LSP2961 Datasheet, PDF (2/6 Pages) Agere Systems – Precision Log Ratio Amplifier

LSP2961
Precision Log Ratio Amplifier
Description (continued)
Block Diagram
Advance Data Sheet
September 2001
IREF_ADJ (3)
REFERENCE
CURRENT
VCC (5)
IN (1)
VOS_ADJ (8)
VIN–
VIN+
10.2 kΩ
VIN+
VIN–
160 kΩ
OUTPUT (6)
GND (2)
SCALE FACTOR (7)
VEE (4)
Figure 1. LSP2961 Internal Block Diagram
Typical Application Circuit
IREF_ADJ (3)
REFERENCE
CURRENT
VCC
0.1 µF
2352.a(F)
PIN
VOS_ADJ (8)
VIN–
VIN+
10.2 kΩ
VIN+
VIN–
160 kΩ
OUTPUT (6)
GND (2)
1 kΩ (0.42%)
THERMISTOR
SCALE FACTOR (7)
VEE ^{0.1 µF}
16 kΩ
RESISTOR
Figure 2. Typical Application Circuit with External Temperature Compensation
2353.b(F)
2
Agere Systems Inc.