MAX4207ETE+ Maxim Integrated Products, MAX4207ETE+ Datasheet - Page 13

• Manufacturer Part Number: MAX4207ETE+
• Description: IC AMP TRANS LOG 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX4207ETE+

• Amplifier Type: Logarithmic
• Number Of Circuits: 1
• Slew Rate: 12 V/µs
• Gain Bandwidth Product: 5MHz
• -3db Bandwidth: 1MHz
• Current - Input Bias: 10pA
• Voltage - Input Offset: 600µV
• Current - Supply: 5mA
• Current - Output / Channel: 58mA
• Voltage - Supply, Single/dual (±): 2.7 V ~ 11 V, ±2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Number Of Channels: 1
• Input Offset Voltage: 2 mV
• Supply Current: 6 mA
• Operating Temperature Range: + 85 C
• Mounting Style: SMD/SMT
• Power Dissipation: 1349 mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Lead Free Status / Rohs Status: Details

Figure 6. Logarithmic Current-Sensing Amplifier with Sourcing Input
Figure 7. Measuring Optical Absorbance
Amplifier with Over 5 Decades of Dynamic Range
V
CC
2.7V TO 76V
FIBER CABLE
330Ω
330Ω
32pF
32pF
______________________________________________________________________________________
2.2µF
2.2µH
REFISET
REFIIN
LOGIIN
Precision Transimpedance Logarithmic
MAX4207
GND
V
V
CC
CC
HIGH-SPEED DATA PATH
PHOTODIODE BIAS
0.22µF
APD
V
V
I
APD
EE
EE
REFVOUT
CMVOUT
REFIOUT
CMVIN
LOGV2
SCALE
LOGV1
OSADJ
REF
BIAS
MAX4007
GND
TIA
CLAMP
OUT
TO LIMITING
AMPLIFIER
I
APD
/10
0.1µF
0.1µF
The MAX4207 drives capacitive loads of up to 50pF.
Reactive loads decrease phase margin and can pro-
duce excessive ringing and oscillation. Use an isolation
resistor in series with LOGV1 or LOGV2 to reduce the
effect of large capacitive loads. Recall that the combi-
nation of the capacitive load and the small isolation
resistor limits AC performance.
The LOGV1 and LOGV2 amplifiers are capable of
sourcing or sinking in excess of 30mA. Ensure that the
continuous power dissipation rating for the MAX4207 is
not exceeded.
The 16-lead thin QFN package has an exposed paddle
that provides a heat-removal path, as well as excellent
electrical grounding to the PC board. The MAX4207’s
exposed pad is internally connected to V
either be connected to the PC board V
unconnected. Ensure that only V
under the exposed paddle.
330Ω
330Ω
V
32pF
32pF
CC
REFVOUT
REFIOUT
REFIIN
LOGIIN
GND
MAX4207
V
CC
0.1µF
V
V
CMVOUT
EE
EE
REFISET
CMVIN
LOGV2
SCALE
LOGV1
OSADJ
Power Dissipation
Capacitive Loads
EE
TQFN Package
traces are routed
OUTPUT
EE
5MΩ
EE
plane or left
, and can
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