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Renesas X9460KV14IZ
- Part No.:
- X9460KV14IZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X9460KV14IZ.pdf
- Description:
- IC DGTL POT 33KOHM 32TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,649
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Product details
Overview
X9460KV14IZ from Xicor is a dual-channel digitally controlled logarithmic potentiometer IC for stereo audio gain control, featuring two 32-tap log arrays (33kΩ each), zero-amplitude wiper switching, 2-wire I²C interface, and ±2.7V to ±5.5V dual analog supply operation.
For engineers reviewing the X9460KV14IZ datasheet, X9460KV14IZ pinout, X9460KV14IZ application, or X9460KV14IZ equivalent, this page delivers verified specifications, TSSOP-14 pin mapping, mute-on-power-up behavior, -92dB mute attenuation, and stereo channel synchronization capability for audio system design.
Technical Context
The X9460KV14IZ integrates two independent CMOS resistor arrays-each with 31 polysilicon segments and 32 tap points-controlled by volatile 5-bit Wiper Counter Registers (WCR). Wiper movement is synchronized to audio zero-crossing via dedicated detection circuitry to eliminate pop/click artifacts.
It operates as an I²C slave device with four cascadable addresses (A1/A0), supports simultaneous or independent left/right channel control, and implements increment/decrement commands via SCL-triggered SDA level sampling-enabling real-time volume adjustment without host CPU overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total resistance | 33kΩ per channel (±20%), enabling precise stereo gain matching in line-level and headphone driver stages |
| Control range | -62dB to 0dB (11×-1dB, 10×-2dB, 5×-3dB, 4×-4dB steps + 1×mute), covering full consumer audio attenuation needs |
| Mute attenuation | -92dB at power-up, ensuring silent startup in amplifiers and DAC output stages |
| SNR / THD+N | -96dB SNR and -95dB THD+N @1kHz/1Vrms, meeting high-fidelity audio signal path requirements |
| Crosstalk rejection | -102dB @1kHz, preventing audible leakage between left/right channels in stereo systems |
| Supply range | V+/V− = ±2.7V to ±5.5V; VCC/VSS = 2.7V to 5.5V, supporting dual-supply op-amp interfaces and single-supply microcontrollers |
| Interface | Standard 2-wire I²C (400kHz max), with address pins A1/A0 allowing up to 4 devices on one bus |
Pinout & Package
Package: 14-lead TSSOP (V14), 4.4mm × 5.0mm body, 0.65mm pitch, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | I²C bidirectional data line | Open-drain interface requiring external pull-up; supports multi-drop bus with other I²C peripherals |
| 2 (SCL) | I²C clock input | Master-generated timing source; controls wiper update timing during increment/decrement mode |
| 3 (VCC) | Digital supply voltage | Powers logic core and interface; ramp rate must be 0.2–50 V/ms to prevent latch-up |
| 4 (V+) | Positive analog supply | Bias for RH terminals; must exceed all analog pin voltages (RH/RL/RW) to avoid conduction damage |
| 5 (VSS) | Digital ground reference | Common return for digital logic; isolated from analog ground but tied at system star point |
| 6 (A1), 7 (A0) | Slave address inputs | Set LSBs of 8-bit I²C address (01010A1A0); floating defaults to GND for base address 0x50 |
| 8 (RW-Left) | Left channel wiper output | Variable tap point for left audio path; switches at zero-crossing to suppress transients |
| 9 (RL-Left) | Left channel low terminal | Connects to signal ground or negative rail in dual-supply configurations |
| 10 (RH-Left) | Left channel high terminal | Connects to audio source or amplifier input; defines full-scale attenuation range |
| 11 (RW-Right) | Right channel wiper output | Independent or synchronized with left wiper; enables mono or stereo volume control |
| 12 (RL-Right) | Right channel low terminal | Matches RL-Left for balanced channel performance and DC offset cancellation |
| 13 (RH-Right) | Right channel high terminal | Paired with RH-Left to maintain identical impedance and frequency response across channels |
