Datasheet AD8350 Datasheet (Analog Devices)

Low Distortion

1

2

3

4

8

7

6

5

AD8350

IN+ IN–

ENBL

OUT+

OUT–

V

CC

GND

+

–

GND

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

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

1.0 GHz Differential Amplifier
AD8350

FUNCTIONAL BLOCK DIAGRAMS

8-Lead SOIC Package (with Enable)

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 +22dBm
at 250 MHz. Gain versions of 15 dB and 20 dB are offered.

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 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 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: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1999

(@ +25ⴗC, VS = +5 V, G = 15 dB, unless otherwise noted. All specifications refer

AD8350-15–SPECIFICA TIONS

to differential inputs and differential outputs unless noted.)

Parameter Conditions Min Typ Max Units

DYNAMIC PERFORMANCE

–3 dB Bandwidth VS = +5 V, V

= +10 V, V

V

Bandwidth for 0.1 dB Flatness V
Slew Rate V

Settling Time 0.1%, V
Gain (S21)

1

Gain Supply Sensitivity V
Gain Temperature Sensitivity T
Isolation (S12)

1

S

= +5 V, V

S

V

= +10 V, V

S

= 1 V p-p 2000 V/µs

OUT

OUT

VS = +5 V, f = 50 MHz 14 15 16 dB

= +5 V to +10 V, f = 50 MHz 0.003 dB/V

S

to T

MIN

f = 50 MHz –18 dB

= 1 V p-p 0.9 GHz

OUT

= 1 V p-p 1.1 GHz

OUT

= 1 V p-p 270 MHz

OUT

= 1 V p-p 270 MHz

OUT

= 1 V p-p 10 ns

MAX

–0.002 dB/°C

NOISE/HARMONIC PERFORMANCE

50 MHz Signal

Second Harmonic V
Third Harmonic V
Output Second Order Intercept
Output Third Order Intercept

2

2

= +5 V, V

S

V

= +10 V, V

S

= +5 V, V

S

= +10 V, V

V

S

VS = +5 V 52 dBm
V

= +10 V 52 dBm

S

VS = +5 V 22 dBm
V

= +10 V 23 dBm

S

= 1 V p-p –66 dBc

OUT

= 1 V p-p –67 dBc

OUT

= 1 V p-p –65 dBc

OUT

= 1 V p-p –70 dBc

OUT

250 MHz Signal

Second Harmonic V
Third Harmonic V
Output Second Order Intercept
Output Third Order Intercept

1 dB Compression Point (RTI)

2

2

2

= +5 V, V

S

V

= +10 V, V

S

= +5 V, V

S

= +10 V, V

V

S

VS = +5 V 33 dBm
V

= +10 V 34 dBm

S

VS = +5 V 18 dBm
V

= +10 V 22 dBm

S

VS = +5 V 2 dBm

= +10 V 5 dBm

V

S

= 1 V p-p –48 dBc

OUT

= 1 V p-p –49 dBc

OUT

= 1 V p-p –52 dBc

OUT

= 1 V p-p –61 dBc

OUT

Voltage Noise (RTI) f = 150 MHz 1.7 nV/√Hz
Noise Figure f = 150 MHz 6.8 dB

INPUT/OUTPUT CHARACTERISTICS

Differential Offset Voltage (RTI) V
Differential Offset Drift T

OUT+
MIN

– V

to T

OUT–

MAX

±1mV

0.02 mV/°C
Input Bias Current 15 µA
Input Resistance Real 200 Ω
Input Capacitance 2pF
CMRR f = 50 MHz –67 dB
Output Resistance Real 200 Ω
Output Capacitance 2pF

POWER SUPPLY

Operating Range +4 +11.0 V
Quiescent Current Powered Up, V

Powered Down, V
Powered Up, V
Powered Down, V

= +5 V 25 28 32 mA

S

= +5 V 3 3.8 5.5 mA

S

= +10 V 27 30 34 mA

S

= +10 V 3 4 6.5 mA

S

Power-Up/Down Switching 15 ns
Power Supply Rejection Ratio f = 50 MHz, VS ∆ = 1 V p-p –58 dB

OPERATING TEMPERATURE RANGE –40 +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

(@ +25ⴗC, VS = +5 V, G = 20 dB, unless otherwise noted. All
specifications refer to differential inputs and differential outputs

AD8350-20–SPECIFICATIONS

unless noted.)

