F
EATURES
D
ESCRIPTION
T
OP
L
EVEL
D
IAGRAM
A
PPLICATIONS
O
RDERING
I
NFORMATION
MC2207
PIN Pre-amplifier with AGC for 3.3V Plastic Optical Fiber Applications to 250Mbps
PAGE -1-
q
Low cost IC. Fabricated in advanced sub-
micron pure-CMOS process.
q
Receiver sensitivity typically -29dBm @
155Mbps with a 4pF, 0.28A/W photodiode
q
200Mbps bandwidth and multi-pole roll off
allows a wide range of operation up to 250Mbps
q
Typical differential transimpedance at low
signal levels of 16K
q
AGC gives continuous operation to +6dBm
q
> 35dB power-supply noise rejection
q
Typical 100mW power comsumption at 3.3V
supply
q
Monitor O/P gives linear indication of recieved
optical power
q
Available in MSOP (mini-SO) package or
in die form
q
ATM POF
q
Low cost offfice and home networks
q
Automotive
q
IEEE 1394 (Firewire)
q
Digital Audio/Video
q
Residential Gateway
MC2207-AA
ADVANCED INFORMATION
The MC2207 is a low-noise, transimpedance ampli-
fier with AGC, manufactured in an advanced, yet low-
cost, sub-micron CMOS process.
The MC2207 is designed for use with low cost, higher
capacitance photodiodes (including Silicon diodes) in
Plastic Optical Fiber applications.
The MC2207 is available in both die or packaged form.
For optimum system performance die should be used,
mounted in close proximity with the photodetector.
The MC2207 is designed to be used with the Micro-
cosm MC2045 postamplifier IC. When combined with
a photodiode, the chipset forms a high performance,
low cost 3.3V receiver. It also compatible with the
MC2042 LED driver, for POF applications up to
300Mbps.
B
LOCK
D
IAGRAM
V
CC
V
CC
PIN
K
PIN
A
D
OUT
D
OUT
Gnd
Gnd
Gnd
Gnd
MON
AGC
+ +
- -
DC
Restore &
AGC
Voltage
Regulator
Voltage
Regulator
Band
Gap
2.6V
V
CC
V
CC
GND GND
GND
GND
2.6V
PINK
PINA
MON
8K
2.6V
D
OUT
D
OUT
Time Constant
~64
s
~
470pF
...100
Part
Pin-Package
MC2207DIEWP
Waffle Pack
MC2207WAFER
Expanded whole 8" wafer on a
10" grip ring
MC2207M10
10 pin MSOP (mini-SO)
MC2207
PIN Pre-amplifier with AGC for 3.3V Plastic Optical Fiber Applications to 250Mbps
MC2207-AA
ADVANCED INFORMATION
P
IN
D
ESCRIPTION
PAGE -2-
A
BSOLUTE
M
AXIMUM
R
ATINGS
R
ECOMMENDED
O
PERATING
C
ONDITIONS
Symbol
Parameter
Rating
Units
V
CC
Power Supply (V
CC
-Gnd)
4.5
V
T
A
Operating Ambient (SOIC8)
-40 to +85
C
T
J
Junction Temperature (die)
+150
C
T
STG
Storage Temperature
-65 to +150
C
DC C
HARACTERISTICS
Symbol
Parameter
Rating
Units
V
CC
Power supply (V
CC
-GND)
3.3 + 7.5%
V
T
J
Junction Temperature (die)
-40 to +100
C
T
A
Operating ambient
-40 to +85
C
Name
Function
GND
Ground pin. Connect to the most negative supply. All pins should be used
D
OUT
Non-Inverted Data Output. Differential output with D
OUT
V
CC
Power pin. Connect to most positive supply. Either or both pins may be used.
PINK
PIN Cathode connection. Connect photodiode between this pin and PINA Connect de-
coupling cap between here and GND (470pF typ).
PINA
PIN Anode connection. Connect photodiode between this pin and PINK.
D
OUT
Inverted Data Output. Differential output with D
OUT
MON
Optical input power monitor
Symbol
Parameter
Min.
Typ.
Max.
Units
V
B
PIN bias voltage (PINK - PINA)
1.5
1.6
1.8
V
V
CM
Common mode output voltage
-
V
CC
/2
-
V
I
CC
Supply current (no loads)
-
30
42
mA
MC2207
PIN Pre-amplifier with AGC for 3.3V Plastic Optical Fiber Applications to 250Mbps
MC2207-AA
ADVANCED INFORMATION
AC C
HARACTERISTICS
PAGE -3-
NOTE:
(1)
Measured with input capacitance, C
IN
=3pF (Total off chip capacitance)
(2)
Assuming photodiode responsivity of 0.28A/W, extinction ratio of 10dB and BER of 10
-12
BW=110MHz
(3)
The MC2207 is designed to drive a load >500
. Measurements are taken into >500
(4)
Measured at 10MHz
(5)
Multi-pole roll off.
Symbol
Parameter
Min.
Typ.
