TZA3034T Ver la hoja de datos (PDF) - Philips Electronics
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TZA3034T Datasheet PDF : 28 Pages
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Philips Semiconductors
SDH/SONET STM1/OC3 postamplifier
Product specification
TZA3034
PINNING
SYMBOL
PIN
TZA3034T
TZA3034TT
PAD
TZA3034U
TYPE(1)
DESCRIPTION
SUB
TEST
1
1, 14
S substrate pin; must be at the same potential as pin AGND
2
2, 10, 15,
− for test purpose only; to be left open in the application
21, 26
AGND
3
3, 4, 6, 9
S analog ground; must be at the same potential as pin DGND
DIN
4
7
I differential input; complementary to pin DINQ; DC bias level is set
internally at approximately 2.1 V
DINQ
5
8
I differential input; complementary to pin DIN; DC bias level is set
internally at approximately 2.1 V
VCCA
CF
JAM
6
11, 12
S analog supply voltage; must be at the same potential as pin VCCD
7
13
A input for connection of capacitor to set time constant of level detector
input filter (optional); the capacitor should be connected between
VCCA and pin CF
8
16
I PECL-compatible input; controls the output buffers,
pins DOUT and DOUTQ; when a LOW signal is applied, the output
buffers will follow the input signal; when a HIGH signal is applied, the
output buffers will latch into LOW and HIGH states respectively;
when not connected, pin JAM is actively pulled LOW
STQ
9
17
O PECL-compatible status output of the input signal level detector;
when the input signal is below the user-programmed threshold level,
this output is HIGH; complementary to pin ST
ST
10
18
O PECL-compatible status output of the input signal level detector;
when the input signal is below the user-programmed threshold level,
this output is LOW; complementary to pin STQ
DGND
11
19, 20, 22, S digital ground; must be at the same potential as pin AGND
25
DOUTQ
12
23
O PECL-compatible differential output; this pin will be forced into a
HIGH condition when pin JAM is HIGH; complementary to pin DOUT
DOUT
13
24
O PECL-compatible differential output; this pin will be forced into a
LOW condition when pin JAM is HIGH; complementary to
pin DOUTQ
VCCD
Vref
14
27, 28
S digital supply voltage; must be at the same potential as VCCA
15
29
O band gap reference voltage; typical value is 1.2 V; internal series
resistor of 1 kΩ
RSET
16
30
A input signal level detector threshold setting; nominal DC voltage is
VCCA − 1.5 V; threshold level is set by connecting an external resistor
between VCCA and pin RSET or by forcing a current into pin RSET;
default value for this resistor is 180 kΩ which corresponds with
approximately 4 mV (p-p) differential input signal
n.c.
−
5, 31, 32
− not connected
Note
1. Pin type abbreviations: O = Output, I = Input, S = power Supply and A = Analog function.
1999 Nov 03
4
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