AD8350

Parameter Conditions Min Typ Max Units

DYNAMIC PERFORMANCE

–3 dB Bandwidth VS = +5 V, V

V

= +10 V, V

Bandwidth for 0.1 dB Flatness V
Slew Rate V

Settling Time 0.1%, V
Gain (S21)

1

Gain Supply Sensitivity V
Gain Temperature Sensitivity T
Isolation (S12)

1

S

= +5 V, V

S

= +10 V, V

V

S

= 1 V p-p 2000 V/µs

OUT

OUT

VS = +5 V, f = 50 MHz 19 20 21 dB

= +5 V to +10 V, f = 50 MHz 0.003 dB/V

S

to T

MIN

f = 50 MHz –22 dB

= 1 V p-p 0.7 GHz

OUT

= 1 V p-p 0.9 GHz

OUT

= 1 V p-p 230 MHz

OUT

= 1 V p-p 200 MHz

OUT

= 1 V p-p 15 ns

MAX

–0.002 dB/°C

NOISE / HARMONIC PERFORMANCE

50 MHz Signal

Second Harmonic V
Third Harmonic V
Output Second Order Intercept
Output Third Order Intercept

2

2

= +5 V, V

S

V

= +10 V, V

S

= +5 V, V

S

V

= +10 V, V

S

= 1 V p-p –65 dBc

OUT

= 1 V p-p –66 dBc

OUT

= 1 V p-p –66 dBc

OUT

= 1 V p-p –70 dBc

OUT

VS = +5 V 50 dBm

= +10 V 50 dBm

V

S

VS = +5 V 22 dBm
V

= +10 V 23 dBm

S

250 MHz Signal

Second Harmonic V
Third Harmonic V
Output Second Order Intercept
Output Third Order Intercept

1 dB Compression Point (RTI)

2

2

2

= +5 V, V

S

V

= +10 V, V

S

= +5 V, V

S

V

= +10 V, V

S

VS = +5 V 31 dBm

= +10 V 32 dBm

V

S

VS = +5 V 18 dBm
V

= +10 V 22 dBm

S

VS = +5 V –2.6 dBm
V

= +10 V 1.8 dBm

S

= 1 V p-p –45 dBc

OUT

= 1 V p-p –46 dBc

OUT

= 1 V p-p –55 dBc

OUT

= 1 V p-p –60 dBc

OUT

Voltage Noise (RTI) f = 150 MHz 1.7 nV/√Hz
Noise Figure f = 150 MHz 5.6 dB

INPUT/OUTPUT CHARACTERISTICS

Differential Offset Voltage (RTI) V
Differential Offset Drift T

OUT+
MIN

– V

to T

OUT–
MAX

±1mV

0.02 mV/°C
Input Bias Current 15 µA
Input Resistance Real 200 Ω
Input Capacitance 2pF
CMRR f = 50 MHz –52 dB
Output Resistance Real 200 Ω
Output Capacitance 2pF

POWER SUPPLY

Operating Range +4 +11.0 V
Quiescent Current Powered Up, V

Powered Down, V
Powered Up, V
Powered Down, V

= +5 V 25 28 32 mA

S

= +5 V 3 3.8 5.5 mA

S

= +10 V 27 30 34 mA

S

= +10 V 3 4 6.5 mA

S

Power-Up/Down Switching 15 ns
Power Supply Rejection Ratio f = 50 MHz, VS ∆ = 1 V p-p –45 dB

OPERATING TEMPERATURE RANGE –40 +85 °C

NOTES

1

See Tables I–IV for complete list of S-Parameters.

2

Re: 50 Ω.

Specifications subject to change without notice.

