MAX3822UCM+ Maxim Integrated, MAX3822UCM+ Datasheet

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MAX3822UCM+

Manufacturer Part Number
MAX3822UCM+
Description
Limiting Amplifiers Integrated Circuits (ICs)
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX3822UCM+

Rohs
yes
Factory Pack Quantity
250
The MAX3822 quad limiting amplifier is ideal for multi-
channel systems with data rates up to 2.5Gbps. The
MAX3822 operates from a single +3.3V supply, over
temperatures ranging from 0°C to +85°C. A channel-
select (CS) pin is provided to program single-, dual-, or
quad-channel operation. The disabled channels are
shut down to reduce power consumption. The output
interface for all four channels is CML.
The input can be driven from 20mVp-p to 1000mVp-p
differentially. The threshold voltage control is common
for all four channels and is programmable by an exter-
nal resistor. Four separate power detectors are incorpo-
rated to monitor the received signal level for each
channel. Individual TTL-compatible loss-of-power (LOP)
indicators assert low if the channel signal input is below
the programmed threshold. Typically 4dB LOP hystere-
sis (2dB optical) is provided to prevent chattering when
the input signal level is close to the threshold. A general
LOP indicator is also provided which asserts low if one
or more of the four inputs is in the LOP condition.
19-2144; Rev 2; 7/06
Typical Operating Circuit appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Optical System Interconnects
Multichannel Receiver Modules
Dense Digital Cross-Connects
ATM Switch Networks
High-Speed Parallel Links
________________________________________________________________ Maxim Integrated Products
+3.3V, 2.5Gbps Quad Limiting Amplifier
General Description
Applications
♦ Single +3.3V Supply
♦ Single-, Dual-, or Quad-Channel Operation at
♦ 700mW Total Power Dissipation (Quad-Channel
♦ 120ps Maximum Output Edge Speed
♦ Overall and Individual Channel Loss-of-Power
♦ Differential CML Outputs with On-Chip Back
♦ 30ps Maximum Deterministic Jitter
♦ 2ps Random Jitter
♦ Power-Down Feature Shuts Down Unused
♦ Operating Temperature Range: 0°C to +85°C
*Exposed pad.
**Contact factory for availability. Dice are designed to operate
from T
only at T
+Denotes lead-free package.
MAX3822UCM
MAX3822UCM+
MAX3822U/D
2.5Gbps
Operation)
(LOP) Indicator
Termination Resistors
Channels
A
IN1+
IN2+
IN3+
IN4+
IN1-
IN2-
IN3-
IN4-
V
V
V
V
TOP VIEW
PART
= 0°C to T
CC
CC
CC
CC
A
= +25°C.
10
11
12
1
2
3
4
5
6
7
8
9
A
= +85°C, but are tested and guaranteed
TEMP RANGE
Ordering Information
0°C to +85°C
0°C to +85°C
0°C to +85°C
TQFP-EP
MAX3822
Pin Configuration
PIN-PACKAGE
48 TQFP-EP*
48 TQFP-EP*
Dice**
Features
36
35
34
33
32
31
30
29
28
27
26
25
OUT1+
OUT1-
V
OUT2+
OUT2-
V
V
OUT3+
OUT3-
V
OUT4+
OUT4-
CC
CC
CC
CC
1

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MAX3822UCM+ Summary of contents

Page 1

... Maximum Deterministic Jitter ♦ 2ps Random Jitter ♦ Power-Down Feature Shuts Down Unused Channels ♦ Operating Temperature Range: 0°C to +85°C Applications PART MAX3822UCM MAX3822UCM+ MAX3822U/D *Exposed pad. **Contact factory for availability. Dice are designed to operate from T = 0° only +Denotes lead-free package ...

Page 2

Quad Limiting Amplifier ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) ........................................... -0.5V to +6.0V CC Differential Input Voltage Swing (IN1+ - IN1-), (IN2+ - IN2-), (IN3+ - IN3-), (IN4+ - IN4-) ..............................................2Vp-p Voltage at LOP1, LOP2, LOP3, LOP4, ...

Page 3

Quad Limiting Amplifier AC ELECTRICAL CHARACTERISTICS (V = +3.0V to +3.6V 0°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYMBOL Data Input Voltage Range Random Jitter Deterministic Jitter Data Output ...

Page 4

Quad Limiting Amplifier (V = +3.3V +25°C, unless otherwise noted DETERMINISTIC JITTER vs. DIFFERENTIAL INPUT VOLTAGE 100 200 300 400 500 600 700 ...

Page 5

Quad Limiting Amplifier PIN NAME 1 IN1+ Noninverted Data Input for Channel 1 2 IN1- Inverted Data Input for Channel 10, V +3.3V Supply Voltage CC 27, 30, 31 IN2+ Noninverted Data ...

Page 6

Quad Limiting Amplifier PIN NAME 26 OUT4+ Noninverted Data Output for Channel 4 28 OUT3- Inverted Data Output for Channel 3 29 OUT3+ Noninverted Data Output for Channel 3 32 OUT2- Inverted Data Output for Channel 2 33 ...

Page 7

Quad Limiting Amplifier CZ1+ LOW PASS OFFSET CORRECTION IN1+ BUFF GAIN IN1- VTH THRESHOLD CONTROL CHANNEL SELECT MAX3822 Figure 1. Functional Diagram up to 80mVp-p. This differential amplifier is designed to work with the power-detect ...

Page 8

... GND and may cause deterministic jitter through an increase of PWD. Each of the MAX3822’s integrated limiting amplifiers includes a DC cancellation loop that provides offset correction to the CML output signal in addition to low- 1.5nH frequency power-supply noise rejection. The DC can- OUT+ ...

Page 9

... Quad Limiting Amplifier Loss-Of-Power Logic The loss-of-power logic circuitry is asserted anytime the input power of one of the limiting amplifiers is observed below the threshold set comprised of two comparators and an S-R flip-flop to compare the outputs of the threshold-control and power-detect circuitry for each of the limiting amplifiers on the MAX3822 ...

Page 10

Quad Limiting Amplifier V ESD CC DIODES 30kΩ CS 40kΩ 20kΩ GND Figure 6. Channel-Select Interface foc = 2 π × Ω × C where 50dB is the gain of the offset-correction ...

Page 11

Quad Limiting Amplifier SIDE A 46.9 46.9 125.2 46.9 206.2 292.6 46.9 365.5 460.0 46.9 524.8 627.4 46.9 684.1 794.8 46.9 846.1 962.2 46.9 1005.4 1129.6 46.9 1167.4 1297.0 46.9 1326.7 1464.4 46.9 1486.0 1631.8 46.9 1645.3 1799.2 ...

Page 12

Quad Limiting Amplifier IN1+ IN1 IN2+ IN2 IN3+ IN3 IN4+ IN4- 12 ______________________________________________________________________________________ (90mil) Chip Topography OUT1+ OUT1 OUT2+ OUT2 (102mil OUT3+ OUT3- V ...

Page 13

Quad Limiting Amplifier (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 48L TQFP, 7x7x1.0mm EP OPTION 1 21-0065 ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, 48L TQFP, 7x7x1 ...

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