AD AD8350AR15 Low distortion 1.0 ghz differential amplifier Datasheet

a
FEATURES
High Dynamic Range
Output IP3: +22 dBm: Re 50 ⍀ @ 250 MHz
Low Noise Figure: 5.9 dB @ 250 MHz
Two Gain Versions:
AD8350-15 15 dB
AD8350-20 20 dB
–3 dB Bandwidth: 1.0 GHz
Single Supply Operation: +5 V to +10 V
Supply Current: 28 mA
Input/Output Impedance: 200 ⍀
Single-Ended or Differential Input Drive
8-Lead SOIC Package
Low Distortion
1.0 GHz Differential Amplifier
AD8350
FUNCTIONAL BLOCK DIAGRAMS
8-Lead SOIC Package (with Enable)
IN+ 1
8
IN–
7
GND
VCC 3
6
GND
4
5
OUT–
ENBL
OUT+
2
+
–
AD8350
APPLICATIONS
Cellular Base Stations
Communications Receivers
RF/IF Gain Block
Differential A-to-D Driver
SAW Filter Interface
Single-Ended to Differential Conversion
High Performance Video
High Speed Data Transmission
PRODUCT DESCRIPTION
The AD8350 series are high performance fully-differential
amplifiers useful in RF and IF circuits up to 1000 MHz. The
amplifier has excellent noise figure of 5.9 dB at 250 MHz. It
offers a high output third order intercept (OIP3) of +22 dBm
at 250 MHz. Gain versions of 15 dB and 20 dB are offered.
The amplifier can be operated down to +5 V with an OIP3 of
+22 dBm at 250 MHz and slightly reduced distortion performance. The wide bandwidth, high dynamic range and temperature stability make this product ideal for the various RF and IF
frequencies required in cellular, CATV, broadband, instrumentation and other applications.
The AD8350 is designed to meet the demanding performance
requirements of communications transceiver applications. It
enables a high dynamic range differential signal chain, with
exceptional linearity and increased common-mode rejection.
The device can be used as a general purpose gain block, an
A-to-D driver, and high speed data interface driver, among
other functions. The AD8350 input can also be used as a singleended-to-differential converter.
The AD8350 is offered in an 8-lead single SOIC package. It
operates from +5 V and +10 V power supplies, drawing 28 mA
typical. The AD8350 offers a power enable function for powersensitive applications. The AD8350 is fabricated using Analog
Devices’ proprietary high speed complementary bipolar process.
The device is available in the industrial (–40°C to +85°C)
temperature range.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999
+25ⴗC, V = +5 V, G = 15 dB, unless otherwise noted. All specifications refer
AD8350-15–SPECIFICATIONS (@to differential
inputs and differential outputs unless noted.)
S
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time
Gain (S21)1
Gain Supply Sensitivity
Gain Temperature Sensitivity
Isolation (S12)1
NOISE/HARMONIC PERFORMANCE
50 MHz Signal
Second Harmonic
Third Harmonic
Output Second Order Intercept2
Output Third Order Intercept2
250 MHz Signal
Second Harmonic
Third Harmonic
Output Second Order Intercept2
Output Third Order Intercept2
1 dB Compression Point (RTI)2
Voltage Noise (RTI)
Noise Figure
INPUT/OUTPUT CHARACTERISTICS
Differential Offset Voltage (RTI)
Differential Offset Drift
Input Bias Current
Input Resistance
Input Capacitance
CMRR
Output Resistance
Output Capacitance
POWER SUPPLY
Operating Range
Quiescent Current
Power-Up/Down Switching
Power Supply Rejection Ratio
Conditions
Min
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VOUT = 1 V p-p
0.1%, VOUT = 1 V p-p
VS = +5 V, f = 50 MHz
VS = +5 V to +10 V, f = 50 MHz
TMIN to TMAX
f = 50 MHz
14
Typ
0.9
1.1
270
270
2000
10
15
0.003
–0.002
–18
Max
16
Units
GHz
GHz
MHz
MHz
V/µs
ns
dB
dB/V
dB/°C
dB
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V
VS = +10 V
VS = +5 V
VS = +10 V
–66
–67
–65
–70
52
52
22
23
dBc
dBc
dBc
dBc
dBm
dBm
dBm
dBm
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V
VS = +10 V
VS = +5 V
VS = +10 V
VS = +5 V
VS = +10 V
f = 150 MHz
f = 150 MHz
–48
–49
–52
–61
33
34
18
22
2
5
1.7
6.8
dBc
dBc
dBc
dBc
dBm
dBm
dBm
dBm
dBm
dBm
nV/√Hz
dB
VOUT+ – VOUT–
TMIN to TMAX
±1
0.02
15
200
2
–67
200
2
mV
mV/°C
µA
Ω
pF
dB
Ω
pF
Real
f = 50 MHz
Real
Powered Up, VS = +5 V
Powered Down, VS = +5 V
Powered Up, VS = +10 V
Powered Down, VS = +10 V
+4
25
3
27
3
f = 50 MHz, VS ∆ = 1 V p-p
OPERATING TEMPERATURE RANGE
–40
28
3.8
30
4
15
–58
+11.0
32
5.5
34
6.5
V
mA
mA
mA
mA
ns
dB
+85
°C
NOTES
1
See Tables I–IV for complete list of S-Parameters.
