Analog Devices AD8151AST, AD8151 Datasheet

stream

ª

33  17, 3.2 Gb/s

a

FEATURES
Low Cost
33  17, Fully Differential, Nonblocking Array

3.2 Gb/s per Port NRZ Data Rate
Wide Power Supply Range: +3.3 V, –3.3 V
Low Power

425 mA (Outputs Enabled)

35 mA (Outputs Disabled)
LV PECL and LV ECL Compatible
CMOS/TTL-Level Control Inputs: 3 V to 5 V
Low Jitter
No Heat Sinks Required
Drives a Backplane Directly
Programmable Output Current

Optimize Termination Impedance

User-Controlled Voltage at the Load

Minimize Power Dissipation
Individual Output Disable for Busing and Reducing

Power
Double Row Latch
Buffered Inputs
Available in 184-Lead LQFP

CS

RE

WE

UPDATE

RESET

Digital Crosspoint Switch

AD8151*

FUNCTIONAL BLOCK DIAGRAM

INP INN

33

7

D

5

A

OUTPUT

ADDRESS

DECODER

FIRST
RANK

17 

7-BIT

LATCH

SECOND

RANK

17 

7-BIT

LATCH

DIFFERENTIAL

INPUT

DECODERS

AD8151

33  17

SWITCH
MATRIX

33

17

OUTP

17

OUTN

APPLICATIONS
High-Speed Serial Backplane Routing to OC-48 with FEC
Fiber Optic Network Switching
Fiber Channel
LVDS

PRODUCT DESCRIPTION

AD8151 is a member of the X

stream

line of products and is

a breakthrough in digital switching, offering a large switch array
(33 × 17) on very little power, typically less than 1.5 W. Addi­tionally, it operates at data rates in excess of 3.2 Gb/s per port,
making it suitable for Sonet OC-48 with 8b/10b Forward Error
Correction (FEC). Further, the pricing of the AD8151 makes
it affordable enough to be used for lower data rates as well.

The AD8151’s flexible supply voltages allow the user to operate
with either PECL or ECL data levels and will operate down to

3.3 V for further power reduction. The control interface is CMOS/
TTL compatible (3 V to 5 V).

Its fully differential signal path reduces jitter and crosstalk while
allowing the use of smaller single-ended voltage swings.

The AD8151 is offered in a 184-lead LQFP package that operates
over the extended commercial temperature range of 0°C to 85°C.

*Patent Pending.

X

stream

is a trademark of Analog Devices, Inc.

Figure 1. Eye Pattern, 3.2 Gb/s, PRBS 23

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 that
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] www.analog.com
Fax: [phone] © Analog Devices, Inc., 2001

AD8151–SPECIFICATIONS

(@ 25C, VCC = 3.3 V to 5 V, VEE = 0 V, RL = 50  (see TPC 22), I
otherwise noted.)

= 16 mA, unless

OUT

Parameter Conditions Min Typ Max Unit

DYNAMIC PERFORMANCE

Max Data Rate/Channel (NRZ) 2.5 3.2 Gb/s
Channel Jitter Data Rate = 3.2 Gb/s 52 ps p-p
RMS Channel Jitter 8ps
Propagation Delay Input to Output 650 ps
Propagation Delay Match ±50 ±100 ps
Output Rise/Fall Time 20% to 80% 100 ps

INPUT CHARACTERISTICS

Input Voltage Swing Single-Ended 200 1000 mV p-p
Input Bias Current 2 µA
Input Capacitance 2pF
Input V