Max. Units
R
OUT
Output Impedance (single ended)
(3)
-
50
-
I
NOISE
Input referred Noise Current
(1),(2)
-
48
-
nA
rms
PIN(mean), min
Optical Sensitivity
(1),(2)
@ 155Mbps
-28
-29
-30
dBm
I
MAX
Input Overload Current
3
mA
pp
PIN(mean), max
Optical Saturation
(2)
+3
+6
-
dBm
G
Small signal Transimpedance
(3),(4)
Single ended
Diffferential
-
-
8
16
-
-
K
V
D
Differential Output Voltage
(3)
-
600
-
mV
BW
Bandwidth to -3dB point (optical)
(1,5)
200
-
-
MHz
T
PWD
Pulse Width Distortion
-
-
6
%
OS
PULSE
Pulse Overshoot
-
-
20
%
T
AGC
AGC Time constant
-
64
-
s
O
SAGC
AGC Overshoot
-
-
12
%
PSRR
Power Supply Rejection Ratio (<4MHz)
35
-
-
dBm
MC2207
PIN Pre-amplifier with AGC for 3.3V Plastic Optical Fiber Applications to 250Mbps
MC2207-AA
ADVANCED INFORMATION
PAGE -4-
TZA
The transimpedance amplifier consists of a high gain
single-ended CMOS amplifier, with a feedback resis-
tor. The feedback creates a virtual earth low imped-
ance at the input and virtually all of the input current
passes through the feedback resistor, defining the
voltage at the output. Advanced CMOS design tech-
niques are employed to maintain the stability of these
stages across all input conditions.
Single-ended amplifiers have inherently poor power
supply noise rejection. For this reason, an on-chip
low dropout linear regulator has been incorporated into
the design to give excellent noise rejection up to sev-
eral MHz. Higher frequency power supply noise is
removed by external decoupling.
The circuit is designed for PIN photodiodes in the
"grounded cathode" configuration, with the anode con-
nected to the input of the TZA and the cathode con-
nected to ac ground. Reverse dc bias is applied to
reduce the photodiode capacitance.
AGC
The MC2207 has been designed to operate over the
input range of +3dBm to 30dBm. This represents a
ratio of 1:2000, whereas the acceptable dynamic range
of the output is only 1:100 which implies a compres-
sion of 20:1 in the transimpedance. The design uses
a MOS transistor in the triode region as a "voltage
controlled resistor" to achieve the transimpedance
variation.
Another feature of the AGC is that it is only operates
on signals greater than 10.5dBm (@ 0.45A/W). This
knee in the gain response is important when setting
"signal detect" functions in the following postamplifier.
It also aids in active photodiode alignment.
A pad is provided to monitor the AGC output. This
pad can also be used to disable the AGC for align-
ment.
F
UNCTIONAL
D
ESCRIPTION
Output Stage
The signal from the TZA enters a phase splitter and a
pair of voltage follower outputs. These are designed
to drive a high impedance (>500
) load. They are
stable for driving capacitive loads, such as interstage
filters.
Since the MC2207 exhibits rapid rolloff (3 pole), sim-
ple external filtering will suffice.
Monitor O/P
High impedance O/P sinks replica of average
photodiode current for monitoring purposes.
Note that this output is provided because in this de-
vice (unlike MC2006/7/8) it is not possible to connect
the photodiode cathode to V
CC
. For the correct opera-
tion of the AGC and DC restore the photodiode cath-
ode must be connected to the PINK pin. The MC2207
measures the photodiode current and uses this infor-
mation to set the tramsimpedance and reduce the DC
offset of the outputs.
ADVANCED INFORMATION
Europe
Europe Central
Germany, Switzerland Eastern
Europe
and Turkey
Phone: (49) 89 829 1320
Fax: (49) 89 834 2734
Europe Mediterranean
Italy, Spain and Portugal
Phone: (39) 02 9317 9911
Fax: (39) 02 9317 9913
Europe North
UK, Ireland and Scandinavia
Phone: 44 (0) 118 920 9500
Fax: 44 (0) 118 920 9595
UK
Phone: 44 (0) 1925-661968
Fax: 44 (0) 1925-661800
Europe South
France, Belgium and Netherlands
Phone: +33 (0) 1 56 30 80 40
Fax: +33 (0) 1 56 30 80 20
Europe - Israel/Greece
Phone: (972) 9961-5100
Fax: (972) 9957 5166
Europe - Finland
Phone: (35) 892316 6495
Fax: (35) 892316 6220
World Wide Sales Companies
PAGE -5-
Americas
US Southwest/Pacific Southwest
Newbury Park
Phone: (805) 786-2000
Fax: (805) 480-4486
US Northwest/Pacific Northwest
Santa Clara
Phone: (408) 423-4500
Fax: (408) 249-7113
US North Central
Illinois/Colorado
Phone: (630) 799-9300
Fax: (630) 799-9325
US South Central - Texas
Phone: (972) 735-1540
Fax: (972) 407-0639
US Northeast / Canada
Phone: (613) 271-2358
Fax: (613) 271-2359
Massachusetts
Phone: (978) 244-7680
Fax: (978) 244-6868
US Southeast - North Carolina
Phone: (919) 858-9110
Fax: (919) 858-8669
US Florida / South America
Phone: (727) 799-8406
Fax: (727) 799-8306
US Mid-Atlantic - Pennsylvania
Phone: (215) 244-6784
Fax: (215) 244-9292
San diego
Phone: (858) 228 3000
Fax: (858) 228 3000
Santa Clara
Phone: (408) 423 4500
Fax: (408) 249 7133
Asia
Taiwan
Phone: (886-2) 8789-8366
Fax: (886-2) 8789-8366
China - Hong Kong
Phone: 86-755-518-2495
Fax: 86-755-518-3024
Hong Kong
Phone: 852-2-827-0181
Fax: 852-2-827-6488
China - Central and North
Phone: (86-21) 6350-5701
Fax: (86-21)-6350-5702
Korea
Phone: 82-2-565-2880
Fax: 82-2-528-4301
Mindspeed Technologies Japan
Company Limited.
Phone: (81-3) 5380 1730
Fax: (81-3) 5371 1501
Headquarters
Newport Beach
Mindspeed Technologies
4000 MacArthur Boulevard, East Tower
Newport Beach, CA 92660
Phone: (949) 579-3000
www.mindspeed.com
MC2207-AA
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