DS1866 Log Trimmer Potentiometer
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1 og Trimmer Potentiometer FEATURES Single 8-position og Trimmer Potentiometer -db/step Operates from 2.7V to.v supplies Parallel interface control: P0, P1, P2 Standard Resistance Value: 10 kω 8-pin DIPs; 8-pin (10) SOICs Operating Temperature Range: - Industrial: -40 C to +8 C PIN ASSIGNMENT P0 P1 GND V CC P2 8-Pin DIP (300-mil) See Mech. Drawings Section W P0 1 8 V CC P1 2 7 P2 3 6 GND 4 W 8-Pin SOIC (10-mil) See Mech. Drawings Section PIN DESCRIPTION - igh End of Resistor - ow End of Resistor W - Wiper Terminal V CC - 3V or V Power Supply Input P0 - Position Select - Bit 0 P1 - Position Select - Bit 1 P2 - Position Select - Bit 2 GND - Ground DESCRIPTION The DS1866 og Trimmer Potentiometer is a single volatile digital potentiometer having eight positions with a -db resolution per step. The device provides an ideal method for low-cost trimming or volume control using a CPU or manual control input. The device s wiper position is set to one of eight positions by a 3-terminal parallel port. The value of the wiper position is determined by the P0, P1, and P2 port pins. The DS1866 is available as a 10k potentiometer and is available in an industrial temperature grade. Additionally, the DS1866 will operate from 3V or V supplies and is ideal for portable applications requiring low standby current. Two packaging options are available and include the 8-pin (300-mil) DIP, 8-pin (10-mil) SOIC. 1 of
2 OPERATION The DS1866 is a single volatile potentiometer. The device has a total of eight positions providing a resolution of db per step and giving a total attenuation range of 0 db to -3 db. These tap points are accessible to the W-terminal whose position is controlled via a 3-terminal parallel port consisting of input signals P0, P1, and P2. A block diagram of the DS1866 is shown in Figure 1. Wiper position setting of the DS1866 is determined by the states of the P0, P1, and P2 input terminals. Table 1 below outlines position setting versus value of the parallel port inputs. A Position-0 setting places the wiper position at the -terminal of the potentiometer and provides 3 db of attenuation. As wiper position increases, attenuation decreases with Position-7 giving 0 db of attenuation. On power-up, the wiper position of the DS1866 will be set to the P0, P1, and P2 values. P2 P1 P0 (binary) Wiper Position db db db db db db db db Attenuation (db) PIN DESCRIPTIONS V CC - Power Supply Terminal. The DS1866 will support supply voltages ranging from +2.7 to +. volts. GND - Ground Terminal. - igh-end Resistor. This is the high-end terminal of the potentiometer. It is not required that this terminal be connected to a potential greater than the -terminal. Maximum voltage on the -terminal can not exceed the power supply voltage, V CC, or go below ground. - ow-end Resistor. This is the low-end terminal of the potentiometer. It is not required that this terminal be connected to a potential less than the -terminal. Maximum voltage on the -terminal can not exceed the power-supply voltage, V CC, or go below ground. W - Wiper of the Potentiometer. This pin is the wiper terminal of the potentiometer. Its position on the resistor array is controlled by the 3-terminal parallel port. Maximum voltage on the W-terminal can not exceed the power supply voltage, V CC, or go below ground. P0 - Bit 0. P0 is the bit 0 data input to the parallel port. P1 - Bit 1. P1 is the bit 1 data input to the parallel port. P2 - Bit 2. P2 is the bit 2 data input to the parallel port. 2 of