2
Re: 50 Ω.
Specifications subject to change without notice.
–2–
REV. 0
AD8350-20–SPECIFICATIONS
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time
Gain (S21)1
Gain Supply Sensitivity
Gain Temperature Sensitivity
Isolation (S12)1
NOISE / HARMONIC PERFORMANCE
50 MHz Signal
Second Harmonic
Third Harmonic
Output Second Order Intercept2
Output Third Order Intercept2
250 MHz Signal
Second Harmonic
Third Harmonic
Output Second Order Intercept2
Output Third Order Intercept2
1 dB Compression Point (RTI)2
Voltage Noise (RTI)
Noise Figure
INPUT/OUTPUT CHARACTERISTICS
Differential Offset Voltage (RTI)
Differential Offset Drift
Input Bias Current
Input Resistance
Input Capacitance
CMRR
Output Resistance
Output Capacitance
POWER SUPPLY
Operating Range
Quiescent Current
Power-Up/Down Switching
Power Supply Rejection Ratio
(@ +25ⴗC, VS = +5 V, G = 20 dB, unless otherwise noted. All
specifications refer to differential inputs and differential outputs
unless noted.)
Conditions
Min
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VOUT = 1 V p-p
0.1%, VOUT = 1 V p-p
VS = +5 V, f = 50 MHz
VS = +5 V to +10 V, f = 50 MHz
TMIN to TMAX
f = 50 MHz
0.7
0.9
230
200
2000
15
20
0.003
–0.002
–22
Max
21
Units
GHz
GHz
MHz
MHz
V/µs
ns
dB
dB/V
dB/°C
dB
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V
VS = +10 V
VS = +5 V
VS = +10 V
–65
–66
–66
–70
50
50
22
23
dBc
dBc
dBc
dBc
dBm
dBm
dBm
dBm
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V, VOUT = 1 V p-p
VS = +10 V, VOUT = 1 V p-p
VS = +5 V
VS = +10 V
VS = +5 V
VS = +10 V
VS = +5 V
VS = +10 V
f = 150 MHz
f = 150 MHz
–45
–46
–55
–60
31
32
18
22
–2.6
1.8
1.7
5.6
dBc
dBc
dBc
dBc
dBm
dBm
dBm
dBm
dBm
dBm
nV/√Hz
dB
VOUT+ – VOUT–
TMIN to TMAX
±1
0.02
15
200
2
–52
200
2
mV
mV/°C
µA
Ω
pF
dB
Ω
pF
Real
f = 50 MHz
Real
Powered Up, VS = +5 V
Powered Down, VS = +5 V
Powered Up, VS = +10 V
Powered Down, VS = +10 V
+4
25
3
27
3
f = 50 MHz, VS ∆ = 1 V p-p
OPERATING TEMPERATURE RANGE
–40
NOTES
1
See Tables I–IV for complete list of S-Parameters.
2
Re: 50 Ω.
Specifications subject to change without notice.
REV. 0
19
Typ
AD8350
–3–
28
3.8
30
4
15
–45
+11.0
32
5.5
34
6.5
V
mA
mA
mA
mA
ns
dB
+85
°C
AD8350
PIN FUNCTION DESCRIPTIONS
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . +11 V
Input Power Differential . . . . . . . . . . . . . . . . . . . . . . . +8 dBm
Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . 400 mW
θJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W
Maximum Junction Temperature . . . . . . . . . . . . . . . . +125°C
Operating Temperature Range . . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . . +300°C
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may effect device reliability.
Pin
Function
Description
1, 8
IN+, IN–
2
ENBL
3
4, 5
VCC
OUT+, OUT–
6, 7
GND
Differential Inputs. IN+ and IN–
should be ac-coupled (pins have a dc
bias of midsupply). Differential input
impedance is 200 Ω.