High VCC – 1.2 V

IN

CC

V

Input VIN Low VCC – 2.4 VCC – 1.4 V

OUTPUT CHARACTERISTICS

Output Voltage Swing Differential (See TPC 22) 800 mV p-p
Output Voltage Range V

– 1.8 V

CC

CC

V
Output Current 5 25 mA
Output Capacitance 2pF
Output V
Output V

High VCC – 1.8 V

OUT

Low V

OUT

CC

V

POWER SUPPLY

Operating Range

PECL, V
ECL, V
V
V

EE

DD

SS

CC

VEE = 0 V 3.0 5.25 V
VCC = 0 V –5.25 –3.0 V

35V

0V

Quiescent Current

V

DD

V

EE

All Outputs Enabled, I

to T

T

MIN

MAX

= 16 mA 425 mA

OUT

2mA

450 mA

All Outputs Disabled 35 mA

THERMAL CHARACTERISTICS

Operating Temperature Range 0 85 °C

θ

JA

LOGIC INPUT CHARACTERISTICS V

Input V

High 1.9 V

IN

= 3 V dc to 5 V dc

DD

30 °C/W

DD

V
Input VIN Low 0 0.9 V

–2–

REV. 0

AD8151

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS

1

Supply Voltage

V

DD–VEE

V

CC

V

DD

V

SS

V

SS

V

DD

Internal Power Dissipation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.5 V

– VEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V

– VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V

– VEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V

– VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V

– VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V

2

AD8151 184-Lead Plastic LQFP (ST) . . . . . . . . . . . . 4.2 W

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . 2.0 V

Storage Temperature Range . . . . . . . . . . . . –65°C to +125°C

Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C

NOTES

1

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 affect device reliability.

2

Specification is for device in free air (TA = 25°C):

184-lead plastic LQFP (ST): θJA = 30°C/W.

MAXIMUM POWER DISSIPATION

The maximum power that can be safely dissipated by the AD8151
is limited by the associated rise in junction temperature. The
maximum safe junction temperature for plastic encapsulated
devices is determined by the glass transition temperature of
the plastic, approximately 150°C. Temporarily exceeding this
limit may cause a shift in parametric performance due to a change
in the stresses exerted on the die by the package. Exceeding a
junction temperature of 175°C for an extended period can result in
device failure.

To ensure proper operation, it is necessary to observe the maxi­mum power derating curves shown in Figure 2.

6.0

5.0

4.0

3.0

2.0

MAXIMUM POWER DISSIPATION – Watts

1.0
–10 0 10 2030405060708090

AMBIENT TEMPERATURE – C

TJ = 150C

Figure 2. Maximum Power Dissipation vs. Temperature

ORDERING GUIDE

Temperature Package Package

Model Range Description Option

AD8151AST 0°C to 85°C 184-Lead Plastic LQFP ST-184

(20 mm × 20 mm)

AD8151-EVAL Evaluation Board

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 AD8151 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.

REV. 0

–3–

AD8151

OUT16N
OUT16P

VEEA16

V
IN20P
IN20N

V
IN21P
IN21N

V
IN22P
IN22N

V
IN23P
IN23N

V
IN24P
IN24N

V
IN25P
IN25N

V
IN26P
IN26N

V
IN27P
IN27N

V
IN28P
IN28N

V
IN29P
IN29N

V
IN30P
IN30N

V
IN31P
IN31N

V
IN32P
IN32N

V

V

V

V

PIN CONFIGURATION

REF

EE

VEEIN19N

IN19P

VEEIN18N

IN18P

VEEIN17N

IN17P

VEEIN16N

IN16P

VEEVCCVDDRESETCSREWEUPDATEA0A1A2A3A4D0D1D2D3D4D5D6

184

183

182

181

180

179

178

177

176

175

174

173

170

169

168

167

166

165

164

AD8151

184L LQFP

TOP VIEW

(Not to Scale)

