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Renesas X95840UV20IZ-2.7
- Part No.:
- X95840UV20IZ-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X95840UV20IZ-2.7.pdf
- Description:
- IC DGT POT 50KOHM 256TAP 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:580
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Product details
Overview
X95840UV20IZ-2.7 from Intersil is a quad digital controlled potentiometer (XDCP™) IC implementing four independent 256-tap, 50kΩ CMOS resistor networks with I²C interface, volatile wiper registers, and non-volatile initial value registers-used for precision analog voltage division and rheostat control in programmable gain amplifiers, sensor calibration, and DC bias adjustment circuits.
For engineers reviewing the X95840UV20IZ-2.7 datasheet, X95840UV20IZ-2.7 pinout, X95840UV20IZ-2.7 application, or X95840UV20IZ-2.7 equivalent, key selection criteria include its 50kΩ end-to-end resistance, 2.7V–5.5V supply range, 70Ω typical wiper resistance at 3.3V, I²C addressability via A0–A2 pins, and hardware write protection via WP pin.
Technical Context
The X95840UV20IZ-2.7 integrates four monolithic DCPs sharing a single I²C slave interface with configurable memory access mode (volatile WR vs. non-volatile IVR reads/writes) controlled by register address 8. Each DCP uses resistor ladder + CMOS switch architecture with monotonic 8-bit wiper positioning (00h–FFh), power-up recall from IVR, and mid-scale default (80h) on reset.
Its I²C protocol supports up to eight devices per bus via A0–A2 address pins, includes ACK-based transaction flow control, and enforces hardware write protection via active-low WP pin. Non-volatile writes require STOP condition initiation and complete in 12–20ms, during which SDA/SCL are ignored.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 50kΩ ±20% - defines full-scale voltage divider ratio and rheostat impedance range |
| Resolution | 256 taps (0.4% step size) - enables 8-bit granularity for fine analog tuning |
| Wiper Resistance | 70Ω typical @ 3.3V - limits signal path insertion loss and thermal noise in precision dividers |
| Supply Range | 2.7V to 5.5V - supports operation from single Li-ion or 3.3V/5V system rails |
| Standby Current | <5µA max @ 5.5V - enables low-power retention in battery-backed systems |
| I²C Speed | 400kHz max - compatible with standard-mode I²C controllers without timing redesign |
| Non-volatile Endurance | 150,000 write cycles - ensures long-term calibration stability across product lifetime |
Pinout & Package
Package: 20-lead TSSOP (Thin Shrink Small Outline Package), RoHS-compliant Pb-free plus anneal finish, 6.5mm × 4.4mm body, 0.65mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RH3 | High terminal of DCP3 | Fixed end of potentiometer ladder; connects to VCC or reference voltage in divider mode |
| RL3 | Low terminal of DCP3 | Fixed end of potentiometer ladder; connects to GND or signal return in divider mode |
| RW3 | Wiper terminal of DCP3 | Adjustable tap point; output node for voltage division or variable resistance path |
| A2 | I²C device address input | MSB of 3-bit hardware address; sets slave address alongside A1/A0 for multi-device bus |
| SCL | I²C clock input | Master-generated synchronous clock; controls timing of all data transfers |
| SDA | I²C bidirectional data line | Open-drain serial data path; requires external pull-up for communication |
| GND | Ground reference | Primary return path for analog and digital circuitry; must be low-impedance |
| RW2, RL2, RH2 | Wiper/Low/High terminals of DCP2 | Second independent DCP channel with identical electrical behavior to DCP3 |
| RW1, RL1, RH1 | Wiper/Low/High terminals of DCP1 | Third independent DCP channel; supports simultaneous multi-channel calibration |
| A0, A1 | I²C device address inputs | LSBs of 3-bit hardware address; enable up to eight X95840 devices on one I²C bus |
| VCC | Power supply | Single supply for analog ladder and digital logic; decoupling capacitor required near pin |
| WP | Hardware write protect | Active-low pin; disables all I²C writes when pulled low, preventing accidental configuration changes |
| RH0, RL0, RW0 | Wiper/Low/High terminals of DCP0 | Fourth independent DCP channel; enables full quad-channel analog tuning |
Key Features
| Feature | Design Value |
|---|---|
| Quad 50kΩ DCPs in single package | Reduces board space and BOM count versus discrete potentiometers or multiple single-channel ICs |
| Non-volatile IVR storage | Preserves factory or user-defined startup wiper positions across power cycles without external EEPROM |
| I²C address pins (A0–A2) | Enables daisy-chaining up to eight devices on one bus, simplifying system-level calibration architecture |
| Hardware WP pin | Provides fail-safe write protection independent of firmware state-critical for field-deployed calibration integrity |
| 2.7V minimum supply | Supports direct integration into low-voltage microcontroller systems without level-shifting or auxiliary regulators |
Applications
| Programmable Gain Amplifier Calibration | Sensor Offset/Scale Adjustment |
|---|---|
Use Scenario: Precision op-amp circuits requiring digitally adjustable feedback or input resistors to set gain dynamically across operating modes. IC Role / Device Role / Timing Role: X95840UV20IZ-2.7 acts as four independent, non-volatile programmable resistors in feedback networks of instrumentation amplifiers. Use Value: Enables factory-trimmed and field-updatable gain settings without manual potentiometer replacement or soldering. | Use Scenario: Industrial temperature, pressure, or current sensors needing individual channel offset and span calibration during production test. IC Role / Device Role / Timing Role: X95840UV20IZ-2.7 serves as four parallel voltage divider elements to inject precise DC bias and scaling factors into sensor signal chains. Use Value: Achieves <±0.5 LSB integral non-linearity and <±2 LSB DCP-to-DCP matching for consistent multi-sensor performance. |
| DC Bias Control in RF Front-Ends | Audio Tone/Volume Control |
