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PDF ML2008IP Data sheet ( Hoja de datos )
| Número de pieza | ML2008IP | |
| Descripción | P Compatible Logarithmic Gain/Attenuator | |
| Fabricantes | Micro Linear | |
| Logotipo |  |
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March 1997
ML2008*, ML2009**
µP Compatible Logarithmic Gain/Attenuator
GENERAL DESCRIPTION
The ML2008 and ML2009 are digitally controlled
logarithmic gain/attenuators with a range of –24 to +24dB
in 0.1dB steps.
Easy interface to microprocessors is provided by an input
latch and control signals consisting of chip select and
write.
The interface for gain setting of the ML2008 is by an 8-bit
data word, while the ML2009 is designed to interface to a
16-bit data bus with a single write operation by hard-
wiring the gain/attenuation pin or LSB pin. The ML2008
can be power downed by the microprocessor utilizing a
bit in the second write operation.
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
general purpose function generation.
FEATURES
s Low noise
0dBrnc max with +24dB gain
s Low harmonic distortion
–60dB max
s Gain range
–24 to +24dB
s Resolution
0.1dB steps
s Flat frequency response
±0.05dB from 0.3-4kHz
±0.10dB from 0.1-20kHz
s Low supply current
4mA max from ±5V supplies
s TTL/CMOS compatible digital interface
s ML2008 is designed to interface to an 8-bit data bus;
ML2009 to 16-bit data bus
* This Part Is End Of Life As Of August 1, 2000
** This Part Is Obsolete
BLOCK DIAGRAM
ML2008
ML2009*
VCC VSS GND AGND
VCC VSS GND AGND
+5
VIN
WR
CS
A0
–5
+
COARSE
–
RESISTORS/
SWITCHES
16
+
FINE
–
RESISTORS/
SWITCHES
16
+
BUFFER
–
VOUT
DECODERS
8
REGISTER 0
1
PDN
1
REGISTER 1
8
D1–D8
+5
VIN
WR
CS
–5
+
COARSE
–
+
FINE
–
RESISTORS/
SWITCHES
16
RESISTORS/
SWITCHES
16
DECODERS
9
REGISTER 0
9
D0–D8
+
BUFFER
–
VOUT
1
1 page  
TIMING DIAGRAM
D0-D8
WR
A0
CS
ML2008, ML2009
DATA
VALID
tDS tDH
tPW
tAS tAH
tCSS
tCSH
TYPICAL PERFORMANCE CURVES
0
–0.5 ATTEN: VIN = 0.5VRMS
–.10 GAIN: VIN = 0.5VRMS/GAIN SETTING
GAIN = +24dB
–.15
GAIN = +18dB
–.20
GAIN = +12dB
–.25
GAIN = +0, –24dB
–.30
–.35
–.40
–.45
–.50
100
1K 10K
FREQUENCY (Hz)
100K
Figure 2. Amplitude vs Frequency
(VIN/VOUT = 0.5VRMS)
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
10
GAIN = +24dB
GAIN = +12dB
GAIN = –24dB
100 1K
FREQUENCY (Hz)
10K
Figure 4. Output Noise Voltage vs Frequency
0
–0.5 ATTEN: VIN = 2VRMS
–.10 GAIN: VIN = 2VRMS/GAIN SETTING
GAIN = +24dB
–.15
GAIN = 0dB
–.20
GAIN = –24dB
–.25
–.30
–.35
–.40
–.45
–.50
100
1K 10K
FREQUENCY (Hz)
Figure 3. Amplitude vs Frequency
(VIN/VOUT = 2VRMS)
100K
–2
VIN = 0
–3
–4
–5
–6
–7
–8
–9
–10
–24 –18 –12 –6
0
6 12 18 24
GAIN SETTING (dB)
Figure 5. CMSG Output Noise vs Gain Setting
5
5 Page 
ML2008, ML2009
PHYSICAL DIMENSIONS inches (millimeters)
0.045 MIN
(1.14 MIN)
(4 PLACES)
0.170 MAX
(4.32 MAX)
Package: P18
18-Pin PDIP
0.890 - 0.910
(22.60 - 23.12)
18
PIN 1 ID
0.240 - 0.260 0.295 - 0.325
(6.09 - 6.61) (7.49 - 8.26)
1
0.050 - 0.065
(1.27 - 1.65)
0.100 BSC
(2.54 BSC)
0.015 MIN
(0.38 MIN)
0.125 MIN
(3.18 MIN)
0.016 - 0.022
(0.40 - 0.56)
SEATING PLANE
0º - 15º
0.008 - 0.012
(0.20 - 0.31)
ORDERING INFORMATION
PART NUMBER
ML2008IP
ML2008IQ
ML2008CP
ML2008CQ
ML2009IP
ML2009IQ
ML2009CP
ML2009CQ
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
0°C to +70°C
0°C to +70°C
–40°C to 85°C
–40°C to 85°C
0°C to +70°C
0°C to +70°C
PACKAGE
Molded PDIP (P18) (EOL)
Molded PLCC (Q20) (EOL)
Molded PDIP (P18) (EOL)
Molded PLCC (Q20) (EOL)
Molded PDIP (P18) (OBS)
Molded PLCC (Q20) (OBS)
Molded PDIP (P18) (OBS)
Molded PLCC (Q20) (OBS)
© Micro Linear 1997
is a registered trademark of Micro Linear Corporation
Products described in this document may be covered by one or more of the following patents, U.S.: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940;
5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; Japan: 2598946. Other patents are pending.
Micro Linear reserves the right to make changes to any product herein to improve reliability, function or design.
Micro Linear does not assume any liability arising out of the application or use of any product described herein,
neither does it convey any license under its patent right nor the rights of others. The circuits contained in this
data sheet are offered as possible applications only. Micro Linear makes no warranties or representations as to
whether the illustrated circuits infringe any intellectual property rights of others, and will accept no responsibility
or liability for use of any application herein. The customer is urged to consult with appropriate legal counsel
before deciding on a particular application.
2092 Concourse Drive
San Jose, CA 95131
Tel: 408/433-5200
Fax: 408/432-0295
11 DS2008_09-01
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ML2008IP.PDF ] | |
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