A10

EE

V

OUT09P

OUT09N

163

160

159

157

156

155

154

OUT06P

OUT06N

A6

EE

V

OUT05N

153

161

A8

EE

V

OUT08P

158

A7

V

OUT07P

OUT07N

EE

162

68

6970717274757677787379808182848586

A9

EE

V

OUT08N

172

171

1

EE

EE

EE

EE

EE

EE

EE

EE

EE

EE

EE

EE

EE

EE

CC

EE

EE

PIN 1

2

IDENTIFIER

3
4

5

6

7

8

9

10

11

12
13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

4748495051525354555657

EE

V

A15

EE

V

OUT15P

OUT15N

OUT14P

OUT14N

A14

EE

V

OUT13N

A13

EE

V

OUT13P

OUT12N

596061626364656667

58

A12

A11

EE

EE

V

OUT11P

OUT11N

V

OUT10N

OUT10P

OUT12P

VSSREF

152

151

A5

EE

V

OUT05P

CCVEE

V

V

150

149

A4

V

OUT04P

OUT04N

IN15N

147

148

EE

OUT03N

IN15P

VEEIN14N

146

145

144

87838889909192

A3

EE

V

OUT03P

OUT02N

IN14P

143

OUT02P

VEEIN13N

142

141

A2

EE

V

OUT01N

EE

IN13P

V

140

139

EE

V

OUT01P

138

137

136

135

134

133

132

131

130

129

128

127

126

125

124

123

122

121

120

119

118

117

116
115

114

113

112

111

110

109

108

107

106

105

104

103

102

101

100

99

98

97

96

95

94

93

V

EE

IN12N
IN12P
V

EE

IN11N
IN11P
V

EE

IN10N
IN10P
V

EE

IN09N
IN09P
V

EE

IN08N
IN08P
V

EE

IN07N
IN07P
V

EE

IN06N
IN06P
V

EE

IN05N
IN05P
V

EE

IN04N
IN04P
V

EE

IN03N
IN03P
V

EE

IN02N
IN02P
V

EE

IN01N
IN01P
V

EE

IN00N
IN00P
V

EE

V

CC

VEEA0
OUT00P
OUT00N
VEEA1
V

EE

–4–

REV. 0

PIN FUNCTION DESCRIPTIONS

Pin No. Signal Type Description

1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31, V

EE

34, 37, 40, 42, 46, 47, 92, 93, 99, 102, Points Labeled V

Power Supply Most Negative PECL Supply (Common with Other

)

EE

105, 108, 111, 114, 117, 120, 123,
126, 129, 132, 135, 138, 139, 142,
145, 148, 172, 175, 178, 181, 184

2 IN20P PECL/ECL High-Speed Input
3 IN20N PECL/ECL High-Speed Input Complement
5 IN21P PECL/ECL High-Speed Input
6 IN21N PECL/ECL High-Speed Input Complement
8 IN22P PECL/ECL High-Speed Input
9 IN22N PECL/ECL High-Speed Input Complement
11 IN23P PECL/ECL High-Speed Input
12 IN23N PECL/ECL High-Speed Input Complement
14 IN24P PECL/ECL High-Speed Input
15 IN24N PECL/ECL High-Speed Input Complement
17 IN25P PECL/ECL High-Speed Input
18 IN25N PECL/ECL High-Speed Input Complement
20 IN26P PECL/ECL High-Speed Input
21 IN26N PECL/ECL High-Speed Input Complement
23 IN27P PECL/ECL High-Speed Input
24 IN27N PECL/ECL High-Speed Input Complement
26 IN28P PECL/ECL High-Speed Input
27 IN28N PECL/ECL High-Speed Input Complement
29 IN29P PECL/ECL High-Speed Input
30 IN29N PECL/ECL High-Speed Input Complement
32 IN30P PECL/ECL High-Speed Input
33 IN30N PECL/ECL High-Speed Input Complement
35 IN31P PECL/ECL High-Speed Input
36 IN31N PECL/ECL High-Speed Input Complement
38 IN32P PECL/ECL High-Speed Input
39 IN32N PECL/ECL High-Speed Input Complement
41, 98, 149, 171 V

CC

Power Supply Most Positive PECL Supply (Common with Other

Points Labeled V

CC

)
43 OUT16N PECL/ECL High-Speed Output Complement
44 OUT16P PECL/ECL High-Speed Output
45 V

A16 Power Supply Most Negative PECL Supply (Unique to This Output)

