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Philips Semiconductors
SA5211
Transimpedance amplifier (180 MHz)
Product specification Rev. 03 — 07 October 1998 17 of 28
9397 750 07427
© Philips Electronics N.V. 2001. All rights reserved.
This represents the maximum limit attainable with the SA5211 operating at 200 MHz
bandwidth, with a half mark/half space digital transmission at 850nm wavelength.
Fig 11. SA5211 – Block diagram.
INPUT
OUTPUT +
OUTPUT –
A1 A2
A3
A4
R
F
SD00327
Fig 12. Transimpedance amplifier.
INPUT
OUT–
OUT+
PHOTODIODE
VB2
+
+
R
1
R
3
R
12
R
13
R
5
R
4
R
7
R
14
R
15
Q
1
Q
3
Q
2
Q
4
Q
15
Q
16
Q
11
Q
12
GND
2
GND
1
V
CC2
V
CC1
R
2
SD00328
Fig 13. Shunt-series input stage.
V
CC
V
EQ3
V
IN
I
IN
INPUT
I
F
I
B
Q1
Q2
Q3
R2
R3
R4
R
F
R1
I
C1
SD00329