3 One Time Programmability (OTP). The DS1866 can be easily used as an OTP device. This can be accomplished by terminating the P0, P1, or P2 to desired logic levels during system manufacturing. On power up, the value of P0, P1, and P2 will then set the wiper position setting of the DS1866. DS1866 BOCK DIAGRAM Figure 1 3 of
4 ABSOUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature -0.V to +7.0V -40 C to +8 C - C to +12 C 260 C for 10 seconds DS1866 * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. RECOMMENDED DC OPERATING CONDITIONS (-40 C to +8 C) Supply Voltage V CC V 1 Input ogic 1 V I 2.0 V CC +0. V 1, 2 Input ogic 0 V I V 1, Ground GND GND -0. GND +0. Resistor Inputs,, W GND -0. V CC +0. V 1, 3 DC EECTRICA CARACTERISTICS (-40 C to +8 C; V CC = 2.7V to.v) Supply Current I CC 400 µa 4 Input eakage I U µa Wiper Resistance R W Ω Wiper Current I W 1 ma Standby Current I STBY 3 volts volts µa µa ANAOG RESISTOR CARACTERISTICS (-40 C to +8 C; V CC = 2.7V to.v) End to End Resistor % 6 Tolerance Absolute Tolerance db 8 Tap-to-Tap db 9-3 db Cutoff Frequency f CUTOFF 1 Mz Mz 10 Temperature Coefficient 70 ppm/ C CAPACITANCE (2 C; V CC = 2.7V to.v) Input Capacitance C IN pf 11 Output Capacitance C OUT 7 pf 11 AC EECTRICA CARACTERISTICS (-40 C to +8 C; V CC = 2.7V to.v) Parallel Port Transition t PC 00 ns 12 4 of
5 NOTES: 1. All voltages are referenced to ground. DS For V CC = V ± 10% maximum V I = +0.8V. For V CC 3.0 ± 10% V I = +0.6V. For V CC =2.7 volts V I =2.0 volts minimum. 3. Resistor input voltages cannot go below ground or exceed V CC by the amounts as shown in the table. 4. Maximum current specifications are based on the change rate of the parallel port inputs P0, P1, and P2.. Standby current specifications apply when P0, P1, P2 logic inputs are driven within the specified V I or V I levels. 6. Valid at 2 C only. 7. The end-to-end resistance tolerance of the DS1866 can be expected to shift with temperature. owever, this change will not exceed ±20% of the nominal resistor value of the part. 8. Absolute tolerance is used to compare measured wiper voltage versus expected wiper voltage as determined by wiper position. The DS1866 is specified to provide an absolute tolerance of ±1.0 db. 9. Tap-to-tap tolerance is used to determine the change in voltage between successive tap positions. The DS1866 is specified to provide a tap-to-tap tolerance specification of ±1.0 db db cutoff frequency characteristic for the DS1866 is 1 Mz. 11. Capacitance values apply at 2 C. 12. This specification refers to the time difference between parallel port input changes to stabilize a wiper transition. DS1866 ORDERING INFORMATION ORDERING NUMBER PACKAGE OPERATING TEMPERATURE VERSION DS DIP -40 C TO +8 C 10kΩ DS1866Z 8 SOIC (10-MI) -40 C TO +8 C 10kΩ of
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DS1633. High Speed Battery Recharger PIN ASSIGNMENT TO 220 FEATURES. PIN DESCRIPTION V CC Supply Voltage V BAT Battery Output GND Ground
DS1633 High Speed Battery Recharger FEATURES Recharges Lithium, NiCad, NiMH and Lead acid batteries Retains battery and power supply limits in onboard memory PIN ASSIGNMENT TO 220 + Serial 1 wire interface
DS1642 Nonvolatile Timekeeping RAM
www.dalsemi.com Nonvolatile Timekeeping RAM FEATURES Integrated NV SRAM, real time clock, crystal, power fail control circuit and lithium energy source Standard JEDEC bytewide 2K x 8 static RAM pinout
High Speed 12-Bit Monolithic D/A Converters AD565A/AD566A
a FEATURES Single Chip Construction Very High Speed Settling to 1/2 AD565A: 250 ns max AD566A: 350 ns max Full-Scale Switching Time: 30 ns Guaranteed for Operation with 12 V (565A) Supplies, with 12 V
+2.7V to +5.5V, Low-Power, Triple, Parallel 8-Bit DAC with Rail-to-Rail Voltage Outputs