EE

48 OUT15N PECL/ECL High-Speed Output Complement
49 OUT15P PECL/ECL High-Speed Output
50 V

A15 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

51 OUT14N PECL/ECL High-Speed Output Complement
52 OUT14P PECL/ECL High-Speed Output
53 V

A14 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

54 OUT13N PECL/ECL High-Speed Output Complement
55 OUT13P PECL/ECL High-Speed Output
56 V

A13 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

57 OUT12N PECL/ECL High-Speed Output Complement
58 OUT12P PECL/ECL High-Speed Output
59 V

A12 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

60 OUT11N PECL/ECL High-Speed Output Complement
61 OUT11P PECL/ECL High-Speed Output

AD8151

REV. 0

–5–

AD8151

Pin No. Signal Type Description

62 V
63 OUT10N PECL/ECL High-Speed Output Complement
64 OUT10P PECL/ECL High-Speed Output
65 V
66 OUT09N PECL/ECL High-Speed Output Complement
67 OUT09P PECL/ECL High-Speed Output

68 V
69 OUT08N PECL/ECL High-Speed Output Complement
70 OUT08P PECL/ECL High-Speed Output

71 V
72 OUT07N PECL/ECL High-Speed Output Complement
73 OUT07P PECL/ECL High-Speed Output
74 V
75 OUT06N PECL/ECL High-Speed Output Complement
76 OUT06P PECL/ECL High-Speed Output
77 V
78 OUT05N PECL/ECL High-Speed Output Complement
79 OUT05P PECL/ECL High-Speed Output
80 V
81 OUT04N PECL/ECL High-Speed Output Complement
82 OUT04P PECL/ECL High-Speed Output
83 V
84 OUT03N PECL/ECL High-Speed Output Complement
85 OUT03P PECL/ECL High-Speed Output
86 V
87 OUT02N PECL/ECL High-Speed Output Complement
88 OUT02P PECL/ECL High-Speed Output
89 V
90 OUT01N PECL/ECL High-Speed Output Complement
91 OUT01P PECL/ECL High-Speed Output
94 V
95 OUT00N PECL/ECL High-Speed Output Complement
96 OUT00P PECL/ECL High-Speed Output
97 V
100 IN00P PECL/ECL High-Speed Input
101 IN00N PECL/ECL High-Speed Input Complement
103 IN01P PECL/ECL High-Speed Input
104 IN01N PECL/ECL High-Speed Input Complement
106 IN02P PECL/ECL High-Speed Input
107 IN02N PECL/ECL High-Speed Input Complement
109 IN03P PECL/ECL High-Speed Input
110 IN03N PECL/ECL High-Speed Input Complement
112 IN04P PECL/ECL High-Speed Input
113 IN04N PECL/ECL High-Speed Input Complement
115 IN05P PECL/ECL High-Speed Input
116 IN05N PECL/ECL High-Speed Input Complement
118 IN06P PECL/ECL High-Speed Input
119 IN06N PECL/ECL High-Speed Input Complement
121 IN07P PECL/ECL High-Speed Input
122 IN07N PECL/ECL High-Speed Input Complement

A11 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A10 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A9 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A8 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A7 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A6 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A5 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A4 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A3 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A2 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A1 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

A0 Power Supply Most Negative PECL Supply (Unique to this Output)

EE

–6–

REV. 0

AD8151

Pin No. Signal Type Description

124 IN08P PECL/ECL High-Speed Input
125 IN08N PECL/ECL High-Speed Input Complement
127 IN09P PECL/ECL High-Speed Input
128 IN09N PECL/ECL High-Speed Input Complement
130 IN10P PECL/ECL High-Speed Input
131 IN10N PECL/ECL High-Speed Input Complement
133 IN11P PECL/ECL High-Speed Input
134 IN11N PECL/ECL High-Speed Input Complement
136 IN12P PECL/ECL High-Speed Input
137 IN12N PECL/ECL High-Speed Input Complement
140 IN13P PECL/ECL High-Speed Input
141 IN13N PECL/ECL High-Speed Input Complement
143 IN14P PECL/ECL High-Speed Input
144 IN14N PECL/ECL High-Speed Input Complement
146 IN15P PECL/ECL High-Speed Input
147 IN15N PECL/ECL High-Speed Input Complement
150 V

