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LOG200 数据表(PDF) 3 Page - Texas Instruments

部件名 LOG200
功能描述  LOG200 Precision, High-Speed Logarithmic Amplifier With Integrated Photodiode Bias
PDF  42 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

LOG200 数据表(HTML) 3 Page - Texas Instruments

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4 Pin Configuration and Functions
1
I1
12
OUTB
2
VCM
11
OUTA
3
I2
10
REFA
4
IREF
9
REF165
Not to scale
Thermal Pad
Figure 4-1. RGT Package, 16-Pin VQFN (Top View)
1
2
3
4
A
B
C
D
Not to scale
VS+
OUTA
OUTB
–IN
VS–
REF165
REFA
+IN
REFGND
REF25
VCM2
IBIAS
IREF
I2
VCM
I1
Figure 4-2. YBH Package, 16-Pin DSBGA (Top
View)
Table 4-1. Pin Functions
PIN
TYPE
DESCRIPTION
NAME
NO.
RGT (VQFN)
YBH (DSBGA)
+IN
14
B4
Input
Auxiliary op-amp voltage non-inverting input
–IN
13
A4
Input
Auxiliary op-amp voltage inverting input
I1
1
D4
Input
Current input for logarithm numerator
I2
3
D2
Input
Current input for logarithm denominator
IBIAS
15
C4
Output
Photodiode adaptive biasing current output
IREF
4
D1
Output
Reference current output
REFA
10
B3
Input
Logarithmic difference amplifier reference input
OUTA
11
A2
Output
Logarithmic difference amplifier output
OUTB
12
A3
Output
Auxiliary op-amp voltage output
REF165
9
B2
Output
1.65V voltage reference output
REF25
5
C2
Output
2.5V voltage reference output
REFGND
6
C1
Power
Voltage reference negative potential
VCM
2
D3
Input
Input common-mode voltage
VCM2
16
C3
Input
Input common-mode voltage. Connect to VCM.
VS+
8
A1
Power
Positive supply voltage
VS–
7
B1
Power
Negative supply voltage
Thermal Pad
PAD
N/A
—
Thermal Pad. Connect to VCM to minimize leakage on I1 pin.
www.ti.com
LOG200
SBOSA28A – AUGUST 2023 – REVISED DECEMBER 2024
Copyright © 2024 Texas Instruments Incorporated
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3
Product Folder Links: LOG200



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