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ML2008

Micro Linear
Part Number ML2008
Manufacturer Micro Linear
Description uP Compatible Logarithmic Gain/Attenuator
Published May 7, 2005
Detailed Description March 1997 ML2008*, ML2009** µP Compatible Logarithmic Gain/Attenuator GENERAL DESCRIPTION The ML2008 and ML2009 are di...
Datasheet PDF File ML2008 PDF File

ML2008
ML2008

Overview
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 hardwiring 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.
* This Part Is End Of Life As Of August 1, 2000 ** This Part Is Obsolete FEATURES s s s s s s s s Low noise 0dBrnc max with +24dB gain Low harmonic distortion –60dB max Gain range –24 to +24dB Resolution 0.
1dB steps Flat frequency response ± 0.
05dB from 0.
3-4kHz ± 0.
10dB from 0.
1-20kHz Low supply current 4mA max from ± 5V supplies TTL/CMOS compatible digital interface ML2008 is designed to interface to an 8-bit data bus; ML2009 to 16-bit data bus BLOCK DIAGRAM ML2008 VCC VSS GND AGND VCC VSS GND ML2009* AGND +5 VIN –5 + COARSE – + FINE – RESISTORS/ SWITCHES 16 DECODERS 8 REGISTER 0 + BUFFER – VOUT +5 VIN –5 + COARSE – + FINE – RESISTORS/ SWITCHES 16 DECODERS 9 RESISTORS/ SWITCHES 16 + BUFFER – VOUT RESISTORS/ SWITCHES 16 1 PDN 1 REGISTER 1 8 WR CS A0 WR CS REGISTER 0 9 D0–D8 D1–D8 1 ML2008, ML2009 PIN CONFIGURATION ML2008 18-Pin DIP (P18) D7 D6 D5 D4 WR D3 D2 D1 GND 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 TOP VIEW D8 VCC VOUT VSS AGND VIN NC CS A0 D7 D6 D5 D4 WR D3 D2 D1 GND ML2009* 18-Pin DIP (P18) 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 TOP VIEW D8 VCC VOUT VSS ...


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