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Renesas X9317ZV8I
- Part No.:
- X9317ZV8I
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X9317ZV8I.pdf
- Description:
- IC DGTL POT 1KOHM 100TAP 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,555
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Product details
Overview
X9317ZV8I from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 discrete wiper tap positions, nonvolatile wiper position storage, and 3-wire up/down serial interface. It operates as a three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in DC-coupled signal paths.
For engineers reviewing the X9317ZV8I datasheet, X9317ZV8I pinout, X9317ZV8I application, or X9317ZV8I equivalent, this device supports low-noise bias control, gain/offset trim, and laser diode current regulation with ±20% end-to-end resistance tolerance, ±300 ppm/°C total resistance temperature coefficient, and <5 µA standby current.
Technical Context
The X9317ZV8I integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 taps. Its "make-before-break" switching ensures continuity during wiper transitions, while the resistor array provides ratiometric tracking with ±20 ppm/°C ratiometric temperature coefficient.
Control logic responds to CS (chip select), U/D (direction), and edge-triggered INC inputs. Wiper position is stored in nonvolatile memory only when CS rises while INC is high-enabling deterministic power-up behavior without unintended writes during initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end Resistance | 10 kΩ ±20% - defines full-scale analog range and load interaction in voltage divider configurations |
| Wiper Resolution | 100 taps (1% step size) - enables precise 99-step adjustment of analog bias or gain without DAC or microcontroller |
| Supply Voltage Range | 2.7 V to 5.5 V - supports single-supply operation across industrial and commercial rails including 3.3 V and 5 V systems |
| Standby Current | <5 µA - minimizes quiescent power in battery-backed or energy-sensitive applications |
| Wiper Resistance | 200 Ω typical (400 Ω max at 2.7 V) - limits insertion error and thermal noise in low-impedance feedback paths |
| Nonvolatile Endurance | 100,000 data changes per bit - ensures long-term reliability for field-adjustable calibration settings |
| Temperature Range | –40°C to +85°C - qualified for industrial environments with guaranteed performance across full range |
| Output Noise | –120 dBV (ref. 1 kHz) - suitable for low-noise audio, sensor bias, and precision reference trimming |
Pinout & Package
Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing). Dimensions: 4.40 mm × 3.0 mm × 1.20 mm max height. Moisture Sensitivity Level (MSL): 1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge-triggered control line; toggling moves wiper one tap in direction set by U/D |
| 2 (U/D) | Direction control input | Logic level determines wiper increment (+) or decrement (–) on each INC edge |
| 3 (RH) | High terminal | Fixed end of resistor array; connects to higher potential in voltage divider mode |
| 4 (VSS) | Ground reference | Return path for supply and signal; must be low-impedance for stable wiper voltage |
| 5 (RW) | Wiper output | Movable terminal; series resistance ≤400 Ω at 2.7 V enables direct connection to op-amp inputs |
| 6 (RL) | Low terminal | Fixed end of resistor array; connects to lower potential or ground in voltage divider mode |
| 7 (CS) | Chip select | Active-low enable; rising edge with INC high initiates nonvolatile store; high state disables interface |
| 8 (VCC) | Supply voltage | 2.7–5.5 V CMOS rail; powers logic and resistor array; decoupling required within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last-set position across power cycles-eliminates need for external EEPROM or startup calibration |
| Temperature-compensated array | ±300 ppm/°C absolute TC and ±20 ppm/°C ratiometric TC ensure stable voltage division over –40°C to +85°C |
| Make-before-break switching | Prevents open-circuit transients during wiper movement-critical for stability in closed-loop amplifier feedback |
| Low-power CMOS interface | ICC1 ≤ 80 µA active, ISB ≤ 5 µA standby-enables integration into always-on sensor nodes and portable devices |
| Three-terminal or two-terminal operation | Configurable as voltage divider (RH–RW–RL) or variable resistor (RW–RL or RW–RH)-supports both gain and offset trim |
| Pb-free RoHS compliance | Matte tin e3 termination compatible with SnPb and Pb-free reflow profiles per J-STD-020 |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting VCOM or gamma reference voltages in TFT-LCD panels to compensate for panel-to-panel variation and temperature drift. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing stable, digitally adjustable DC bias voltage with nonvolatile recall at power-on. Use Value: Eliminates manual potentiometer tuning and mechanical wear; enables factory calibration storage and field recalibration via simple 3-wire interface. |
Use Scenario: Setting precise bias current for laser diodes in optical transceivers, barcode scanners, or medical lasers where current accuracy directly impacts output power and lifetime. IC Role / Device Role / Timing Role: Two-terminal variable resistor in series with laser diode cathode to regulate forward current without introducing DAC quantization noise. Use Value: Delivers <–120 dBV noise floor and ±1% resolution-critical for minimizing optical power ripple and maintaining Class 1 eye safety compliance. |
| Voltage Regulator Output Trim | DC Offset Adjustment in Instrumentation Amplifiers |
Use Scenario: Fine-tuning output voltage of adjustable LDOs or switching regulators (e.g., LM317, LT3080) to meet tight tolerance requirements across production lots. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in feedback divider network to set regulated output voltage. Use Value: Enables post-manufacturing calibration and field updates without soldering; ±20% RTOTAL tolerance accommodates standard 1% feedback resistors. |
Use Scenario: Nulling input offset voltage in precision instrumentation amplifiers (e.g., AD620, INA128) used in strain gauge, thermocouple, or medical sensor front-ends. IC Role / Device Role / Timing Role: Two-terminal variable resistor in offset null circuit, directly adjusting amplifier's internal bias node. Use Value: Achieves sub-millivolt offset correction with 100-step repeatability and no drift from mechanical wear or vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ-10 | I²C interface, 256-tap resolution, 10 kΩ nominal, ±30% RTOTAL tolerance, 100-year data retention | Requires I²C host; higher resolution but looser resistance tolerance; no 3-wire compatibility | Select when I²C bus is available and finer 0.39% steps are needed over 100-tap granularity |
| MCP41010-I/P | SPI interface, 257-tap resolution, 10 kΩ nominal, ±20% RTOTAL, 100-year retention, 5.5 V max VDD | Requires SPI master; incompatible control protocol; same package footprint but different pinout | Choose for SPI-based systems needing identical resistance range and industrial temp grade, accepting interface redesign |
Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9317ZV8I offers deterministic 3-wire simplicity, lower interface pin count, and guaranteed make-before-break operation-making it optimal for cost-sensitive, space-constrained designs where minimal GPIO usage and analog continuity are critical.