Power-up Pin. A high level (5 V) enables the device; a low level (0 V) puts
device in sleep mode.
Positive Supply Voltage. +5 V to +10 V.
Differential Outputs. OUT+ and
OUT– should be ac-coupled (pins have
a dc bias of midsupply). Differential
input impedance is 200 Ω.
Common External Ground Reference.
PIN CONFIGURATION
IN+ 1
8
AD8350
IN–
GND
TOP VIEW
VCC 3 (Not to Scale) 6 GND
ENBL 2
OUT+ 4
7
5
OUT–
ORDERING GUIDE
Model
Temperature Range Package Description
Package Option
AD8350AR15
AD8350AR15-REEL1
AD8350AR15-REEL72
AD8350AR15-EVAL
AD8350AR20
AD8350AR20-REEL1
AD8350AR20-REEL72
AD8350AR20-EVAL
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
SO-8
SO-8
SO-8
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
8-Lead SOIC
8-Lead SOIC
8-Lead SOIC
Evaluation Board (15 dB)
8-Lead SOIC
8-Lead SOIC
8-Lead SOIC
Evaluation Board (20 dB)
SO-8
SO-8
SO-8
NOTES
1
13" Reels of 2500 each.
2
7" Reels of 750 each.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD8350 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
–4–
WARNING!
ESD SENSITIVE DEVICE
REV. 0
Typical Performance Characteristics– AD8350
20
25
VCC = 10V
40
15
30
VCC = 5V
20
10
5
VCC = 5V
15
10
10
VCC = 5V
0
–40
–20
0
20
40
TEMPERATURE – 8C
0
60
80
1
Figure 1. Supply Current vs.
Temperature
10
100
1k
FREQUENCY – MHz
5
10k
Figure 2. AD8350-15 Gain (S21) vs.
Frequency
500
300
300
400
VCC = 10V
200
VCC = 5V
150
250
VCC = 10V
200
VCC = 5V
150
100
1
10
100
FREQUENCY – MHz
100
1k
FREQUENCY – MHz
10k
VCC = 10V
300
VCC = 5V
200
0
1
10
100
FREQUENCY – MHz
1
1k
Figure 5. AD8350-20 Input Impedance vs. Frequency
500
10
100
100
1k
Figure 4. AD8350-15 Input Impedance vs. Frequency
IMPEDANCE – V
350
250
1
Figure 3. AD8350-20 Gain (S21) vs.
Frequency
350
IMPEDANCE – V
IMPEDANCE – V
20
VCC = 10V
GAIN – dB
VCC = 10V
GAIN – dB
SUPPLY CURRENT – mA
50
10
100
FREQUENCY – MHz
1k
Figure 6. AD8350-15 Output Impedance vs. Frequency
–5
–10
–10
–15
VCC = 5V
300
200
VCC = 10V
–15
VCC = 10V
–20
100
0
1
10
100
FREQUENCY – MHz
1k
Figure 7. AD8350-20 Output Impedance vs. Frequency
REV. 0
ISOLATION – dB
ISOLATION – dB
IMPEDANCE – V
400
VCC = 10V
–20
–30
–25
1
10
100
1k
FREQUENCY – MHz
10k
Figure 8. AD8350-15 Isolation (S12)
vs. Frequency
–5–
VCC = 5V
–25
VCC = 5V
1
10
100
1k
FREQUENCY – MHz
10k
Figure 9. AD8350-20 Isolation (S12)
vs. Frequency
AD8350
–40
–45
HD2 (VCC = 5V)
–55
HD3 (VCC = 5V)
–60
–65
HD3 (VCC = 10V)
–50
HD2 (VCC = 10V)
–55
–60
–65
–70
–70
–75
–75
0
50
100
150
200
250
300
FUNDAMENTAL FREQUENCY – MHz
Figure 10. AD8350-15 Harmonic
Distortion vs. Frequency
–45
FO = 50MHz
–80
HD3 (VCC = 10V)
–75
OIP2 – dBm (Re: 50V)
DISTORTION – dBc
HD2 (VCC = 10V)
–85
0.5
1
1.5
2
2.5
3
OUTPUT VOLTAGE – V p-p
60
60
55
55
VCC = 10V
50
45
VCC = 5V
40
30
3.5