REV. 0 –3–

AD8350

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . +11 V

Input Power Differential . . . . . . . . . . . . . . . . . . . . . . . +8 dBm

Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . .400 mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W

θ

JA

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 perma-

nent 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 CONFIGURATION

IN+

ENBL

V

OUT+

CC

1

2

AD8350

TOP VIEW

3

(Not to Scale)

4

8

7

6

5

IN–
GND
GND
OUT–

ORDERING GUIDE

Model Temperature Range Package Description Package Option

AD8350AR15 –40°C to +85°C 8-Lead SOIC SO-8
AD8350AR15-REEL1–40°C to +85°C 8-Lead SOIC SO-8
AD8350AR15-REEL7

2

–40°C to +85°C 8-Lead SOIC SO-8
AD8350AR15-EVAL Evaluation Board (15 dB)
AD8350AR20 –40°C to +85°C 8-Lead SOIC SO-8
AD8350AR20-REEL
AD8350AR20-REEL7

1

–40°C to +85°C 8-Lead SOIC SO-8

2

–40°C to +85°C 8-Lead SOIC SO-8
AD8350AR20-EVAL Evaluation Board (20 dB)

NOTES

1

13" Reels of 2500 each.

2

7" Reels of 750 each.

PIN FUNCTION DESCRIPTIONS

Pin Function Description

1, 8 IN+, IN– Differential Inputs. IN+ and IN–

should be ac-coupled (pins have a dc
bias of midsupply). Differential input
impedance is 200 Ω.

2 ENBL Power-up Pin. A high level (5 V) en-

ables the device; a low level (0 V) puts
device in sleep mode.

3V

CC

Positive Supply Voltage. +5 V to +10V.

4, 5 OUT+, OUT– Differential Outputs. OUT+ and

OUT– should be ac-coupled (pins have
a dc bias of midsupply). Differential
input impedance is 200 Ω.

6, 7 GND Common External Ground Reference.

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–

REV. 0

Typical Performance Characteristics–

FREQUENCY – MHz

ISOLATION – dB

–10

1

–15

–20

–25

–30

10 100 1k 10k

VCC = 10V

VCC = 5V

AD8350

50

40

30

20

SUPPLY CURRENT – mA

10

0
–40

–20

VCC = 10V

VCC = 5V

0

20 40 60 80

TEMPERATURE – 8C

Figure 1. Supply Current vs.
Temperature

350

300

250

200

IMPEDANCE – V

150

VCC = 10V

VCC = 5V

20

15

10

GAIN – dB

5

0

1

10 100 1k 10k

FREQUENCY – MHz

VCC = 10V

VCC = 5V

Figure 2. AD8350-15 Gain (S21) vs.
Frequency

350

300

250

200

IMPEDANCE – V

150

VCC = 10V

VCC = 5V

25

20

15

GAIN – dB

10

5

1

10 100 1k 10k

VCC = 10V

VCC = 5V

FREQUENCY – MHz

Figure 3. AD8350-20 Gain (S21) vs.
Frequency

500

400

300

200

IMPEDANCE – V

100

VCC = 10V

VCC = 5V

100

1

10 100 1k

FREQUENCY – MHz

Figure 4. AD8350-15 Input Imped­ ance vs. Frequency

500

400

300

200

IMPEDANCE – V

100

0

1

10 100 1k

FREQUENCY – MHz

VCC = 5V

VCC = 10V

Figure 7. AD8350-20 Output Imped­ance vs. Frequency

100

1

10 100 1k

FREQUENCY – MHz

Figure 5. AD8350-20 Input Imped­ance vs. Frequency

–5

–10

–15

ISOLATION – dB

–20

–25

1

10 100 1k 10k

FREQUENCY – MHz

VCC = 10V

VCC = 5V

Figure 8. AD8350-15 Isolation (S12)
vs. Frequency

0

1

10 100 1k

FREQUENCY – MHz

Figure 6. AD8350-15 Output Imped­ance vs. Frequency

Figure 9. AD8350-20 Isolation (S12)
vs. Frequency

REV. 0

–5–

AD8350

p

FREQUENCY – MHz

1dB COMPRESSION – dBm (Re: 50V)