Availability
X9317ZV8I is available at Aetrix Electronics and suitable for LCD bias control, laser diode current regulation, and voltage regulator output trimming requiring stable component supply, long-term calibration retention, and industrial-grade temperature performance.
Supply support for X9317ZV8I 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and infrastructure markets.
The X9317ZV8I belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimmers in precision analog circuits where digital control, nonvolatile storage, and long-term reliability are essential.
FAQ
What is the maximum wiper current rating for the X9317ZV8I?
The X9317ZV8I supports a maximum wiper current (IW) of ±4.4 mA under all operating conditions. This limit applies regardless of VCC voltage or wiper position and is defined by the absolute maximum rating for RH/RW/RL terminals. Exceeding this current may cause irreversible damage to the internal switching network or resistor elements. The X9317ZV8I is intended for signal-level trimming-not power-level adjustment-and should not be used in series with loads drawing more than 4.4 mA.
Does the X9317ZV8I require an external pull-up or pull-down resistor on its control pins?
No, the X9317ZV8I does not require external pull-up or pull-down resistors on CS, U/D, or INC inputs. Its input leakage current is specified at ±10 µA across the full temperature range, and VIH/VIL thresholds are defined relative to VCC (VIH ≥ 0.7×VCC, VIL ≤ 0.1×VCC). Microcontroller GPIOs configured with standard push-pull outputs can drive these inputs directly. External resistors are unnecessary unless system-level noise immunity or fail-safe default states are required beyond the device's native specifications.
How does the X9317ZV8I handle power-up sequencing to prevent unintended wiper movement?
The X9317ZV8I requires proper power-up sequencing to avoid spurious wiper shifts: VCC and VSS must be applied before any signals on CS, U/D, or INC. The datasheet specifies that CS and INC should be held high during power ramp-up. If CS or INC transitions low before VCC stabilizes, the internal counter may misinterpret noise as valid commands. The X9317ZV8I achieves wiper stability within 5 µs after VCC reaches final value, but reliable operation depends on adhering to the recommended sequence-no internal power-on reset circuit overrides incorrect timing.
Can the X9317ZV8I be used in a 2.7 V-only system without de-rating performance?
Yes, the X9317ZV8I is fully specified for operation down to 2.7 V, including all electrical parameters: wiper resistance (≤1000 Ω), active current (≤80 µA), and timing (tCYC ≤ 2 µs). Its 2.7–5.5 V supply range is explicitly tested and guaranteed across the full –40°C to +85°C temperature range. Unlike earlier variants limited to 4.5–5.5 V, the X9317ZV8I maintains full functionality-including nonvolatile store and 100-tap resolution-at minimum VCC, making it suitable for modern low-voltage embedded systems.
What is the significance of the "make-before-break" switching behavior in the X9317ZV8I?
The "make-before-break" switching ensures that the new wiper tap connects before the previous one disconnects-preventing momentary open-circuit conditions during position changes. This behavior is critical in feedback networks (e.g., op-amp gain-setting resistors) where an open circuit could cause output saturation or latch-up. In the X9317ZV8I, this feature is implemented in hardware and guaranteed across all 100 taps and temperature ranges, eliminating the need for external glitch suppression or software debouncing.
X9317ZV8I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 100
- Resistance (Ohms):
- 1k
- Interface:
- Up/Down (U/D, INC, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9317ZV8I FAQ
1.How can I place an order for X9317ZV8I through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317ZV8I 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 X9317ZV8I reliable?
The price and inventory of X9317ZV8I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9317ZV8I is usually 5 days.
3.What payment methods are accepted for X9317ZV8I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317ZV8I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317ZV8I?
X9317ZV8I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317ZV8I 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 X9317ZV8I?
For technical support, including X9317ZV8I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317ZV8I requirements.
6.How does Aetrix verify that X9317ZV8I is sourced from the original manufacturer or authorized distributors?
All X9317ZV8I 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 X9317ZV8I meets industry standards.
7.What is the process for return or replacement of X9317ZV8I?
All X9317ZV8I units undergo pre-shipment inspection (PSI). If there is an issue with X9317ZV8I, 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 X9317ZV8I part is unused and in its original packaging.
Return procedure for X9317ZV8I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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