ml2003 Fairchild Semiconductor, ml2003 Datasheet - Page 10

• Manufacturer Part Number: ml2003
• Description: Logarithmic Gain/attenuator
• Manufacturer: Fairchild Semiconductor

ML2003, ML2004
10
CLOCK
V
IN
8-BIT COUNTER
ATTEN/GAIN
UP/DOWN
ML2003
C3-C0
F3-F1
Figure 16. Analog AGC
Figure 18. Precision Peak Detector (±1%) with Controllable Acquire and Hold Time
V
OUT
U/D
V
f CLK1 DETERMINES PEAK ACQUIRE TIME
f CLK2 DETERMINES PEAK HOLD TIME
REF
CLK1
COMPARATOR
R1, R2, R3 SETS AGC THRESHOLD
R
1
+5
V
IN
AND HYSTERESIS
+
8-BIT COUNTER
–
ATTEN/GAIN
UP/DOWN
CLK2
ML2003
C3-C0
F3-F1
V
OUT
+5
U/D
R
R
2
3
COMPARATOR
Figure 17. Digitally Controlled Volume Control
–
+
CLOCK
SWITCHES
DOWN UP
V
FROM
µP OR
V
V
IN
PEAK
PEAK
UP/DOWN
8-BIT CTR
ATTEN/GAIN
ML2003
C3-C0
F3-F1
V
V
OUT
IN
V
OUT
U/D
PRODUCT SPECIFICATION
REV. 1.1.1 3/19/01