AD8305ACPZ-RL7 Analog Devices Inc, AD8305ACPZ-RL7 Datasheet - Page 5

• Manufacturer Part Number: AD8305ACPZ-RL7
• Description: IC, LOGARITHMIC AMP, 20mV, LFCSP-16
• Manufacturer: Analog Devices Inc
• Type: Logarithmic Converterr

Specifications of AD8305ACPZ-RL7

• No. Of Amplifiers: 1
• Dynamic Range, Decades: 5
• Scale Factor V / Decade: 0.2
• Supply Voltage Range: 3V To 12V
• Amplifier Case Style: LFCSP
• Supply Current: 5.4mA
• Input Offset Voltage: 20mV
• Design Resources: Interfacing ADL5315 to Translinear Logarithmic Amplifier (CN0056) Interfacing ADL5317 High Side Current Mirror to a Translinear Logarithmic Amplifier in an Avalanche Photodiode Power Detector
• Applications: Fiber Optics
• Mounting Type: Surface Mount
• Package / Case: 16-LFCSP
• Rohs Compliant: Yes
• Number Of Channels: 1
• Number Of Elements: 3
• Power Supply Requirement: Single/Dual
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): ±3/±5V
• Power Dissipation: 500mW
• Rail/rail I/o Type: Rail to Rail Output
• Single Supply Voltage (min): 3V
• Single Supply Voltage (max): 12V
• Dual Supply Voltage (min): ±1.5V
• Dual Supply Voltage (max): ±6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 16
• Package Type: LFCSP EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: AD8305ACPZ-RL7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 3. Pin Function Descriptions
Pin No.
1
2
3
4
5
6, 7
8
9
10
11
12
13 to 16
Mnemonic
VRDZ
VREF
IREF
INPT
VSUM
VNEG
VPOS
VLOG
BFIN
SCAL
VOUT
COMM
EPAD
Function
Top of a Resistive Divider Network that Offsets V
may also be connected to ground when bipolar outputs are to be provided.
Reference Output Voltage of 2.5 V.
Accepts (Sinks) Reference Current, I
Accepts (Sinks) Photodiode Current, I
flows into INPT.
Guard Pin. Used to shield the INPT current line and for optional adjustment of the INPT and I
potential.
Optional Negative Supply, V
Positive Supply, (V
Output of the Logarithmic Front End.
Buffer Amplifier Noninverting Input.
Buffer Amplifier Inverting Input.
Buffer Output.
Analog Ground.
The exposed pad must be soldered to ground.
P
− V
NOTES
1. CONNECT EPAD TO GROUND.
N
VRDZ 1
VREF 2
IREF 3
INPT 4
) ≤ 12 V.
Figure 2. Pin Configuration
N
(this pin is usually grounded; for details of usage, see the Applications section.
Rev. B | Page 5 of 24
(Not to Scale)
AD8305
TOP VIEW
PIN 1
INDICATOR
REF
PD
.
. Usually connected to photodiode anode such that photo current
12 VOUT
11 SCAL
10 BFIN
9 VLOG
LOG
to Position the Intercept. Normally connected to VREF;
REF
node
AD8305