Figure 13. AD8350-20 Harmonic Distortion vs. Differential Output Voltage
100
150
200
FREQUENCY – MHz
250
25
20
VCC = 5V
10
3.5
100
150
200
FREQUENCY – MHz
250
Figure 16. AD8350-15 Output
Referred IP3 vs. Frequency
300
VCC = 5V
40
0
10.0
VCC = 10V
25
20
15
5
VCC = 10V
VCC = 5V
0
100
150
200
FREQUENCY – MHz
250
Figure 17. AD8350-20 Output
Referred IP3 vs. Frequency
–6–
100
150
200
FREQUENCY – MHz
250
300
300
INPUT REFERRED
VCC = 10V
7.5
5.0
2.5
0
VCC = 5V
–2.5
–5.0
50
50
Figure 15. AD8350-20 Output
Referred IP2 vs. Frequency
10
50
1
1.5
2
2.5
3
OUTPUT VOLTAGE – V p-p
45
300
1dB COMPRESSION – dBm (Re: 50V)
VCC = 10V
OIP3 – dBm (Re: 50V)
OIP3 – dBm (Re: 50V)
50
30
0
0.5
50
30
0
35
30
5
0
35
Figure 14. AD8350-15 Output
Referred IP2 vs. Frequency
35
15
HD3 (VCC = 10V)
Figure 12. AD8350-15 Harmonic Distortion vs. Differential Output Voltage
35
0
HD2 (VCC = 10V)
50
100
150
200
250
300
FUNDAMENTAL FREQUENCY – MHz
Figure 11. AD8350-20 Harmonic
Distortion vs. Frequency
HD3 (VCC = 5V)
–85
–65
–75
HD3 (VCC = 10V)
0
HD2 (VCC = 5V)
–55
HD2 (VCC = 5V)
–55
–65
HD3 (VCC = 5V)
OIP2 – dBm (Re: 50V)
–80
HD3 (VCC = 5V)
HD2 (VCC = 5V)
DISTORTION – dBc
HD2 (VCC = 10V)
–50
FO = 50MHz
VOUT = 1V p-p
DISTORTION – dBc
DISTORTION – dBc
–45
–45
–40
VOUT = 1V p-p
0
100
200
300
400
FREQUENCY – MHz
500
600
Figure 18. AD8350-15 1 dB Compression vs. Frequency
REV. 0
AD8350
5.0
VCC = 10V
2.5
0
–2.5
VCC = 5V
–5.0
–7.5
0
100
10
9
9
8
VCC = 10V
7
VCC = 5V
200
300
400
FREQUENCY – MHz
500
5
600
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
Figure 20. AD8350-15 Noise Figure
vs. Frequency
0
Figure 21. AD8350-20 Noise Figure
vs. Frequency
VCC = 5V
AD8350-15
5
0
–5
–40
0
VOUT – (VCC = 5V)
–50
–100
VOUT + (VCC = 10V)
VOUT – (VCC = 10V)
–200
1
2
3
4
5
6
7
VCC – Volts
8
9
10
Figure 22. AD8350 Gain (S21) vs.
Supply Voltage
–20
VCC = 5V
–250
–40
0
20
40
TEMPERATURE – 8C
60
80
Figure 23. AD8350 Output Offset
Voltage vs. Temperature
VCC = 5V
500mV
VOUT
–50
AD8350-15
–70
ENBL
–80
5V
30ns
–90
1
10
100
FREQUENCY – MHz
Figure 25. AD8350 CMRR vs.
Frequency
REV. 0
–60
AD8350-15
–90
–20
–40
–60
AD8350-20
–80
–30
AD8350-20
–50
–70
–150
–10
–15
–30
VOUT + (VCC = 5V)
PSRR – dB
OUTPUT OFFSET – mV
10
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
–20
50
15
PSRR – dB
VCC = 5V
AD8350-20
20
–20
VCC = 10V
7
5
0
100
25
8
6
6
Figure 19. AD8350-20 1 dB Compression vs. Frequency
GAIN – dB
10
NOISE FIGURE – dB
INPUT REFERRED
NOISE FIGURE – dB
1dB COMPRESSION – dBm (Re: 50V)
7.5
1k
Figure 26. AD8350 Power-Up/Down
Response Time
–7–
1
10
100
FREQUENCY – MHz
Figure 24. AD8350 PSRR vs.
Frequency
1k
AD8350
Reactive Matching
APPLICATIONS
Using the AD8350
In practical applications, the AD8350 will most likely be matched
using reactive matching components as shown in Figure 29.