| 14 (V−) | Negative analog supply | Bias for RL terminals; must be ≤ RL/RW/RH voltages to ensure safe operation |
Key Features
| Feature | Design Value |
|---|---|
| Zero-amplitude wiper switching | Delays wiper position change until next audio zero-crossing, eliminating audible pops during volume transitions |
| Dual log-taper resistor arrays | 32-step logarithmic response per channel matches human loudness perception for natural volume control |
| Simultaneous channel control | Single I²C command updates both left and right wipers identically, ensuring perfect stereo tracking |
| Volatile wiper registers | 5-bit WCR resets to mute (tap 0) at power-on, guaranteeing silent initialization without external reset logic |
| Low-noise analog architecture | 2µVrms input-referred noise and -102dB crosstalk enable use in preamplifier and DAC output stages |
Applications
| Stereo Amplifier Volume Control | DVD Player Audio Output Stage |
|---|---|
|
Use Scenario: Adjusting left/right channel gain in Class AB or Class D stereo amplifiers with analog inputs. IC Role / Device Role / Timing Role: Dual log-pot replaces mechanical pots; provides matched attenuation with zero-crossing wiper switching. Use Value: Eliminates mechanical wear, enables remote IR/microcontroller control, and prevents turn-on thump via power-up mute. |
Use Scenario: Setting playback volume and muting audio outputs in consumer DVD players before HDMI/SPDIF routing. IC Role / Device Role / Timing Role: Final analog gain stage before line drivers; handles 20Hz–20kHz full-bandwidth signals. Use Value: -96dB SNR and -95dB THD+N preserve dynamic range; -102dB crosstalk prevents L/R channel bleed in multi-zone outputs. |
| Set-Top Box Audio Interface | Portable Audio DAC Output Conditioning |
|
Use Scenario: Volume regulation and mute control for composite/RCA audio outputs in cable/satellite set-top boxes. IC Role / Device Role / Timing Role: Stereo attenuator between audio DAC and line driver; powered from ±3.3V rails. Use Value: ±2.7V analog supply compatibility allows direct connection to low-voltage DACs; 400kHz I²C enables fast UI response. |
Use Scenario: Gain adjustment and mute function for headphone amplifiers in portable media players using dual-supply op-amps. IC Role / Device Role / Timing Role: Post-DAC analog volume control with independent channel trimming for earpiece balance. Use Value: Channel-to-channel variation ±0.1dB ensures consistent left/right loudness; 100kHz −3dB bandwidth supports full audio spectrum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual audio log potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS1669U-050+ | Single-channel, 50kΩ linear taper, no zero-crossing switching, SPI interface | Lacks stereo synchronization and pop-free switching; suited for non-audio gain control only | Select only if linear taper and single-channel operation are acceptable and I²C is unavailable |
| MCP4641-103E/ST | Dual-channel, 10kΩ linear taper, I²C, no mute-on-power-up, no zero-crossing logic | Higher wiper noise, no automatic mute, unsuitable for high-SNR audio paths | Use only in cost-sensitive, non-critical audio applications where -92dB mute and -96dB SNR are not required |
Compared with DS1669U-050+ and MCP4641-103E/ST, the X9460KV14IZ uniquely delivers stereo-matched logarithmic taper, zero-crossing wiper switching, power-up mute, and -96dB SNR-making it the only option qualified for high-fidelity consumer audio volume control.
Availability
X9460KV14IZ is available at Aetrix Electronics and suitable for stereo amplifier design, DVD player audio subsystems, set-top box interface circuits, and portable media player output conditioning requiring stable component supply and long-term production continuity.
Supply support for X9460KV14IZ 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
Xicor, Inc. was a fabless semiconductor company specializing in nonvolatile memory and digitally controlled analog products before its acquisition by Intersil in 2001. Known for XDCP™ technology and precision analog ICs.