0

100 200 300 400 500 600

7.5

5.0

2.5

0

–2.5

–5.0

VCC = 10V

VCC = 5V

INPUT REFERRED

10.0

–40

V

= 1V p-p

OUT

–45

–50

–55

–60

–65

DISTORTION – dBc

–70

–75

–80

0

50 100 150 200 250 300

FUNDAMENTAL FREQUENCY – MHz

HD2 (VCC = 10V)

HD2 (VCC = 5V)

HD3 (VCC = 5V)

HD3 (VCC = 10V)

Figure 10. AD8350-15 Harmonic
Distortion vs. Frequency

–45

FO = 50MHz

–55

–65

DISTORTION – dBc

–75

HD2 (VCC = 5V)

HD3 (VCC = 5V)

HD2 (VCC = 10V)

HD3 (VCC = 10V)

–40

V

= 1V p-p

OUT

–45

–50

–55

–60

–65

DISTORTION – dBc

–70

–75

–80

0

HD2 (VCC = 5V)

HD2 (VCC = 10V)

HD3 (VCC = 5V)

HD3 (VCC = 10V)

50 100 150 200 250 300

FUNDAMENTAL FREQUENCY – MHz

Figure 11. AD8350-20 Harmonic
Distortion vs. Frequency

60

55

50

45

40

OIP2 – dBm (Re: 50V)

35

VCC = 10V

VCC = 5V

–45

FO = 50MHz

HD3 (VCC = 5V)

HD2 (VCC = 5V)

–55

–65

DISTORTION – dBc

–75

–85

0

0.5 1 1.5 2 2.5 3 3.5
OUTPUT VOLTAGE – V p-p

HD2 (VCC = 10V)

HD3 (VCC = 10V)

Figure 12. AD8350-15 Harmonic Dis­tortion vs. Differential Output Voltage

60

55

50

45

40

OIP2 – dBm (Re: 50V)

35

VCC = 10V

VCC = 5V

–85

0

0.5 1 1.5 2 2.5 3 3.5
OUTPUT VOLTAGE – V p-

Figure 13. AD8350-20 Harmonic Dis­tortion vs. Differential Output Voltage

35

30

25

20

15

OIP3 – dBm (Re: 50V)

10

5

0

50 100 150 200 250 300

VCC = 10V

VCC = 5V

FREQUENCY – MHz

Figure 16. AD8350-15 Output
Referred IP3 vs. Frequency

30

0

50 100 150 200 250 300

FREQUENCY – MHz

Figure 14. AD8350-15 Output
Referred IP2 vs. Frequency

35

30

25

20

15

OIP3 – dBm (Re: 50V)

10

5

0

50 100 150 200 250 300

VCC = 10V

VCC = 5V

FREQUENCY – MHz

Figure 17. AD8350-20 Output
Referred IP3 vs. Frequency

30

0

50 100 150 200 250 300

FREQUENCY – MHz

Figure 15. AD8350-20 Output
Referred IP2 vs. Frequency

Figure 18. AD8350-15 1 dB Compres­sion vs. Frequency

–6–

REV. 0

AD8350

7.5

)

V

5.0

2.5

0

–2.5

–5.0

1dB COMPRESSION – dBm (Re: 50

–7.5

0

VCC = 5V

100 200 300 400 500 600

FREQUENCY – MHz

INPUT REFERRED

VCC = 10V

Figure 19. AD8350-20 1 dB Compres­sion vs. Frequency

25
20
15
10

5
0

GAIN – dB

–5

–10
–15
–20

1

2345678910

VCC – Volts

AD8350-20

AD8350-15

Figure 22. AD8350 Gain (S21) vs.
Supply Voltage

10

9

8

7

NOISE FIGURE – dB

6

5

0

VCC = 10V

VCC = 5V

50 100 150 200 250 300 350 400 450 500

FREQUENCY – MHz

Figure 20. AD8350-15 Noise Figure
vs. Frequency

100

50

0

–50

–100

–150

OUTPUT OFFSET – mV

–200

–250

–40

–20

V

+ (VCC = 5V)

