x9259uv24i-2.7c7975 Intersil Corporation, x9259uv24i-2.7c7975 Datasheet
x9259uv24i-2.7c7975
Related parts for x9259uv24i-2.7c7975
x9259uv24i-2.7c7975 Summary of contents
Page 1
Data Sheet Quad Digitally-Controlled (XDCP™) Potentiometers The X9259 integrates four digitally controlled potentiometers (XDCP monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the ...
Page 2
... X9259UV ZF X9259UV24I-2.7* X9259UV G X9259UV24IZ-2.7* (Note) X9259UV ZG NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. *Add " ...
Page 3
Circuit Level Applications • Vary the gain of a voltage amplifier • Provide programmable dc reference voltages for comparators and detectors • Control the volume in audio circuits • Trim out the offset voltage error in a voltage amplifier circuit ...
Page 4
Pin Descriptions Bus Interface Pins SERIAL DATA INPUT/OUTPUT (SDA) The SDA is a bidirectional serial data input/output pin for a 2- Wire slave device and is used to transfer data into and out of the device. It receives device address, ...
Page 5
Principles of Operation The X9259 is an integrated circuit incorporating four DCPs and their associated registers and counters, and the serial interface providing direct communication between a host and the potentiometers. DCP Description Each DCP is implemented with a combination ...
Page 6
Serial Interface The X9259 supports a bidirectional bus oriented protocol. The protocol defines any device that sends data onto the bus as a transmitter and the receiving device as the receiver. The device controlling the transfer is a master and ...
Page 7
SCL SDA START FIGURE 2. VALID DATA CHANGES, START, AND STOP CONDITIONS SCL FROM MASTER SDA OUTPUT FROM TRANSMITTER SDA OUTPUT FROM RECEIVER START FIGURE 3. ACKNOWLEDGE RESPONSE FROM RECEIVER Identification Byte The first byte sent to the X9259 from ...
Page 8
TABLE 3. IDENTIFICATION BYTE FORMAT Device Type Identifier ID3 ID2 ID1 (MSB) TABLE 4. INSTRUCTION BYTE FORMAT Instruction Opcode (MSB) TABLE 5. INSTRUCTION SET INSTRUCTION I3 Read Wiper Counter 1 Register Write Wiper Counter ...
Page 9
Instructions Four of the nine instructions are three bytes in length. These instructions are: • Read Wiper Counter Register – read the current wiper position of the selected potentiometer, • Write Wiper Counter Register – change current wiper position of ...
Page 10
SCL SDA ID3 ID2 ID1 ID0 External A Device ID R Address T FIGURE 6. INCREMENT/DECREMENT INSTRUCTION SEQUENCE 2-WIRE INTERFACE INC/DEC CMD Issued SCL SDA X9259 I3 ...
Page 11
Instruction Format Read Wiper Counter Register (WCR) Device Type Device S Identifier Addresses Write Wiper Counter Register (WCR) Device Type Device S Identifier Addresses ...
Page 12
Global XFR Wiper Counter Register (WCR) to Data Register (DR) S Device Type Device T Identifier Addresses Transfer Wiper Counter Register (WCR) to Data Register (DR) S Device Type ...
Page 13
Absolute Maximum Ratings Temperature under bias . . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C Storage temperature . . . . . . . . ...
Page 14
DC Electrical Specifications Over the recommended operating conditions unless otherwise specified. SYMBOL PARAMETER I V supply current CC1 CC (active supply current CC2 CC (non-volatile write current (standby Input leakage current LI I ...
Page 15
Equivalent A.C. Load Circuit 5V 1533Ω SDA pin 100pF AC Timing SYMBOL f Clock Frequency SCL t Clock Cycle Time CYC t Clock High Time HIGH t Clock Low Time LOW t Start Setup Time SU:STA t Start Hold Time ...
Page 16
Symbol Table WAVEFORM INPUTS Must be steady May change from Low to High May change from High to Low Don’t Care: Changes Allowed N/A Timing Diagrams Start and Stop Timing (START) SCL t SU:STA SDA Input Timing t CYC SCL ...
Page 17
XDCP Timing (for All Load Instructions) SCL SDA VWx Write Protect and Device Address Pins Timing SCL SDA WP A0 X9259 LSB t WRL (START) (STOP) ... (Any Instruction) ... ... t t SU:WPA HD:WPA (STOP) FN8169.5 April ...
Page 18
Applications Information Basic Configurations of Electronic Potentiometers V R Three terminal Potentiometer; Variable voltage divider Application Circuits Non inverting Amplifier – (1 Offset Voltage Adjustment R ...
Page 19
Application Circuits (continued) Attenuator – -1/2 ≤ G ≤ +1/2 Inverting Amplifier ...
Page 20
Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the ...
Page 21
... Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...