Matching components can be calculated using a Smith Chart
and the AD8350’s S-Parameters (see Tables I and II) along
with those of the devices that are driving and loading it. The SParameters in Tables I and II assume a differential source and
load impedance of 50 Ω. Because the load impedance on the
output of the AD8350 affects the input impedance, a simultaneous conjugate match must be performed to correctly match
both input and output.
Figure 27 shows the basic connections for operating the AD8350.
A single supply in the range +5 V to +10 V is required. The
power supply pin should be decoupled using a 0.1 µF capacitor.
The ENBL pin is tied to the positive supply or to +5 V (when
VCC = +10 V) for normal operation and should be pulled to
ground to put the device in sleep mode. Both the inputs and the
outputs have dc bias levels at midsupply and should be ac-coupled.
Also shown, in Figure 27, are the impedance balancing requirements, either resistive or reactive, of the input and output. With
an input and output impedance of 200 Ω, the AD8350 should
be driven by a 200 Ω source and loaded by a 200 Ω impedance.
A reactive match can also be implemented.
C1
Figure 28 shows how the AD8350 can be driven by a singleended source. The unused input should be ac-coupled to
ground. When driven single-ended, there will be a slight imbalance in the differential output voltages. This will cause an increase in the second order harmonic distortion (at 50 MHz,
with VCC = +10 V and VOUT = 1 V p-p, –59 dBc was measured
for the second harmonic on AD8350-15).
8
7
6
C2
5
AD8350
–
L2
+
L1
1
2
3
4
C2
C1
C2
0.1mF
ENBL (+5V)
+VS (+5V TO +10V)
Figure 29. Reactively Matching the Input and Output
SOURCE
Z = 100V
LOAD
C2
0.001mF
8
7
6
5
C4
0.001mF
AD8350
–
+
Z = 200V
1
2
3
4
Z = 100V
C1
0.001mF
C3
0.001mF
C5
0.1mF
ENBL (+5V)
+VS (+5V TO +10V)
Figure 27. Basic Connections for Differential Drive
LOAD
C2
0.001mF
8
7
6
5
C4
0.001mF
AD8350
–
+
Z = 200V
1
SOURCE
Z = 200V
2
3
4
C3
0.001mF
C5
0.1mF
C1
0.001mF
ENBL (+5V)
+VS (+5V TO +10V)
Figure 28. Basic Connections for Single-Ended Drive
–8–
REV. 0
AD8350
Figure 30 shows how the AD8350 input can be matched for a
single-ended drive. The unused input is ac-coupled to ground
using a low impedance (i.e., high value) capacitance. The SParameters for this configuration are shown in Tables III and
IV. These values assume a single-ended source impedance of
50 Ω and a differential load impedance of 50 Ω. As in the case
of a differential drive, a simultaneous conjugate match must be
performed to correctly match both input and output.
0.001mF
8
7
6
Evaluation Board
Figure 31 shows the schematic of the AD8350 evaluation board
as it is shipped from the factory. The board is configured to
allow easy evaluation using single-ended 50 Ω test equipment.
The input and output transformers have a 4-to-1 impedance
ratio and transform the AD8350’s 200 Ω input and output
impedances to 50 Ω. In this mode, 0 Ω resistors (R1 and R4)
are required.
To allow compensation for the insertion loss of the transformers, a calibration path is provided at Test In and Test Out. This
consists of two transformers connected back to back.
C2
5
To drive and load the board differentially, transformers T1 and
T2 should be removed and replaced with four 0 Ω resistors
(0805 size); Resistors R1 and R4 (0 Ω) should also be removed.
This yields a circuit with a broadband input and output impedance of 200 Ω. To match to impedances other than this, matching components (0805 size) can be placed on pads C1, C2, C3,
C4, L1 and L2.
AD8350
–
+
L2
1
C1
2
3
4
C2
L1
C2
0.1mF
ENBL
(+5V)
+VS (+5V TO +10V)
Figure 30. Matching Circuit for Single-Ended Drive
C3
0.001mF
C1
0.001mF
IN–
T1: TC4-1W
(MINI CIRCUITS)
6
1
7
8
5
6
AD8350
R2
0V
–
L1
(OPEN)
L2
(OPEN)
+
R1
0V
R3
0V
T2: TC4-1W
(MINI CIRCUITS)
1
IN+
OUT–
6
OUT+
1
2
3
4
C2
0.001mF
+VS
TEST IN
C4
0.001mF
A
3
B
2
C5
0.1mF
SW1
1
T3: TC4-1W
(MINI CIRCUITS)
6
1
+VS
T4: TC4-1W
(MINI CIRCUITS)
TEST OUT
1
6
Figure 31. AD8350 Evaluation Board
REV. 0
R4
0V
–9–
AD8350
Table I. Typical S Parameters AD8350-15: V CC = 5 V, Differential Input Signal.