151 REF R-Program Connection Point for Output Logic Pull-Down

152 V
153 D6 TTL Enable/Disable Output
154 D5 TTL (32) MSB Input Select
155 D4 TTL (16)
156 D3 TTL (8)
157 D2 TTL (4)
158 D1 TTL (2)
159 D0 TTL (1) LSB Input Select
160 A4 TTL (16) MSB Output Select
161 A3 TTL (8)
162 A2 TTL (4)
163 A1 TTL (2)
164 A0 TTL (1) LSB Output Select
165 UPDATE TTL Second Rank Program
166 WE TTL First Rank Program
167 RE TTL Enable Readback
168 CS TTL Enable Chip to Accept Programming
169 RESET TTL Disable All Outputs (Hi-Z)
170 V
173 IN16P PECL/ECL High-Speed Input
174 IN16N PECL/ECL High-Speed Input Complement
176 IN17P PECL/ECL High-Speed Input
177 IN17N PECL/ECL High-Speed Input Complement
179 IN18P PECL/ECL High-Speed Input
180 IN18N PECL/ECL High-Speed Input Complement
182 IN19P PECL/ECL High-Speed Input
183 IN19N PECL/ECL High-Speed Input Complement

REF R-Program Connection Point for Output Logic Pull-Down

EE

Programming Resistor (Must be Connected to V

Programming Resistor

SS

DD

Power Supply Most Negative Control Logic Supply

Power Supply Most Positive Control Logic Supply

EE

)

REV. 0

–7–

AD8151

–Typical Performance Characteristics

TPC 1. Eye Pattern 2.5 Gb/s, PRBS 23

p-p = 43ps
STD DEV = 8ps

150mV/DIV

20ps/DIV

TPC 2. Jitter @ 2.5 Gb/s, PRBS 23

100

90

80

70

60

50

40

EYE WIDTH – %

30

20

10

0

% EYE WIDTH =

1.0 1.5 2.0 2.5 3.0 3.5

0.5

(CLOCK PERIOD – JITTER p-p)

CLOCK PERIOD

DATA RATE – Gb/s

TPC 3. Eye Width vs. Data Rate, PRBS 23

 100

TPC 4. Eye Pattern 3.2 Gb/s, PRBS 23

p-p = 53ps
STD DEV = 8ps

150mV/DIV

20ps/DIV

TPC 5. Jitter @ 3.2 Gb/s, PRBS 23

100

90

80

70

60

% EYE HEIGHT =

50

40

EYE HEIGHT – %

30

20

10

0

1.0 1.5 2.0 2.5 3.0 3.5

0.5

@ DATA RATE)