OUT

V

– (VCC = 5V)

OUT

V

+ (VCC = 10V)

OUT

V

– (VCC = 10V)

OUT

0

20 40 60 80

TEMPERATURE – 8C

Figure 23. AD8350 Output Offset
Voltage vs. Temperature

10

9

8

7

NOISE FIGURE – dB

6

5

0

50 100 150 200 250 300 350 400 450 500

VCC = 10V

VCC = 5V

FREQUENCY – MHz

Figure 21. AD8350-20 Noise Figure
vs. Frequency

–20

VCC = 5V

–30

–40

–50

–60

PSRR – dB

–70

–80

–90

AD8350-20

AD8350-15

1

10 100 1k

FREQUENCY – MHz

Figure 24. AD8350 PSRR vs.
Frequency

–20

VCC = 5V

–30

–40

–50

–60

PSRR – dB

–70

–80

–90

1

AD8350-20

AD8350-15

10 100 1k

FREQUENCY – MHz

Figure 25. AD8350 CMRR vs.
Frequency

REV. 0

VCC = 5V

30ns

500mV

V

ENBL

OUT

5V

Figure 26. AD8350 Power-Up/Down
Response Time

–7–

AD8350

APPLICATIONS
Using the AD8350

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 0.1µF capacitor.
The ENBL pin is tied to the positive supply or to +5V (when

= +10 V) for normal operation and should be pulled to

V

CC

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.

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 V

= +10 V and V

CC

= 1 V p-p, –59 dBc was measured

OUT

for the second harmonic on AD8350-15).

Reactive Matching

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.

C1

7

8

5

6

AD8350

L1 L2

C1

ENBL (+5V)

–

+

1

3

2

+VS (+5V TO +10V)

4

C2

0.1mF

C2

C2

Figure 29. Reactively Matching the Input and Output

SOURCE

Z = 100V

C2

0.001mF

7

8

6

C4

5

0.001mF

AD8350

–

+

1

3

2

Z = 100V

C1

0.001mF
ENBL (+5V)

+V

S

4

C5

0.1mF

(+5V TO +10V)

C3

0.001mF

Figure 27. Basic Connections for Differential Drive

C5

0.1mF

C4

0.001mF

C3

0.001mF

SOURCE

Z = 200V

C2

0.001mF

C1

0.001mF
ENBL (+5V)

7

8

AD8350

–

1

2

(+5V TO +10V)

+V

S

6

5

+

3

4

LOAD

Z = 200V

LOAD

Z = 200V

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
7

8

5

6

AD8350

–

+

1

3

2

4

C1

L1

ENBL

(+5V)

+V

(+5V TO +10V)

S

C2

0.1mF

C2

L2

C2

Figure 30. Matching Circuit for Single-Ended Drive

C1

0.001mF

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 200Ω 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.

To drive and load the board differentially, transformers T1 and
T2 should be removed and replaced with four 0Ω 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.

C3

0.001mF

IN–

IN+

R1

T1: TC4-1W

0V

(MINI CIRCUITS)

61

TEST IN

7

6

+

3

2

+V

S

(MINI CIRCUITS)

5

4

C5

0.1mF

T4: TC4-1W

16

R2
0V

(OPEN)

C2

0.001mF

+V

L1

A

3

S

2

B

T3: TC4-1W

(MINI CIRCUITS)

61

8

AD8350

1

SW1
1

–

Figure 31. AD8350 Evaluation Board

L2
(OPEN)

C4

0.001mF

R3
0V

TEST OUT

T2: TC4-1W

(MINI CIRCUITS)

