ML2111 Datasheet, PDF (1/26 Pages) Micro Linear Corporation – Universal Dual High Frequency Filter

May 1997
ML2111*
Universal Dual High Frequency Filter
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.
FEATURES
s Specified for operation up to 150kHz
s Center frequency x Q product £ 5MHz
s Separate highpass, notch, allpass, bandpass, and
lowpass outputs
s Center frequency accuracy of ±0.4% or ±0.8% max.
s Q accuracy of ±4% or ±8% max.
s Clock inputs are TTL or CMOS compatible
s Single 5V (±2.25V) or ±5V supply operation
* Some Packages Are End Of Life and Obsolete
BLOCK DIAGRAM
INVA
4
7
8
3
VA+
VD+
N/AP/HPA
5
- ^S1A
-
+
+_Σ
∫
AGND
15
- _S2A
CLKA
10
50/100HOLD
12
LEVEL NON-OVERLAP
SHIFT
CLOCK
CONTROL
LEVEL SHIFT
9
CLKB
11
LEVEL NON-OVERLAP
SHIFT
CLOCK
INVB
17
- ^S2B
-
+
+_Σ
∫
VA-
14
VD-
N/AP/HPB
13
18
- _S1B
16
2
BPA
∫
∫
BPB
19
1
LPA
SA/B
6
LPB
20
1