|
|
Part: MAX262B
Category:
Analog & Mixed-Signal Processing
-> Filters
-> Analog Filters
Description: MAX260, MAX261, MAX262 Microprocessor Programmable Universal Active Filters
Company: Maxim Integrated Products
Datasheet: Download MAX262B datasheet File size : 270 kB
Request For quote: Find where to buy MAX262B
Datasheet text preview:
19-0352; Rev 2; 7/02
Microprocessor Programmable Universal Active Filters
General Description
T h e MAX260/MAX261/MAX262 CMOS dual secondorder universal switched-capacitor active filters allow microprocessor control of precise filter functions. No external components are required for a variety of bandpass, lowpass, highpass, notch, and allpass configurat i o n s . Each device contains two second-order filter sections that place center frequency, Q, and filter operating mode under programmed control. An input clock, along with a 6-bit f0 program input, determine the filter's center or corner frequency without affecting other filter parameters. The filter Q is also prog r a m m e d independently. Separate clock inputs for each filter section operate with either a crystal, RC network, or external clock generator. The MAX260 has offset and DC specifications superior to the MAX261 and MAX262 and a center frequency (f0) range of 7.5kHz. The MAX261 handles center frequencies to 57kHz, while the MAX262 extends the cent e r frequency range to 140kHz by employing lower clock-to-f0 ratios. All devices are available in 24-pin DIP and small outline packages in commercial, extended, and military temperature ranges. o Filter Design Software Available o Microprocessor Interface o 64-Step Center Frequency Control o 128-Step Q Control o Independent Q and f0 Programming o Guaranteed Clock to f0 Ratio-1% (A grade) o 75kHz f0 Range (MAX262) o Single +5V and ±5V Operation
Features
MAX260/MAX261/MAX262
Ordering Information
PART MAX260ACNG MAX260BCNG MAX260AENG MAX260BENG MAX260ACWG MAX260BCWG MAX260AMRG MAX260BMRG TEMP RANGE 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 -55°C to +125°C -55°C to +125°C PACKAGE Plastic DIP Plastic DIP Plastic DIP Plastic DIP Wide SO Wide SO CERDIP CERDIP ACCURACY 1% 2% 1% 2% 1% 2% 1% 2%
Applications
µP-Tuned Filters Anti-Aliasing Filters Digital Signal Processing Adaptive Filters Signal Analysis Phase-Locked Loops
*All devices--24-pin packages 0.3in-wide packages Ordering Information continued at end of data sheet.
Pin Configurations Functional Diagram
TOP VIEW
BPA 1 N.C. 2 24 LPA 23 INB 22 LPB 21 BPB BPA 1 OP OUT 2 HPA 3 OP IN 4 INA 5 D1 6 A3 7 CLK OUT 8 V+ 9 A2 10 CLKA 11 CLKB 12 24 LPA 23 INB 22 LPB 21 BPB
INPUT IN +5V V+ LP HP FILTER A BP IN LP HP BP FILTER B
OUTPUT
HPA 3 N.C. 4 INA 5 D1 6
MAX260
20 D0 19 OSC OUT 18 GND 17 V16 WR 15 A0 14 HPB 13 A1
MAX261 MAX262
20 HPB 19 D0 18 OSC OUT 17 GND 16 V15 WR 14 A0 13 A1
GND
A3 7 CLK OUT 8 V+ 9
-5V
VCLKA
MAX260 MAX261 MAX262 OSC CLKOUT CLKB
PROGRAM INPUTS CRYSTAL FOURTH-ORDER BANDPASS FILTER
A2 10 CLKA 11 CLKB 12
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
Microprocessor Programmable Universal Active Filters MAX260/MAX261/MAX262
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V+ to V-) ............15V Input Voltage, any pin ..(V- - 0.3V) to (V+ + 0.3V) Input Current, any pin ......±50mA Power Dissipation Plastic DIP (derate 8.33mW/°C above 70°C) ......660mW CERDIP (derate 12.5mW/°C above 70°C) ........1000mW Wide SO (derate 11.8mW/°C above 70°C) .........944mW Operating Temperature Ranges MAX260/MAX261/MAX262XCXG .....0°C to +70°C MAX260/MAX261/MAX262XEXG ............-40°C to +85°C MAX260/MAX261/MAX262XMXG .........-55°C to +125°C Storage Temperature Range .....-65°C to +160°C Lead Temperature (Soldering, 10s) ........+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = +5V, V- = -5V, CLKA = CLKB = ±5V 350kHz for the MAX260 and 1.5MHz for the MAX261/MAX262, fCLK/f0 = 199.49 for MAX260/MAX261 and 139.80 for MAX262, Filter Mode 1, TA = +25°C, unless otherwise noted.)
