My Inquiry
My Account
Renesas X9319UP8I
- Part No.:
- X9319UP8I
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
X9319UP8I.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,512
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
X9319UP8I from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 10 kΩ end-to-end resistance with 100 wiper tap points, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It functions as a solid-state three-terminal voltage divider or two-terminal variable resistor in precision analog trimming circuits.
For engineers reviewing the X9319UP8I datasheet, X9319UP8I pinout, X9319UP8I application, or X9319UP8I equivalent, this device supports stable DC bias adjustment, laser diode current control, and voltage regulator output tuning where repeatable, power-loss-resilient resistance setting is required.
Technical Context
The X9319UP8I integrates a 99-element resistor array with make-before-break wiper switching, a 7-bit up/down counter, and EEPROM-based nonvolatile memory for wiper position retention across power cycles. Its control logic responds to negative-edge-triggered INC pulses under active CS low, with U/D determining direction.
It operates at VCC = 5V ±10%, supports terminal voltages from 0 to +10V, and delivers ±1% absolute linearity over –40°C to +85°C. Wiper resistance is typ. 40 Ω, and ratiometric temperature coefficient is ±20 ppm/°C - enabling stable ratio-based voltage division in varying thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10 kΩ ±20% - defines full-scale analog range for voltage divider or current-limiting applications. |
| Wiper positions | 100 discrete taps (0–99) - enables 1% resolution for fine-grained analog calibration. |
| Nonvolatile storage | 100-year data retention, 100,000 write cycles - ensures factory-set or user-trimmed values persist across decades and repeated field adjustments. |
| Supply voltage | 4.5 V to 5.5 V - compatible with standard 5 V logic and analog rails without level-shifting. |
| Terminal voltage range | 0 V to +10 V on RH/RL/RW - supports direct interfacing with op-amp outputs, reference buffers, and regulator feedback nodes. |
| Active supply current | ≤3 mA - minimizes system power overhead during dynamic wiper adjustment. |
| Standby current | ≤1 mA - reduces quiescent draw when idle but ready for command. |
Pinout & Package
Package: 8-lead SOIC (150 mil), Pb-free (RoHS compliant), JEDEC MS-012 outline M8.15E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control signal; toggling while CS is low advances or retracts wiper per U/D state. |
| 2 U/D | Direction control input | Logic level selects wiper movement direction: HIGH = increment, LOW = decrement. |
| 3 RH | High terminal | Fixed end of resistor array; connects to higher-potential node in voltage divider configuration. |
| 4 VSS | Ground reference | System ground return for internal logic and resistor array; must be tied before VCC ramp-up. |
| 5 RW | Wiper terminal | Movable contact point; output voltage or current path with typ. 40 Ω series resistance. |
| 6 RL | Low terminal | Fixed end of resistor array; connects to lower-potential node (e.g., ground or feedback reference). |
| 7 CS | Chip select | Active-low enable; initiates control sequence and triggers nonvolatile store when raised high with INC high. |
| 8 VCC | Supply voltage | +5 V ±10% digital/analog supply; powers control logic and resistor array; requires clean, decoupled rail. |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and environmental sensitivity inherent in analog potentiometers. |
| 3-wire serial interface | Requires only CS, U/D, and INC signals - no clock or data lines needed, simplifying MCU GPIO usage. |
| Make-before-break switching | Prevents open-circuit transients during wiper movement, avoiding glitches in sensitive analog feedback paths. |
| Temperature-compensated array | ±20 ppm/°C ratiometric TC ensures stable voltage division ratios across industrial temperature range (–40°C to +85°C). |
| Power-up recall | Automatically restores last stored wiper position within 500 µs of VCC stabilization - enables deterministic startup behavior. |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
|
Use Scenario: Adjusting VCOM or gamma reference voltage in TFT-LCD panels to maintain consistent contrast and grayscale fidelity across temperature and aging. IC Role / Device Role / Timing Role: Three-terminal voltage divider setting precise DC bias levels at panel driver IC inputs. Use Value: Enables factory calibration and field recalibration without hardware modification; nonvolatile storage preserves settings through panel power cycling. |
Use Scenario: Setting precise forward current for edge-emitting or VCSEL laser diodes in optical transceivers and sensing modules. IC Role / Device Role / Timing Role: Two-terminal variable resistor in the laser diode cathode path, controlling current via feedback loop gain. Use Value: Delivers 1% resolution trim and retains optimal bias point after hot-swap or firmware reset - critical for eye-diagram compliance. |
| Voltage Regulator Output Control | Offset Voltage Trim |
|
Use Scenario: Dynamically adjusting output voltage of adjustable LDOs or switching regulators (e.g., LM317, LT308x) in programmable power supplies. IC Role / Device Role / Timing Role: Replaces fixed resistor in feedback divider network to modulate regulation setpoint via digital command. Use Value: Supports remote voltage scaling, adaptive load-line compensation, and multi-voltage rail sequencing without manual resistor changes. |
Use Scenario: Nulling input offset voltage in precision op-amp circuits (e.g., instrumentation amplifiers, sensor front-ends) during production test or field calibration. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp offset null network (e.g., pins 1–5 of LM741 or similar). Use Value: Achieves sub-mV offset correction with repeatability; stored trim survives board rework and long-term storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ10 | Single-channel, I²C interface, 10 kΩ, 128-tap, ±30% RTOTAL tolerance, 100-year EEPROM retention. | Requires I²C master; lacks 3-wire simplicity; wider resistance tolerance affects absolute accuracy in voltage divider use. | Choose when I²C bus is already present and higher tap count justifies added protocol overhead. |
| MCP41010-I/P | Single-channel, SPI interface, 10 kΩ, 257-tap, volatile wiper register (no auto-recall); requires external MCU to reload on power-up. | No nonvolatile storage - unsuitable for systems requiring guaranteed startup position without host intervention. | Choose when SPI is preferred and host firmware can manage wiper initialization reliably at boot. |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9319UP8I uniquely combines 3-wire minimal GPIO footprint, guaranteed power-up recall, and ±20% RTOTAL tolerance optimized for analog trimming - making it ideal for cost-sensitive, self-contained calibration systems.
