the PC
board ensures the lowest possible thermal resistance for the IC resulting in a long MTF.
3
20
10
27
2
1
28
22
24
23
sw bias gnd
+5V
9
attn in 5 BIT ATTENUATOR attn out
4 - 6
c1
32 / 16 / 8 / 4 / 2 dB
c2
26
32
32
16
8
4
2
16
8
4
2
11
19
+3V
CMOS
D1
gnd SERIAL to PARALLEL D0
clk data enable CO C1
12
13
14
15
16
17
18
7 - 8
21
25
Figure 1: Functional Block Diagram
ARA3000S23
DC Electrical Specifications (TA=250C, Vdd=+5V, Vdd CMOS=+3V)
PARAMETER
TYP
UNIT
COMMENTS
Current Consumption
+5V
+5V
+3V
12
120
2
mA
mA
mA
Amplifier Disabled
Amplifier Enabled
Max Attenuation Setting
AC Electrical Specifications (TA=250C, Vdd=+5V, Vdd CMOS=+3V)
PARAMETER
TYP
UNIT
COMMENTS
Attenuator setting @ 0 dB
Amplifier enabled
16
dB
Gain
Attenuator setting @ 0 dB
Amplifier disabled (bypassed)
-1.7
dB
Gain Flatness
0.5
dB
5 to 42 MHz
Gain variation over temp
-0.006
dB/C
Attenuation Step Sizes
2 dB
4 dB
8 dB
16 dB
32 dB
1.7
3.9
8.1
15.9
30.7
dB
dB
dB
dB
dB
-55
-60
-60
-60
dBc
dBc
dBc
dBc
Pout = +60 dBmV (amp enabled)
Pin = + 58 dBmV (amp disabled)
Pout = +60 dBmV (amp enabled)
Pin = + 58 dBmV (amp disabled)
2nd Harmonic Level
3rd Harmonic Level
Attenuator setting of 62 dB and amp
disabled
Maximum Isolation
Noise Figure
-60
3.5
dB
dB
Attenuator setting of 0 dB and amp
enabled
Input & Output Impedance
Input & Output Return Loss
75
ohms
dB
-12
ANADIGICS, Inc.
35 Technology Drive
Warren, New Jersey 07059
Tel: (908) 668-5000
Fax: (908) 668-5132
http://www.anadigics.com
Mktg@anadigics.com
IMPORTANT NOTICE
ANADIGICS, Inc. reserves the right to make changes to its products or discontinue any product at any time without notice.
The Advanced Product data sheets and product specifications contained in this data sheet are subject to change prior to
a products formal introduction. The information in this data sheet has been carefully checked and is assumed to be reliable.
However, ANADIGICS assumes no responsibility for inaccuracies. ANADIGICS strongly urges customers to verify that the
information they are using is current before placing orders.
WARNING
ANADIGICS products are not intended for use in life support appliances, devices, or systems. Use of an ANADIGICS
product in any such application without written consent is prohibited.
2
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