1

6

R4

0V

OUT–

OUT+

REV. 0

–9–

AD8350

Table I. Typical S Parameters AD8350-15: VCC = 5 V, Differential Input Signal.
Z

(diff) = 50 ⍀, Z

SOURCE

(diff) = 50 ⍀

LOAD

Frequency
(MHz) S11 S12 S21 S22

50 0.791 ∠ –3° 0.068 ∠ 177° 2.73 ∠ –3° 0.795 ∠ –2°
100 0.787 ∠ –6° 0.071 ∠ 174° 2.79 ∠ –7° 0.794 ∠ –5°
150 0.778 ∠ –9° 0.070 ∠ 172° 2.91 ∠ –11° 0.787 ∠ –7°
200 0.766 ∠ –13° 0.072 ∠ 168° 3.06∠ –16° 0.779 ∠ –10°
250 0.749 ∠ –17° 0.074 ∠ 165° 3.24∠ –21° 0.768 ∠ –12°

Table II. Typical S Parameters AD8350-20: VCC = 5 V, Differential Input Signal.
Z

SOURCE

(diff) = 50 ⍀, Z

(diff) = 50 ⍀

LOAD

Frequency
(MHz) S11 S12 S21 S22

50 0.810 ∠ –4° 0.046 ∠ 176° 4.82 ∠ –2.5° 0.822 ∠ –3°
100 0.795 ∠ –8° 0.043 ∠ 173° 4.99 ∠ –6.16° 0.809 ∠ –5°
150 0.790 ∠ –12° 0.045 ∠ 169° 5.30∠ –9.82 ° 0.807 ∠ –8°
200 0.776 ∠ –17° 0.046 ∠ 165° 5.71∠ –14.89 ° 0.795 ∠ –10°
250 0.757 ∠ –22° 0.048 ∠ 162° 6.25∠ –21.29 ° 0.783 ∠ –13°

Table III. Typical S Parameters AD8350-15: VCC = 5 V, Single-Ended Input Signal.
Z

SOURCE

(diff) = 50 ⍀, Z

(diff) = 50 ⍀

LOAD

Frequency
(MHz) S11 S12 S21 S22

50 0.718 ∠ –6° 0.068 ∠ 177° 2.62 ∠ –4° 0.798 ∠ –3°
100 0.701 ∠ –12° 0.066 ∠ 173° 2.66 ∠ –10° 0.794 ∠ –6°
150 0.683 ∠ –19° 0.067 ∠ 167° 2.76∠ –15° 0.789 ∠ –10°
200 0.657 ∠ –24° 0.069 ∠ 163° 2.86∠ –22° 0.776 ∠ –13°
250 0.625 ∠ –31° 0.070 ∠ 159° 2.98∠ –28° 0.763 ∠ –16°

Table IV. Typical S Parameters AD8350-20: VCC = 5 V, Single-Ended Input Signal.
Z

SOURCE

(diff) = 50 ⍀, Z

(diff) = 50 ⍀

LOAD

Frequency
(MHz) S11 S12 S21 S22

50 0.747 ∠ –7° 0.040 ∠ 175° 4.71 ∠ –4° 0.814 ∠ –3°
100 0.739 ∠ –14° 0.042 ∠ 170° 4.82 ∠ –9° 0.813 ∠ –6°
150 0.728 ∠ –21° 0.044 ∠ 166° 5.08∠ –15° 0.804 ∠ –10°
200 0.698 ∠ –29° 0.045 ∠ 161° 5.37 ∠ –22° 0.792 ∠ –13 °
250 0.659 ∠ –37° 0.048 ∠ 156 ° 5.76 ∠ –30° 0.774 ∠ –16°

–10–

REV. 0

0.1574 (4.00)

0.1497 (3.80)

PIN 1

0.0098 (0.25)

0.0040 (0.10)
SEATING

OUTLINE DIMENSIONS

Dimensions shown in inches and (mm).

8-Lead Plastic SOIC

(SO-8)

0.1 968 (5.00)

0.1 890 (4.80)

85

0.0500 (1.27)

PLANE

0.2440 (6.20)

0.2284 (5.80)

41

BSC

0.0192 (0.49)

0.0138 (0.35)

0.0688 (1.75)

0.0532 (1.35)

0.0098 (0.25)

0.0075 (0.19)

0.0196 (0.50)

0.0099 (0.25)

88

0.0500 (1.27)

08

0.0160 (0.41)

AD8350

C3577–8–4/99

3 458

REV. 0

PRINTED IN U.S.A.

–11–