Availability
X9319UP8I is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias control, and voltage regulator output control requiring stable component supply, long-term calibration integrity, and industrial temperature operation.
Supply support for X9319UP8I 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) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The X9319UP8I belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for analog trimming tasks where mechanical reliability, nonvolatile setting retention, and simple digital control are essential.
FAQ
What is the operating temperature range for the X9319UP8I?
The X9319UP8I is rated for –40°C to +85°C (industrial grade), matching its SOIC packaging and internal temperature-compensated resistor array. This range is confirmed in the Absolute Maximum Ratings and Potentiometer Characteristics tables of the FN8185 datasheet, and applies to all key parameters including linearity, endurance, and nonvolatile retention.
Does the X9319UP8I require an external clock or microcontroller to operate?
No, the X9319UP8I operates with only three digital control signals - CS, U/D, and INC - and requires no external clock source. Its internal counter and decoder respond directly to INC edge transitions. A microcontroller or discrete logic (e.g., 555 timer, flip-flops) can drive it, but no clock signal beyond the INC pulse train is needed for basic wiper positioning.
How does the X9319UP8I store and recall wiper position after power loss?
The X9319UP8I stores the current wiper position in on-chip EEPROM when CS is raised high while INC is held high. Upon subsequent power-up, the device automatically recalls that value within 500 µs of VCC stabilization and sets the wiper accordingly - no host action is required. This behavior is guaranteed by design and verified in the Power-Up and Down Requirements section of the datasheet.
Can the X9319UP8I be used in a two-terminal variable resistor configuration?
Yes, the X9319UP8I supports two-terminal operation by connecting either RH or RL to RW (shorting one fixed terminal to the wiper), effectively creating a digitally adjustable rheostat. The datasheet explicitly confirms this mode in the Applications section and Figure 2, and specifies IW (wiper current) limits of ±3.0 mA for safe operation in current-control applications.
What is the maximum voltage allowed across RH and RL terminals of the X9319UP8I?
The X9319UP8I allows up to +10 V across RH and RL terminals with respect to VSS, as specified in the Absolute Maximum Ratings table (RH, RW, RL to ground: +12 V) and confirmed in the Potentiometer Characteristics table (VRH/RL: 0 to +10 V). Exceeding +10 V risks violating the recommended operating conditions and may impact linearity or reliability.
X9319UP8I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 100
- Resistance (Ohms):
- 50k
- Interface:
- Up/Down (U/D, INC, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-PDIP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9319UP8I FAQ
1.How can I place an order for X9319UP8I through Aetrix?
Please submit a Request for Quotation (RFQ) for X9319UP8I 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 X9319UP8I reliable?
The price and inventory of X9319UP8I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9319UP8I is usually 5 days.
3.What payment methods are accepted for X9319UP8I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9319UP8I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9319UP8I?
X9319UP8I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9319UP8I 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 X9319UP8I?
For technical support, including X9319UP8I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9319UP8I requirements.
6.How does Aetrix verify that X9319UP8I is sourced from the original manufacturer or authorized distributors?
All X9319UP8I 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 X9319UP8I meets industry standards.
7.What is the process for return or replacement of X9319UP8I?
All X9319UP8I units undergo pre-shipment inspection (PSI). If there is an issue with X9319UP8I, 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 X9319UP8I part is unused and in its original packaging.
Return procedure for X9319UP8I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9319UP8I Tags
-
MCP4018T-103E/LT
Microchip Technology
-
MCP4018T-503E/LT
Microchip Technology
-
MCP4011T-103E/SN
Microchip Technology
-
MCP4018T-104E/LT
Microchip Technology
-
MCP4017T-503E/LT
Microchip Technology
-
MCP4018T-502E/LT
Microchip Technology
-
MCP4017T-103E/LT
Microchip Technology
-
MCP4531T-103E/MF
Microchip Technology
-
MCP4021T-202E/SN
Microchip Technology
-
MCP4023T-103E/CH
Microchip Technology
-
MCP4022T-503E/CH
Microchip Technology
-
MCP4551T-502E/MS
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