The X9460KV14IZ belongs to Xicor's XDCP™ (eXternally Digitally Controlled Potentiometer) family, engineered specifically for high-performance audio volume control with zero-click operation and stereo channel fidelity.
FAQ
What is the power-up behavior of the X9460KV14IZ?
The X9460KV14IZ powers up with both wipers at tap position 0 (mute), delivering -92dB attenuation on both channels. This behavior is hardwired and requires no external configuration or I²C initialization. The volatile Wiper Counter Registers reset automatically, ensuring silent startup in audio systems. No external reset signal is needed-the X9460KV14IZ achieves guaranteed mute-on-power-up by design.
Does the X9460KV14IZ support simultaneous left and right channel adjustment?
Yes, the X9460KV14IZ supports simultaneous left and right channel wiper adjustment via dedicated I²C commands (Write Both Wiper Counters, Inc/Dec Both Wiper Counters). These instructions ensure identical tap positions across both channels, maintaining precise stereo balance without software coordination. The X9460KV14IZ hardware guarantees atomic, synchronized updates-critical for avoiding transient channel imbalance during volume changes.
What analog supply voltage ranges does the X9460KV14IZ support?
The X9460KV14IZ supports dual analog supplies V+ and V− ranging from ±2.7V to ±5.5V, with a maximum differential of 12V. Digital supply VCC operates from 2.7V to 5.5V. All analog pin voltages (RH, RL, RW) must remain strictly between V− and V+ at all times. The X9460KV14IZ tolerates independent ramp rates for VCC and analog supplies, provided VCC ramp stays within 0.2–50 V/ms.
How does zero-amplitude wiper switching work in the X9460KV14IZ?
The X9460KV14IZ monitors voltage across RH–RL terminals and delays wiper switching until the instantaneous audio signal crosses zero volts. This eliminates pop/click artifacts caused by abrupt resistance changes mid-cycle. The feature is enabled/disabled via the ZD bit in the I²C command byte. When active, the X9460KV14IZ internally detects zero crossings and gates wiper updates-no host intervention or timing coordination is required.
What is the end-to-end resistance tolerance and temperature coefficient of the X9460KV14IZ?
The X9460KV14IZ has a nominal end-to-end resistance of 33kΩ per channel with a tolerance of ±20% (as indicated by the 'K' in the part number). Its temperature coefficient is -300 ppm/°C, measured across the industrial range (-40°C to +85°C). This drift specification ensures stable attenuation accuracy over temperature in consumer audio equipment. The X9460KV14IZ maintains channel-to-channel matching within ±0.1dB, critical for stereo imaging fidelity.
X9460KV14IZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Logarithmic
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- Number of Taps:
- 32
- Resistance (Ohms):
- 33k
- Interface:
- I2C
- Memory Type:
- Volatile
- Voltage - Supply:
- ±5V
- Features:
- Mute, Selectable Address, Zero-Cross Sense
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- -300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 100
X9460KV14IZ FAQ
1.How can I place an order for X9460KV14IZ through Aetrix?
Please submit a Request for Quotation (RFQ) for X9460KV14IZ 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 X9460KV14IZ reliable?
The price and inventory of X9460KV14IZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9460KV14IZ is usually 5 days.
3.What payment methods are accepted for X9460KV14IZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9460KV14IZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9460KV14IZ?
X9460KV14IZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9460KV14IZ 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 X9460KV14IZ?
For technical support, including X9460KV14IZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9460KV14IZ requirements.
6.How does Aetrix verify that X9460KV14IZ is sourced from the original manufacturer or authorized distributors?
All X9460KV14IZ 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 X9460KV14IZ meets industry standards.
7.What is the process for return or replacement of X9460KV14IZ?
All X9460KV14IZ units undergo pre-shipment inspection (PSI). If there is an issue with X9460KV14IZ, 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 X9460KV14IZ part is unused and in its original packaging.
Return procedure for X9460KV14IZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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