(V

OUT

V

@ 0.5Gb/s

OUT

DATA RATE – Gb/s

 100

TPC 6. Eye Height vs. Data Rate, PRBS 23

–8–

REV. 0

AD8151

100

90

80

70

60

50

40

JITTER – ps

30

20

10

STANDARD DEVIATION

0

1.0

PEAK-PEAK

JITTER

1.5 2.0 2.5 3.0 3.5

DATA RATE – Gb/s

TPC 7. Jitter vs. Data Rate, PRBS 23

150mV/DIV

p-p = 38ps
STD DEV = 7.7ps

100

90

80

70

60

50

JITTER – ps

40

30

20

10

0

3.2Gb/s STD DEV

0 102030405060708090

3.2Gb/s JITTER

2.5Gb/s JITTER

2.5Gb/s STD DEV

TEMPERATURE – C

TPC 10. Jitter vs. Temperature, PRBS 23

150mV/DIV

100ps/DIV

TPC 8. Crosstalk, 2.5 Gb/s, PRBS 23, Attack Signal is OFF

p-p = 70ps
STD DEV = 8ps

150mV/DIV

100ps/DIV

TPC 9. Crosstalk, 2.5 Gb/s, PRBS 23, Attack Signal is ON

p-p = 32ps
STD DEV = 4.7ps

75ps/DIV

TPC 11. Crosstalk, 3.2 Gb/s, PRBS 23, Attack Signal is OFF

150mV/DIV

p-p = 70ps
STD DEV = 9ps

75ps/DIV

TPC 12. Crosstalk, 3.2 Gb/s, PRBS 23, Attack Signal is ON

REV. 0

–9–

AD8151

150mV/DIV

1.4ns/DIV

TPC 13. Response, 2.5 Gb/s, 32-Bit Pattern
1111 1111 0000 0000 0101 0101 0011 0011

100

90

80

70

60

50

40

P-P JITTER – ps

30

3.2Gb/s JITTER

20

10

0

0.2 0.3 0.5 0.6 0.7 0.8 0.9 10.4

2.5Gb/s JITTER

INPUT AMPLITUDE – V

TPC 14. Jitter vs. Single-Ended Input Amplitude, PRBS 23

150mV/DIV

1.1ns/DIV

TPC 16. Response, 3.2 Gb/s, 32-Bit Pattern
1111 1111 0000 0000 0101 0101 0011 0011

100

90

80

70

60

50

40

P-P JITTER – ps

30

20

10

0
–5.0 –4.8 –4.6 –4.4 –4.2 –4.0 –3.8 –3.6 –3.4 –3.2 –3.0

3.2Gb/s

2.5Gb/s

– V

V

EE

TPC 17. Jitter vs. Supply, PRBS 23

100

90

80

70

60

3.2Gb/s

50

40

P-P JITTER – ps

30

20

10

0
–1.6 –1.4 –1.2 –1.0 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6

2.5Gb/s

VIH – V

TPC 15. Jitter vs. VIH, PRBS 23

100

90

80

70

3.2Gb/s

60

50

2.5Gb/s

40

P-P JITTER – ps

30

20

10

0

–1.4 –1.2 –1.0 –0.8 –0.6 –0.4 –0.2 0 0.2

V

– V

OH

TPC 18. Jitter vs. VOH, PRBS 23, Output Amplitude = 0.4 V
Single-Ended

–10–

REV. 0

AD8151

100

90

80

70

60

50

40

FREQUENCY

30

20

10

0

550 570 590 610 630 650 670 690 710 730

PROPAGATION DELAY – ps

TPC 19. Variation in Channel-to-Channel Delay,
All 561 Points

100

90

80

70

2.5Gb/s

60

50

3.2Gb/s

40

P-P JITTER – ps

30

20

10

0

5

10 15 20 25

OUTPUT CURRENT – mA

TPC 20. Jitter vs. I

, PRBS 23

OUT

200

150

100

50

0

–50

–100

PROPAGATION DELAY – ps

–150

–200

–100 –80 –60 –40 –20 0 20 40 60 80 100

NORMALIZED TEMPERATURE – C

TPC 21. Propagation Delay, Normalized at 25°C vs.
Temperature

V

V

TT

CC

49.9

P

N

V

49.9

EE

V

TT

HIGH-SPEED

SAMPLING

OSCILLOSCOPE

50

50

PRBS

GENERATOR

DATA OUT

DATA OUT

V

CC

1.65k

–6dB

–6dB

1.65k

V

= 0V, VEE = –3.3V, VTT = –1.6V, VDD = 5V, VSS = 0V

CC

= 1.54k, I

R

SET

VIN = 0.8V p-p EXCEPT AS NOTED

OUT

AD8151

P

IN OUT

105

N

V

EE

= 16mA, VOH = –0.8V, VOL = –1.2V

TPC 22. Test Circuit

REV. 0

–11–