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ML2004 데이터시트(PDF) 1 Page - Fairchild Semiconductor

부품명 ML2004
상세설명  Logarithmic Gain/Attenuator
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제조업체  FAIRCHILD [Fairchild Semiconductor]
홈페이지  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

ML2004 데이터시트(HTML) 1 Page - Fairchild Semiconductor

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REV. 1.1.1 3/19/01
Features
• Low noise: 0 dBrnc max with +24dB gain
• Low harmonic distortion: -60dB max
• Gain range: –24 to +24dB
• Resolution: 0.1dB steps
• Flat frequency response:
±0.05dB from .3–4 kHz
±0.10dB from .1-20 kHz
• Low supply current 4mA max from ±5V supplies
• TTL/CMOS compatible digital interface
• ML2003 has pin selectable serial or parallel interface;
ML2004 serial interface only
General Description
The ML2003 and ML2004 are digitally controlled logarith-
mic gain/attenuators with a range of –24 to +24 dB in 0.1 dB
steps.
The gain settings are selected by a 9-bit digital word.
The ML2003 digital interface is either parallel or serial.
The ML2004 is packaged in a 14-pin DIP with a serial
interface only.
Absolute gain accuracy is 0.05dB max over supply tolerance
of ±10% and temperature range.
These CMOS logarithmic gain/attenuators are designed for a
wide variety of applications in telecom, audio, sonar, or gen-
eral purpose function generation. One specific intended
application is analog telephone lines.
Block Diagram
Pin Connections
VOUT
VIN
VCC
PDN
A GND
VSS
GND
+
16
16
C0
C1
F0
F2
9
C2
C3
F1
F3
F2
(SCK)
C2
(LATI)
ATTEN/
GAIN
C1
(SID)
C0
(LATO)
F0
(SOD)
C3
(LATI)C2
(SID)C1
C0 (LATO)
NC
PDN
F3
F2 (SCK)
VOUT
VSS
A GND
NC
NC
(LATO)C0
PDN
F3
(SCK)F2
F1
GND
1
4
5
6
7
8
18
17
16
15
14
120 19
2
3
11 12 13
10
9
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
ATTEN/GAIN
ML2003
18-PIN DIP
20-Pin PCC
ML2003
TOP VIEW
TOP VIEW
VCC
VOUT
VSS
A GND
VIN
NC
F0 (SOD)
SER/PAR
COURSE
DECODER/MODE SELECTOR
9-BIT LATCH &
SHIFT REGISTER
RESISTORS/
SWITCHES
NOTE: SERIAL MODE FUNCTIONS INDICATED BY PARENTHESES.
RESISTORS/
SWITCHES
+
FINE
+
BUFFER
SER/PAR
LATI
SID
LATO
PDN
NC
SCK
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
ML2004
14-PIN DIP
TOP VIEW
VCC
VOUT
VSS
A GND
VIN
NC
SOD
ML2003, ML2004
Logarithmic Gain/Attenuator


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