Low - pass filter with frequency adjustment system SPECIFICATION
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1 Low - pass filter with frequency adjustment system SPECFCATON 1 FEATURES SMC CMOS 0.18µm Wide cut-off frequency adjustment range (1MHz 200MHz) Low group delay time ripple vs. frequency (3.5ns) Low pass filter cut-off frequency adjustment system (LPF CFAS) There are 4 operation modes No external components required Supported foundries: TSMC, UMC, Global Foundries, SMC, ihp, AMS, Vanguard, SilTerra 2 APPLCATON ntermediate frequency signal processing Navigation systems including multisystems 3 OVERVEW The cell is based on 3 rd order Butterworth low-pass filter (LPF) with cut-of frequency adjustment in a wide range. There are 2 modes for cut-off frequency programming: manual and automatically. The generator is used to control filter cut-off frequency in an automatic mode. Oscillator oscillation frequency correlates with cut-off frequency which can be fixed by digital code LPF_ctrl<6:0>. There are 4 operation modes with different rated signal level under the same value of distortion. Greater level of signal corresponds to a higher current consumption. t is possible to use several LPF with one generator for multichannel systems. The block is fabricated on SMC CMOS 0.18µm technology. Ver. 1.1 August
2 180SMC_LPF_02 4 STRUCTURE Figure 1: structure. Ver. 1.1 page 2 of 6
3 180SMC_LPF_02 5 PN DESCRPTON Name Direction Description LPFn_p LPFn_n Analog differential input LPF_ctr<6:0> O Digital code controlling a central frequency LPFdef<6:0> Digital input of LPF cut-off frequency adjustment system LPF_div<7:0> Digital code forming coefficient for frequency adjustment system LPF_num<8:0> Pulse number for internal LPF adjustment clkref Reference frequency (3.105 MHz) ref_cc_lpf<1:0> Reference voltage control slowbalancing Oscillator setting time control ref_gpslpf_20ua_rpposab Reference current (20 µа) ref_lpfosc_10ua_rpposab Reference current (10 µа) ref_lpfosc_20ua_rpposab Oscillator reference current (20 µа) Manadj Manual mode enable for cut-off frequency adjustment enable PonRn Reset of defaults EN_Osc Oscillator enable/disable EN_LPF LPF enable/disable LPF_Start Filter automatic frequency adjustment system enable LPFOut_p О LPFOut_n О Analog differential output OutOsc_LPF О Oscillator digital output LPF_Rn O Automatic adjustment system status Vccd О Digital supply voltage Vcc О Supply voltage GND О Ground Ver. 1.1 page 3 of 6
4 180SMC_LPF_02 6 LAYOUT DESCRPTON The block dimensions are given in the table 1. Table 1: Block dimensions. Dimension Value Unit Height µm Width µm 1. LPF 2. Oscillator 3. Controller Figure 2: Device layout view. Ver. 1.1 page 4 of 6
5 180SMC_LPF_02 7 OPERATNG CHARACTERSTCS 7.1 TECHNCAL CHARACTERSTCS Technology SMC CMOS 0.18µm Status silicon proven Area 0.17mm ELECTRCAL CHARACTERSTCS The values of electrical characteristics are specified for V cc = V, V dd = V and T = C. Typical values are at V cc = 1.8 V, V dd = 3.15 V and T = +27 C, unless otherwise specified. Parameter Symbol Condition Value min typ max Unit Supply voltage V cc V Digital supply voltage V dd V Operating temperature range T ºС Filter order k nsertion loss G db nput signal bandwidth F MHz At 25MHz Attenuation factor α At 50MHz db At 100MHz Group delay time ripple t del ns Noise figure NF db nput 1dB compression point nput impedance Output impedance P 1dB dbm R in R out At differential input At differential output kω kω Oscillator start time t start ms Peak-to-peak oscillator analog signal A mv Oscillation frequency range F MHz LPF offset error δ % Current consumption cc ma Current consumption in a standby mode stb µa nput logic-high level V H For digital 0.7 V cc V nput logic-low level V L inputs V Ver. 1.1 page 5 of 6
6 180SMC_LPF_02 8 DELVERABLES P contents: Schematic or NetList Layout or blackbox Extracted view (optional) GDS DRC, LVS, antenna report. Test bench with saved configurations (optional) Documentation Ver. 1.1 page 6 of 6
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a FEATURES Low Power: 00 mw On-Chip T/H, Reference Single +5 V Power Supply Operation Selectable 5 V or V Logic I/O Wide Dynamic Performance APPLICATIONS Digital Communications Professional Video Medical
Maintenance/ Discontinued
ICs for TV AN22 Dual -W BTL audio power amplifier Overview AN22 is an audio power amplifier IC for the stereo system. In the BTL (balanced transformerless) method, fewer external parts and easier design
SG2525A SG3525A REGULATING PULSE WIDTH MODULATORS
SG2525A SG3525A REGULATING PULSE WIDTH MODULATORS 8 TO 35 V OPERATION 5.1 V REFERENCE TRIMMED TO ± 1 % 100 Hz TO 500 KHz OSCILLATOR RANGE SEPARATE OSCILLATOR SYNC TERMINAL ADJUSTABLE DEADTIME CONTROL INTERNAL
SGM ns, Low-Power, 3V/5V, Rail-to-Rail Input Single-Supply Comparator
150ns, Low-Power, 3V/5V, Rail-to-Rail GENERAL DESCRIPTION The is a single high-speed comparator optimized for systems powered from a 3V or 5V supply. The device features high-speed response, low-power
1.2W Audio Power Amplifier with Active-low Standby Mode
1.2W Audio Power Amplifier with Active-low Standby Mode General Description The SN4991 has been designed for demanding audio applications such as mobile phones and permits the reduction of the number of
OBSOLETE. RF Output DOC-02145
Product Description The PE436 is a high linearity, 5-bit RF Digital Step Attenuator (DSA) covering a 3 db attenuation range in db steps, and is pin compatible with the PE43x series. This 5-ohm RF DSA provides
OBSOLETE. 16-Bit/18-Bit, 16 F S PCM Audio DACs AD1851/AD1861
a FEATURES 0 db SNR Fast Settling Permits 6 Oversampling V Output Optional Trim Allows Super-Linear Performance 5 V Operation 6-Pin Plastic DIP and SOIC Packages Pin-Compatible with AD856 & AD860 Audio
查询 HT9200 供应商 HT9200A/B DTMF Generators
查询 HT9200 供应商 HT9200A/B DTMF Generators Features Operating voltage: 2.0V~5.5V Serial mode for the HT9200A Serial/parallel mode for the HT9200B General Description The HT9200A/B tone generators are designed
10-Bit, 40 MSPS/60 MSPS A/D Converter AD9050 REV. B. Figure 1. Typical Connections FUNCTIONAL BLOCK DIAGRAM
a FEATURES Low Power: 1 mw @ 0 MSPS, mw @ 0 MSPS On-Chip T/H, Reference Single + V Power Supply Operation Selectable V or V Logic I/O SNR: db Minimum at MHz w/0 MSPS APPLICATIONS Medical Imaging Instrumentation
i 1 i 2 LOmod 3 RF OUT 4 RF OUT 5 IF 6 IF 7 ENABLE 8 YYWW
Vector Modulator/Mixer Technical Data HPMX-27 Features 5 MHz to 4 GHz Overall Operating Frequency Range 4-4 MHz LOmod range 2.7-5.5 V Operation (3 V, 25 ma) Differential High Impedance i, q Inputs On-Chip