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SLOS417B – OCTOBER 2003 – REVISED JULY 2006
Terminal Functions
TERMINAL
NAME
IN–
IN+
V
DD
V
O+
GND
V
O-
SHUTDOWN
PVDD
YEF, YZF
C1
A1
B1
C3
A2, B3
A3
C2
B2
I/O
I
I
I
O
I
O
I
I
Negative differential input
Positive differential input
Power supply
Positive BTL output
High-current ground
Negative BTL output
Shutdown terminal (active low logic)
Power supply
DESCRIPTION
FUNCTIONAL BLOCK DIAGRAM
*Gain =
150 kΩ
R
I
*Gain = 2 V/V
V
DD
B1, B2
V
DD
+
_
_
+
_
+
+
_
C3
V
O+
Deglitch
Logic
Gate
Drive
A3
V
O-
IN- C1
150 kΩ
_
+
IN+ A1
150 kΩ
+
_
Deglitch
Logic
Gate
Drive
C2
SHUTDOWN
TTL
SD Input
Buffer
300 kΩ
Biases
and
References
Ramp
Generator
Startup
Protection
Logic
OC
Detect
A2, B3
GND
Notes:
* Total gain =
2x
150 kΩ
R
I
4