AD8331ARQZ Analog Devices Inc, AD8331ARQZ Datasheet - Page 29
![IC VGA SINGLE W/PREAMP 20-QSOP](/photos/7/2/70250/rq-20_sml.jpg)
AD8331ARQZ
Manufacturer Part Number
AD8331ARQZ
Description
IC VGA SINGLE W/PREAMP 20-QSOP
Manufacturer
Analog Devices Inc
Series
X-AMP®r
Type
Variable Gain Amplifierr
Datasheet
1.AD8331ARQZ.pdf
(56 pages)
Specifications of AD8331ARQZ
Design Resources
Interfacing the High Frequency AD8331 to AD9215 (CN0096)
Applications
Signal Processing
Mounting Type
Surface Mount
Package / Case
20-QSOP
No. Of Amplifiers
2
Bandwidth
120MHz
Gain Accuracy
2dB
No. Of Channels
1
Supply Voltage Range
4.5V To 5.5V
Amplifier Case Style
QSOP
No. Of Pins
20
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AD8331-EVALZ - BOARD EVAL FOR AD8331
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8331ARQZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Output Clamping
Outputs are internally limited to a level of 4.5 V p-p differential
when operating at a 2.5 V common-mode voltage. The postamp
implements an optional output clamp engaged through a resistor
from R
resistor values.
Output clamping can be used for ADC input overload protection, if
needed, or postamp overload protection when operating from a
lower common-mode level, such as 1.5 V. The user should be
aware that distortion products increase as output levels approach
the clamping levels, and the user should adjust the clamp resistor
accordingly. For additional information, see the Applications
Information section.
The accuracy of the clamping levels is approximately ±5% in LO
or HI mode. Figure 80 illustrates the output characteristics for a
few values of R
CLMP
to ground. Table 8 shows a list of recommended
CLMP
.
Rev. G | Page 29 of 56
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–3
R
8.8kΩ
3.5kΩ
3.5kΩ
8.8kΩ
Figure 80. Output Clamping Characteristics
CLMP
R
R
–2
= 1.86kΩ
CLMP
CLMP
=
=
∞
∞
AD8331/AD8332/AD8334
–1
V
INH
0
(V)
1
2
3