ZSOURCE(diff) = 50 ⍀, ZLOAD(diff) = 50 ⍀
Frequency
(MHz)
S11
S12
S21
S22
50
100
150
200
250
0.791 ∠ –3°
0.787 ∠ –6°
0.778 ∠ –9°
0.766 ∠ –13°
0.749 ∠ –17°
0.068 ∠ 177°
0.071 ∠ 174°
0.070 ∠ 172°
0.072 ∠ 168°
0.074 ∠ 165°
2.73 ∠ –3°
2.79 ∠ –7°
2.91 ∠ –11°
3.06 ∠ –16°
3.24 ∠ –21°
0.795 ∠ –2°
0.794 ∠ –5°
0.787 ∠ –7°
0.779 ∠ –10°
0.768 ∠ –12°
Table II. Typical S Parameters AD8350-20: VCC = 5 V, Differential Input Signal.
ZSOURCE(diff) = 50 ⍀, ZLOAD(diff) = 50 ⍀
Frequency
(MHz)
S11
S12
S21
S22
50
100
150
200
250
0.810 ∠ –4°
0.795 ∠ –8°
0.790 ∠ –12°
0.776 ∠ –17°
0.757 ∠ –22°
0.046 ∠ 176°
0.043 ∠ 173°
0.045 ∠ 169°
0.046 ∠ 165°
0.048 ∠ 162°
4.82 ∠ –2.5°
4.99 ∠ –6.16°
5.30 ∠ –9.82°
5.71 ∠ –14.89°
6.25 ∠ –21.29°
0.822 ∠ –3°
0.809 ∠ –5°
0.807 ∠ –8°
0.795 ∠ –10°
0.783 ∠ –13°
Table III. Typical S Parameters AD8350-15: VCC = 5 V, Single-Ended Input Signal.
ZSOURCE(diff) = 50 ⍀, ZLOAD(diff) = 50 ⍀
Frequency
(MHz)
S11
S12
S21
S22
50
100
150
200
250
0.718 ∠ –6°
0.701 ∠ –12°
0.683 ∠ –19°
0.657 ∠ –24°
0.625 ∠ –31°
0.068 ∠ 177°
0.066 ∠ 173°
0.067 ∠ 167°
0.069 ∠ 163°
0.070 ∠ 159°
2.62 ∠ –4°
2.66 ∠ –10°
2.76 ∠ –15°
2.86 ∠ –22°
2.98 ∠ –28°
0.798 ∠ –3°
0.794 ∠ –6°
0.789 ∠ –10°
0.776 ∠ –13°
0.763 ∠ –16°
Table IV. Typical S Parameters AD8350-20: VCC = 5 V, Single-Ended Input Signal.
ZSOURCE(diff) = 50 ⍀, ZLOAD(diff) = 50 ⍀
Frequency
(MHz)
S11
S12
S21
S22
50
100
150
200
250
0.747 ∠ –7°
0.739 ∠ –14°
0.728 ∠ –21°
0.698 ∠ –29°
0.659 ∠ –37°
0.040 ∠ 175°
0.042 ∠ 170°
0.044 ∠ 166°
0.045 ∠ 161°
0.048 ∠ 156°
4.71 ∠ –4°
4.82 ∠ –9°
5.08 ∠ –15°
5.37 ∠ –22°
5.76 ∠ –30°
0.814 ∠ –3°
0.813 ∠ –6°
0.804 ∠ –10°
0.792 ∠ –13°
0.774 ∠ –16°
–10–
REV. 0
AD8350
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
C3577–8–4/99
8-Lead Plastic SOIC
(SO-8)
0.1968 (5.00)
0.1890 (4.80)
0.1574 (4.00)
0.1497 (3.80)
8
5
1
4
0.2440 (6.20)
0.2284 (5.80)
PIN 1
0.0196 (0.50)
3 458
0.0099 (0.25)
0.0500 (1.27)
BSC
0.0098 (0.25)
0.0040 (0.10)
0.0192 (0.49)
0.0138 (0.35)
88
0.0500 (1.27)
0.0098 (0.25) 08
0.0160 (0.41)
0.0075 (0.19)
PRINTED IN U.S.A.
SEATING
PLANE
0.0688 (1.75)
0.0532 (1.35)
REV. 0
–11–