MAX3861ETG+ Maxim Integrated Products, MAX3861ETG+ Datasheet

IC AMP POST W/AGC 24-TQFN-EP

MAX3861ETG+

Manufacturer Part Number
MAX3861ETG+
Description
IC AMP POST W/AGC 24-TQFN-EP
Manufacturer
Maxim Integrated Products
Type
Postamplifierr
Datasheet

Specifications of MAX3861ETG+

Applications
Optical Networks
Mounting Type
Surface Mount
Package / Case
24-TQFN Exposed Pad
Operating Supply Voltage
3.3 V
Supply Current
94 mA
Operating Temperature Range
+ 150 C
Mounting Style
SMD/SMT
Number Of Channels
1
Power Dissipation
1350 mW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3861 is a low-power amplifier with automatic
gain control (AGC), designed for WDM transmission
systems employing optical amplifiers and requiring a
vertical threshold adjustment after the post amp.
Operating from a single 3.3V supply, this AGC amplifier
linearly amplifies/attenuates the input signal while main-
taining a fixed output-voltage swing at data rates up to
2.7Gbps. The input and output are on-chip terminated
to match 50Ω interfaces.
This amplifier has a small-signal bandwidth of 3.4GHz
and an input-referred noise of 0.26mV
input signal range of 6mV
MAX3861 delivers a constant output amplitude
adjustable from 400mV
output swing is controlled within 0.2dB over a 16dB
input range. The MAX3861 provides a received-signal-
strength indicator (RSSI) that is linear, within 2.5%, for
input signal levels up to 100mV
detect (SD) with programmable threshold.
19-2342; Rev 2; 2/05
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.
2.7Gbps Post Amp with Automatic Gain Control
2.7Gbps
MAXIM
TIA
OC-48/STM-16 Transmission Systems
WDM Optical Receivers
Long-Reach Optical Receivers
Continuous Rate Receivers
CONTROLLED IMPEDANCE LINE
50kΩ
R
RSSI
Typical Application Circuit
50Ω
50Ω
0.22µF
1.8kΩ
R
TH
C
CZ
0.1µF
0.1µF
________________________________________________________________ Maxim Integrated Products
CZ+
CZ-
IN+
IN-
TH
SD
RSSI
General Description
P-P
P-P
CD+
MAX3861
0.1µF
C
EN
to 920mV
CD
to 1200mV
CD-
P-P
OUT+
OUT-
OSM
V
CG+
CG-
Applications
REF
SC
and an input signal
P-P
P-P
RMS
50Ω
50Ω
. Variation in
C
2200pF
CG
(46dB), the
. Over an
R
50kΩ
OSM
MAX3873
MAXIM
CDR
♦ Single 3.3V Power Supply
♦ 72mA Supply Current
♦ 3.4GHz Small-Signal Bandwidth
♦ 0.26mV
♦ 6mV
♦ Input Signal Detect with Programmable Threshold
♦ RSSI (Linear Up to 100mV
♦ Adjustable Output Amplitude
♦ 0.2dB Output Voltage Variation (Over 16dB Input
M AX 3861E TG + - 40°C to + 85°C
M AX 3861E GG - 40°C to + 85°C
+Denotes lead-free package.
*EP = Exposed pad.
Signal Variation)
PART
TOP VIEW
Pin Configurations continued at end of data sheet.
*NOTE: MAXIM RECOMMENDS SOLDERING THE EXPOSED PAD TO GROUND.
P-P
V
V
IN+
IN-
TH
EN
CC
CC
RMS
to 1200mV
1
2
3
4
5
6
Input-Referred Noise
24
7
RANGE
TEMP
23
8
Ordering Information
P-P
THIN QFN*
MAX3861
22
9
Input Range (46dB)
Pin Configurations
21
10
P-P
PIN-
PACKAGE
24 Thi n Q FN - E P *
24 QFN-EP*
20
11
)
19
12
Features
18
17
16
15
14
13
SD
V
OUT+
OUT-
V
OSM
PACKAGE
CODE
CC
CC
T2444-3
G2444-1
1

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MAX3861ETG+ Summary of contents

Page 1

... RSSI EN R RSSI 50kΩ CONTROLLED IMPEDANCE LINE ________________________________________________________________ Maxim Integrated Products 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. ♦ Single 3.3V Power Supply ♦ 72mA Supply Current ♦ 3.4GHz Small-Signal Bandwidth ♦ ...

Page 2

Post Amp with Automatic Gain Control ABSOLUTE MAXIMUM RATINGS Supply Voltage ......................................................-0.5V to +4.0V Voltage at IN+, IN- ..........................(V CC Voltage at CZ+, CZ-, CG+, CG-, CD+, CD- ............................(V CC Voltage at SC, SD, EN, TH, OSM ...

Page 3

Post Amp with Automatic Gain Control ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V -40°C to +85°C. Typical values are PARAMETER SYMBOL Differential Output Amplitude ∆V Output Amplitude Variation Small Signal Bandwidth Low-Frequency ...

Page 4

Post Amp with Automatic Gain Control ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V -40°C to +85°C. Typical values are Note 5: See the Distribution of Differential Output Offset (Worst-Case Conditions) graph in ...

Page 5

Post Amp with Automatic Gain Control (V = +3.3V +25°C, unless otherwise noted POWER-SUPPLY NOISE REJECTION vs. FREQUENCY 1000mV IN P 10mV IN P-P ...

Page 6

Post Amp with Automatic Gain Control PIN NAME Input Signal Detect Threshold Programming Pin. Attach a resistor between this pin and ground program the input signal detect assert threshold. Leaving this pin open sets the signal ...

Page 7

Post Amp with Automatic Gain Control Detailed Description Figure functional diagram of the MAX3861 auto- matic gain-control amplifier. The MAX3861 is divided into three sections: main signal path, input signal detection, and output signal detection. The ...

Page 8

Post Amp with Automatic Gain Control Select the Coupling Capacitors When AC-coupling is desired, select coupling capaci- tors C and C to minimize the receiver’s determin- IN OUT istic jitter. Jitter is decreased as the input low-frequency cutoff (f ...

Page 9

Post Amp with Automatic Gain Control 200Ω Figure 4. TH Interface 56.2kΩ CD+ 2kΩ CD- 2kΩ 56.2kΩ Figure 6. CD Interface _______________________________________________________________________________________ CG+ CG- 200kΩ Figure 5. CG Interface V CC CZ+ CZ- Figure ...

Page 10

Post Amp with Automatic Gain Control Pin Configurations (continued) TOP VIEW IN+ 3 MAX3861 IN QFN* *NOTE: MAXIM ...

Page 11

Post Amp with Automatic Gain Control (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.) ___________________Chip Information TRANSISTOR COUNT: 952 PROCESS: SiGe Bipolar ______________________________________________________________________________________ Package ...

Page 12

Post Amp with Automatic Gain Control (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.) 12 ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE 12,16,20,24L QFN, 4x4x0.90 ...

Page 13

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2005 Maxim Integrated Products ...

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