PARAMETER f0 Center Frequency Range Maximum Clock Frequency MAX260A fCLK/f0 Ratio Error (Note 1) TA = TMIN to TMAX MAX260B MAX261/MAX262A MAX261/MAX262B f0 Temperature Coefficient Q=8 Q=8 Q = 32 Q = 32 Q = 64 Q Accuracy (deviation from ideal continuous filter) (Note 2) TA = TMIN to TMAX Q = 64 Q=8 Q=8 Q = 32 Q = 32 Q = 64 Q = 64 Q Temperature Coefficient DC Lowpass Gain Accuracy Lowpass (at D.C.) Bandpass (at f0) MAX260 MAX261/MAX262 MAX260 Gain Temperature Coefficient MAX261/MAX262 MAX260/MAX261/MAX262 MAX260A MAX260B MAX260A MAX260B MAX260A MAX260B MAX261/MAX262A MAX261/MAX262B MAX261/MAX262A MAX261/MAX262B MAX261/MAX262A MAX261/MAX262B CONDITIONS MIN TYP See Table 1 See Table 1 ±0.2 ±0.2 ±0.2 ±0.2 -5 ±1 ±1 ±2 ±2 ±4 ±4 ±1 ±1 ±2 ±2 ±4 ±4 ±20 ±0.1 ±0.1 -5 -5 +20 ppm/°C ±0.3 ±0.5 dB ±6 ±10 ±10 ±15 ±20 ±25 ±6 ±10 ±10 ±15 ±20 ±25 ppm/°C % ±1.0 ±2.0 ±1.0 ±2.0 ppm/°C % MAX UNITS
2
_______________________________________________________________________________________
Microprocessor Programmable Universal Active Filters
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +5V, V- = -5V, CLKA = CLKB = ±5V 350kHz for the MAX260 and 1.5MHz for the MAX261/MAX262, fCLK/f0 = 199.49 for MAX260/MAX261 and 139.80 for MAX262, Filter Mode 1, TA = +25°C, unless otherwise noted.)
PARAMETER CONDITIONS MAX260A MAX260B TA = TMIN to TMAX, Q = 4 Mode 1 MAX261A MAX261B MAX262A Offset Voltage At Filter Outputs--LP, BP, HP (Note 3) MAX262B MAX260A MAX260B Mode 3 MAX261A MAX261B MAX262A MAX262B Offset Voltage Temperature Coefficient Clock Feedthrough Crosstalk Q = 1, 2nd-Order, LP/BP Wideband Noise Harmonic Distortion at f0 Supply Voltage Range Power Supply Current (Note 5) 4th-Order LP (Figure 26) 4th-Order BP (Figure 24) (Note 4) Q = 4, VIN = 1.5VP-P TA = TMIN to TMAX MAX260 TA = TMIN to TMAX CMOS Level Logic Inputs MAX261 MAX262 Shutdown Supply Current INTERNAL AMPLIFIERS Output Signal Swing Output Signal Circuit Current Power Supply Rejection Ratio Gain Bandwidth Product Slew Rate TA = TMIN to TMAX, 10k load (Note 6) Source Sink 0Hz to 10kHz ±4.75 50 2 -70 2.5 6 V mA dB MHz V/µs Q0A - Q6A = all 0, CMOS Level Logic Inputs (Note 5) ±2.37 fCLK/f0 = 100.53, Q = 4 TA = TMIN to TMAX MIN TYP ±0.05 ±0.15 ±0.40 ±0.80 ±0.40 ±0.80 ±0.075 ±0.075 ±0.50 ±0.90 ±0.50 ±0.90 ±0.75 ±4 -70 See Typ. Oper. Char. 90 100 -67 ±5 15 16 16 1.5 ±6.3 20 20 20 mA mA dB V µVRMS MAX ±0.25 ±0.45 ±1.00 ±1.60 ±1.20 ±1.60 ±0.30 ±0.50 ±1.10 ±1.60 ±1.30 ±1.60 mV/°C mV dB V UNITS
MAX260/MAX261/MAX262
_______________________________________________________________________________________
3
Others parts begin by ma
|
|
|