Use Scenario: GaAs FET or LNA bias networks requiring stable, low-noise, digitally set quiescent current points across temperature and voltage variation. IC Role / Device Role / Timing Role: X95840UV20IZ-2.7 operates in rheostat mode (RW–RL) to set gate bias voltage with minimal wiper resistance impact. Use Value: Delivers 70Ω typical wiper resistance and ±45ppm/°C resistance tempco-minimizing drift-induced gain compression. | Use Scenario: Consumer audio DAC output stages or headphone amplifiers requiring smooth, glitch-free volume/tone control without mechanical wear. IC Role / Device Role / Timing Role: X95840UV20IZ-2.7 functions as dual-channel voltage dividers (DCP0+DCP1 for left/right, DCP2+DCP3 for bass/treble). Use Value: Provides 256-step resolution with <±0.2 LSB DNL and mid-scale glitch suppression (Figure 13) for artifact-free audio response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRUZ10 | Quad 10kΩ DCP, SPI interface, no hardware WP pin, 3V–5.5V supply | Lacks I²C compatibility and write-protection; requires SPI host and external protection logic | Select when SPI-native MCU is used and non-volatile recall is less critical than cost |
| MCP42050-I/SL | Quad 50kΩ DCP, SPI interface, 2.7V–5.5V, 100kΩ wiper resistance, no IVR | No non-volatile startup recall; wiper resistance ~1.5× higher, limiting low-noise analog use | Choose for SPI-based designs where power-on default position is managed in firmware |
Compared with AD5204BRUZ10 and MCP42050-I/SL, the X95840UV20IZ-2.7 uniquely combines I²C compatibility, hardware write protection, and factory-programmed non-volatile IVRs-making it optimal for embedded systems requiring robust, self-contained analog tuning without host intervention at power-up.
Availability
X95840UV20IZ-2.7 is available at Aetrix Electronics and suitable for programmable gain amplifiers, sensor calibration modules, RF bias networks, and audio tone control circuits requiring stable component supply and long-term calibration integrity.
Supply support for X95840UV20IZ-2.7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Intersil Corporation (now part of Renesas Electronics) is a U.S.-based analog and mixed-signal semiconductor company focused on high-performance power management, precision analog, and interface solutions.
The X95840 series was designed specifically for digitally reconfigurable analog signal conditioning-targeting industrial automation, test equipment, and communications infrastructure where mechanical potentiometer reliability and manual calibration are unacceptable.
FAQ
What is the total resistance tolerance of the X95840UV20IZ-2.7?
The X95840UV20IZ-2.7 has a total resistance (RH to RL) tolerance of ±20%, specified for the "U" version (50kΩ). This tolerance applies across the full operating temperature range (-40°C to +85°C) and affects absolute voltage division accuracy but not relative tap-to-tap linearity, which remains within ±1 LSB INL.
Does the X95840UV20IZ-2.7 retain wiper settings after power cycling?
Yes-the X95840UV20IZ-2.7 retains its startup wiper positions using non-volatile Initial Value Registers (IVRs). At power-up, the device automatically loads the stored IVR values into the volatile Wiper Registers (WRs), ensuring repeatable analog behavior without host initialization. IVR data retention is rated for 50 years at ≤75°C.
Can the X95840UV20IZ-2.7 operate from a 2.7V supply?
Yes-the X95840UV20IZ-2.7 is fully specified for operation from 2.7V to 5.5V. At 2.7V, it maintains 256-tap resolution, I²C compatibility (400kHz), and <5µA standby current. Wiper resistance increases slightly (typ. 100Ω vs. 70Ω at 3.3V), but remains within design margins for most analog applications.
How does the WP pin function on the X95840UV20IZ-2.7?
The WP (Write Protect) pin on the X95840UV20IZ-2.7 is an active-low hardware lock. When pulled low, it disables all I²C write operations-including volatile WR updates and non-volatile IVR programming-regardless of command sequence. This prevents unintended configuration changes during system operation or firmware glitches.
What is the maximum I²C clock frequency supported by the X95840UV20IZ-2.7?
The X95840UV20IZ-2.7 supports I²C standard-mode operation up to 400kHz. Its timing parameters-including tLOW (1300ns), tHIGH (600ns), and tSU:STA (600ns)-are fully compliant with the I²C specification at this rate. No external speed reduction or timing margin adjustments are required for standard-mode hosts.
X95840UV20IZ-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 256
- Resistance (Ohms):
- 50k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 70
X95840UV20IZ-2.7 FAQ
1.How can I place an order for X95840UV20IZ-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X95840UV20IZ-2.7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for X95840UV20IZ-2.7 reliable?
The price and inventory of X95840UV20IZ-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X95840UV20IZ-2.7 is usually 5 days.
3.What payment methods are accepted for X95840UV20IZ-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X95840UV20IZ-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X95840UV20IZ-2.7?
X95840UV20IZ-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X95840UV20IZ-2.7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for X95840UV20IZ-2.7?
For technical support, including X95840UV20IZ-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X95840UV20IZ-2.7 requirements.
6.How does Aetrix verify that X95840UV20IZ-2.7 is sourced from the original manufacturer or authorized distributors?
All X95840UV20IZ-2.7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that X95840UV20IZ-2.7 meets industry standards.
7.What is the process for return or replacement of X95840UV20IZ-2.7?
All X95840UV20IZ-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X95840UV20IZ-2.7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The X95840UV20IZ-2.7 part is unused and in its original packaging.
Return procedure for X95840UV20IZ-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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