19-1560; Rev 1; 7/05 +2.7V to +5.5V, Low-Power, Triple, Parallel General Description The parallel-input, voltage-output, triple 8-bit digital-to-analog converter (DAC) operates from a single +2.7V to +5.5V
SOIC (SOP) NC A8 A9 A10 A11 A12 A13 A14 A15 A16 NC A18 A17 A7 A6 A5 A4 A3 A2 A1 A0 BYTE/VPP GND O15/A-1 GND O7 O14 O6 O13 O5 O12 O4 VCC
Features Read Access Time - 100 ns Word-wide or Byte-wide Configurable 8-Megabit Flash and Mask ROM Compatable Low Power CMOS Operation -100 µa Maximum Standby - 50 ma Maximum Active at 5 MHz Wide Selection
DS2114. SCSI Terminator FEATURES PIN ASSIGNMENT
DS2114 Terminator FEATURES Fully compliant with, 2 and 3 standards Provides active termination for nine signal lines Laser trimmed termination resistors have 2% tolerance Low dropout voltage regulator
CMOS 12-Bit Multiplying DIGITAL-TO-ANALOG CONVERTER Microprocessor Compatible
CMOS 12-Bit Multiplying DIGITAL-TO-ANALOG CONVERTER Microprocessor Compatible FEATURES FOUR-QUADRANT MULTIPLICATION LOW GAIN TC: 2ppm/ C typ MONOTONICITY GUARANTEED OVER TEMPERATURE SINGLE 5V TO 15V SUPPLY
DS1075. EconOscillator/Divider PRELIMINARY FEATURES PIN ASSIGNMENT FREQUENCY OPTIONS
PRELIMINARY EconOscillator/Divider FEATURES Dual Fixed frequency outputs (200 KHz 100 MHz) User programmable on chip dividers (from 1 513) User programmable on chip prescaler (1, 2, 4) No external components
EVALUATION KIT AVAILABLE Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer
19-514; Rev 2; 11/1 EVAUATION KIT AVAIABE Dual, 256-Tap, Volatile, ow-voltage General Description The dual, 256-tap, volatile, low-voltage linear taper digital potentiometer offers three end-to-end resistance
8-Bit A/D Converter AD673 REV. A FUNCTIONAL BLOCK DIAGRAM
a FEATURES Complete 8-Bit A/D Converter with Reference, Clock and Comparator 30 s Maximum Conversion Time Full 8- or 16-Bit Microprocessor Bus Interface Unipolar and Bipolar Inputs No Missing Codes Over
PERFORMANCE SPECIFICATION SHEET
INCH-POUND MIL-PRF-55310/30B 13 June 2005 SUPERSEDING MIL-PRF-55310/30A 19 October 2004 PERFORMANCE SPECIFICATION SHEET OSCILLATOR, CRYSTAL CONTROLLED, TYPE 1 (CRYSTAL OSCILLATOR (XO)), 450 khz THROUGH
PI5C3384 PI5C3384C PI5C32384 (25Ω)
PI5C3384 PI5C3384C PI5C32384 (25Ω) 0-Bit, 2-Port Bus Switch Features: Near-Zero propagation delay Low noise, 25Ω version (PI5C32384) 5Ω switches connect inputs to outputs (PI5C3384) Direct bus connection
ICS722 LOW COST 27 MHZ 3.3 VOLT VCXO. Description. Features. Block Diagram DATASHEET
DATASHEET ICS722 Description The ICS722 is a low cost, low-jitter, high-performance 3.3 volt designed to replace expensive discrete s modules. The on-chip Voltage Controlled Crystal Oscillator accepts
MM74HC4051 MM74HC4052 MM74HC Channel Analog Multiplexer Dual 4-Channel Analog Multiplexer Triple 2-Channel Analog Multiplexer
8-Channel Analog Multiplexer Dual 4-Channel Analog Multiplexer Triple 2-Channel Analog Multiplexer General Description The MM74HC4051, MM74HC4052 and MM74HC4053 multiplexers are digitally controlled analog
PI3C V/3.3V, High Bandwidth, Hot Insertion 8-Bit, 2-Port, Bus Switch. Description. Features. Pin Configuration. Block Diagram.
Features Near-Zero propagation delay 5-ohm switches connect inputs to outputs High Bandwidth Operation (>400 MHz) Permits Hot Insertion 5V I/O Tolerant Rail-to-Rail 3.3V or 2.5V Switching 2.5V Supply Voltage
ICS276 TRIPLE PLL FIELD PROGRAMMABLE VCXO CLOCK SYNTHESIZER. Description. Features. Block Diagram DATASHEET
DATASHEET ICS276 Description The ICS276 field programmable VCXO clock synthesizer generates up to three high-quality, high-frequency clock outputs including multiple reference clocks from a low-frequency