ML2111CCP Micro Linear, ML2111CCP Datasheet

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ML2111CCP

Manufacturer Part Number
ML2111CCP
Description
Universal dual high frequency filter
Manufacturer
Micro Linear
Datasheet
GENERAL DESCRIPTION
The ML2111 consists of two independent switched
capacitor filters that operate at up to 150kHz and perform
second order filter functions such as lowpass, bandpass,
highpass, notch and allpass. All filter configurations,
including Butterworth, Bessel, Cauer, and Chebyshev can
be formed.
The center frequency of these filters is tuned by an
external clock or the external clock and resistor ratio.
The ML2111 frequency range is specified up to 150kHz
with ±5.0V ±10% power supplies. Using a single 5.0V
±10% power supply the frequency range is up to 100kHz.
These filters are ideal where center frequency accuracy
and high Qs are needed.
The ML2111 is a pin compatible superior replacement for
MF10, LMF100, and LTC1060 filters.
BLOCK DIAGRAM
15
10
12
11
17
4
9
INV A
AGND
CLK A
50/100HOLD
LEVEL SHIFT
CLK B
INV B
V A+
V A-
14
7
LEVEL
SHIFT
LEVEL
SHIFT
V D+
V D-
Universal Dual High Frequency Filter
NON-OVERLAP
NON-OVERLAP
8
13
CLOCK
CLOCK
N/AP/HP A
CONTROL
+
+
-
-
N/AP/HP B
3
18
+
+
-
-
-
-
16
5
S1 A
S1 B
S2 A
S2 B
FEATURES
* Some Packages Are End Of Life and Obsolete
Specified for operation up to 150kHz
Center frequency x Q product
Separate highpass, notch, allpass, bandpass, and
lowpass outputs
Center frequency accuracy of ±0.4% or ±0.8% max.
Q accuracy of ±4% or ±8% max.
Clock inputs are TTL or CMOS compatible
Single 5V (±2.25V) or ±5V supply operation
19
2
BP A
BP B
20
1
LP B
LP A
5MHz
S A/B
ML2111*
6
May 1997
1

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ML2111CCP Summary of contents

Page 1

GENERAL DESCRIPTION The ML2111 consists of two independent switched capacitor filters that operate 150kHz and perform second order filter functions such as lowpass, bandpass, highpass, notch and allpass. All filter configurations, including Butterworth, Bessel, Cauer, and Chebyshev ...

Page 2

ML2111 PIN CONFIGURATION PIN DESCRIPTION PIN NAME FUNCTION 1 LP Lowpass output for biquad Bandpass output for biquad N/AP/HP Notch/allpass/highpass output for A biquad A. 4 INV Inverting input of the summing op ...

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ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. Supply Voltage | ...

Page 4

ML2111 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER FILTER (Continued) Gain Accuracy, DC Lowpass Gain Accuracy, Bandpass at f Gain Accuracy, DC Notch Output Noise (Note 3) Figure 15 (Mode 1 Noise (Note ...

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ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER FILTER 2.25V -2.25V Noise (Note 3) Figure 15 (Mode 1 ...

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ML2111 TYPICAL PERFORMANCE CURVES 0.4 0 –0.4 –0.8 –1.2 –1.6 Mode 25ºC –2 0.707V IN RMS –2.4 –2 CLK (MHz) 0 0.0 –0.4 ...

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TYPICAL PERFORMANCE CURVES 5 4 Mode 25º 0.5V IN RMS –1 – CLK (MHz) 0.08 Mode 1 0. ...

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ML2111 TYPICAL PERFORMANCE CURVES 20 16 Mode 25º 0.707V IN RMS –4 – CLK (MHz) 20 Mode 1 T ...

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TYPICAL PERFORMANCE CURVES 16 12 Mode 25º 0.5V IN RMS 4 0 –4 – – CLK (MHz) 0.4 0.2 0.0 –0.2 –0.4 –0.6 –0.8 ...

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ML2111 TYPICAL PERFORMANCE CURVES 4 Mode 25º 5MHz CLK RMS 0 100:1 50:1 –4 –8 0.1 1 Ideal Q (R3/R2) Figure 4A Deviation vs CLK 0 ...

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TYPICAL PERFORMANCE CURVES 250 200 BANDPASS OUTPUT 150 100 100 200 300 Frequency (kHz) Figure 7A. Noise Spectrum Density ( 0.8 0.4 100:1 0.0 50:1 –0.4 –0.8 Mode ...

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ML2111 FUNCTIONAL DESCRIPTION POWER SUPPLIES The analog (V ) and digital (V ) supply pins, in most A+ D+ cases, are tied together and bypassed to AGND with 100nF and 10nF disk ceramic capacitors. The supply pins can be bypassed ...

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FILTER FUNCTION DEFINITIONS 2. Lowpass function: available at the LP output pins, Figure 13 ™ OLP ™ where ...

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ML2111 FILTER FUNCTION DEFINITIONS 4. Notch function: available at N/AP/HP for several modes of operation ™ ™ ...

Page 15

MODE MODE ...

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ML2111 (18 (17 A Figure 17. Mode 1b: 2nd Order Filter Providing Notch, Bandpass, Lowpass (18 ...

Page 17

(18 (17 A Figure 20. Mode 2: 2nd Order Filter Providing Notch, Bandpass, Lowpass (18 ...

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ML2111 OPERATION MODES (Continued) The clock to center frequency ratio range is: 500 f 100 50 ˜ CLK ˜ or (mode 1c 100 50 100 50 CLK ˜ ˜ (mode 1b) 1 ...

Page 19

OPERATION MODES (Continued) above the center frequency through the resistor ratio Because of this, modes 3 and 3a are the most versatile l and useful modes for cascading second order sections to obtain high order elliptic filters. ...

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ML2111 (16) 3 (18 (17 A CLK CLK = ™ 100 50 ...

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R31 R21 INV INV p ...

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ML2111 R21 INV INV R11 AGND IN ...

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OPERATION MODES (Continued) Mode good choice when Butterworth filters are desired since they have poles in a circle with the same f Figure 31 shows an example of a 4th order, 100kHz lowpass Butterworth filter clocked at ...

Page 24

ML2111 MODE V OSN N/AP/ [(1/ ||H ||] – V OS1 OLP (1/Q)] – OS1 OS3 1b V [(1/Q R2/R1] – V OS1 1c ...

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PHYSICAL DIMENSIONS 20 PIN 0.060 MIN (1.52 MIN) (4 PLACES) 0.170 MAX (4.32 MAX) 0.125 MIN (3.18 MIN) 0.498 - 0.512 (12.65 - 13.00) 20 PIN 0.024 - 0.034 0.050 BSC (0.61 - 0.86) ...

Page 26

... ML2111 ORDERING INFORMATION PART NUMBER ML2111CCP (EOL) ML2111CCS ML2111CIP (OBS) © Micro Linear 1999. trademarks are the property of their respective owners. Products described herein may be covered by one or more of the following U.S. patents: 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; ...

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