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Renesas EL5825ILZ
- Part No.:
- EL5825ILZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
EL5825ILZ.pdf
- Description:
- IC REG CONV TFT LCD 8OUT 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
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Product details
Overview
EL5825ILZ from Intersil is an 8-channel programmable reference voltage generator for TFT-LCD gamma correction, featuring 10-bit resolution per channel, ±0.1% output accuracy, rail-to-rail output swing (within 100 mV of rails), and serial interface control with daisy-chain capability via SDO. It operates from 4.5 V to 16.5 V analog supply and 3.3 V to 5 V digital supply, targeting LCD panel drive circuits requiring precise, reconfigurable voltage references.
For engineers reviewing the EL5825ILZ datasheet, EL5825ILZ pinout, EL5825ILZ application, or EL5825ILZ equivalent, this device is selected for high-accuracy, multi-channel reference generation in display timing systems where programmability, thermal stability over −40°C to +85°C, and low 8 mA quiescent current are critical design constraints.
Technical Context
The EL5825ILZ implements a digitally programmable analog reference architecture using internal 10-bit DACs per channel, with output voltage calculated as VOUT = VREFL + (data/1024) × (VREFH − VREFL). Its rail-to-rail output buffers support sourcing/sinking up to 30 mA per channel and settle within 4 ms program-to-out delay.
It uses a three-wire serial interface (SCLK, SDI, ENA) with MSB-first 16-bit framing and buffered SDO for cascading; clock source selection (internal 25 kHz oscillator or external) is controlled via bit B14, and channel addressing (A–H) occupies bits B13–B10. The OSC pin serves dual I/O function for synchronization across stacked devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 8 independent programmable analog outputs (OUTA–OUTH) |
| Resolution | 10-bit digital control per channel → 1024 discrete voltage steps |
| Accuracy | ±0.1% full-scale - ensures tight gamma curve fidelity across temperature |
| Supply Range | Analog VS: 4.5 V to 16.5 V; Digital VSD: 3.3 V to 5 V - supports wide-panel voltage architectures |
| Rail-to-Rail Swing | Within 100 mV of VS and GND - enables full-range gamma correction without headroom loss |
| Quiescent Current | 8 mA total analog supply current - minimizes power in always-on display bias rails |
| Operating Temp | −40°C to +85°C - qualified for industrial and automotive-grade display modules |
Pinout & Package
The EL5825ILZ is housed in a 24-pin QFN package (MDP0046) with exposed thermal pad, RoHS-compliant Pb-free finish, and JEDEC-standard footprint. Pin 1 is marked by notch or dot; thermal pad must be soldered to analog ground plane for thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OSC) | Oscillator I/O | Configurable clock source: internal 25 kHz oscillator output or external sync input for multi-chip timing alignment |
| 2 (VSD) | Digital Power | 3.3 V–5 V supply for logic interface - decoupled separately from analog VS |
| 4 (VS) | Analog Power | 4.5 V–16.5 V main analog supply - powers all output buffers and reference circuitry |
| 5 (REFH) | Analog Reference Input | High-end reference voltage (≤ VS); sets upper bound of programmable output range |
| 6 (REFL) | Analog Reference Input | Low-end reference voltage (≥ GND); sets lower bound of programmable output range |
| 7, 16 (GND) | Analog Ground | Dual ground pins reduce ground bounce; both must connect directly to low-impedance analog ground plane |
| 8 (CAP) | Reference Decoupling | Connects 0.1 µF ceramic capacitor to stabilize internal bandgap reference - critical for accuracy |
| 21 (ENA) | Serial Enable | Active-low chip select; defines start/end of 16-bit serial frame and triggers output update |
| 22 (SDI) | Serial Data Input | MSB-first 16-bit command stream: B15=0, B14=oscillator mode, B13–B10=channel address, B9–B0=data |
| 23 (SCLK) | Serial Clock Input | Up to 5 MHz clock; data latched on rising edge while ENA is low |
| 24 (SDO) | Serial Data Output | Buffered shift register output - enables daisy-chaining of multiple EL5825ILZ devices |
| 12–20 (OUTH–OUTA) | Analog Outputs | Eight rail-to-rail buffered voltage outputs; each independently programmable to 10-bit precision |
Key Features
| Feature | Design Value |
|---|---|
| 10-bit per-channel programming | Enables precise gamma curve tuning across 1024 voltage levels per output - essential for high-fidelity grayscale reproduction |
| Rail-to-rail output capability | Delivers output voltages within 100 mV of VS and GND - maximizes usable voltage range for asymmetric LCD VCOM architectures |
| Daisy-chain serial interface | SDO output allows cascading of multiple EL5825ILZ units with single microcontroller port - reduces GPIO count and simplifies layout for >8-channel systems |
| Internal 25 kHz oscillator | Eliminates need for external clock source in standalone applications; configurable via B14 bit for synchronized multi-device operation |
| −40°C to +85°C operation | Guaranteed performance across industrial temperature range - suitable for embedded displays in harsh environments |
Applications
| TFT-LCD Gamma Correction | LCD Panel Bias Voltage Generation |
|---|---|
Use Scenario: Generating 8 precisely stepped reference voltages to define the V-T (voltage-transmission) transfer curve of a color TFT-LCD panel. IC Role / Device Role / Timing Role: Programmable reference voltage generator providing gamma-corrected analog bias points for column driver ICs. Use Value: Enables dynamic gamma tuning via firmware without hardware change - supports multiple display modes (e.g., sRGB, Adobe RGB) from same panel. | Use Scenario: Supplying stable, matched reference voltages to LCD source drivers during active video scanning. IC Role / Device Role / Timing Role: High-accuracy, low-drift analog reference source synchronized to horizontal scan rate via OSC pin. Use Value: Reduces vertical banding and grayscale inversion artifacts by maintaining <±0.1% output stability across temperature and load variations. |
| Multi-Chip Gamma Stacking | Industrial HMI Display Calibration |
Use Scenario: Cascading two EL5825ILZ devices to generate 16 gamma voltages - 8 above and 8 below VCOM - for high-resolution panels. IC Role / Device Role / Timing Role: Master-slave configured reference generator using SDO→SDI daisy chain and shared ENA/SCLK for simultaneous update. Use Value: Achieves full 16-channel coverage with single SPI transaction - eliminates inter-frame timing skew between upper/lower gamma sets. | Use Scenario: Providing factory-calibrated reference voltages in ruggedized human-machine interface displays used in factory automation. IC Role / Device Role / Timing Role: Temperature-stable, programmable reference IC operating continuously in sealed enclosures at up to +85°C ambient. Use Value: Maintains display contrast consistency over 10+ year service life without recalibration - validated for industrial lifecycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable reference voltage generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX5487ETL+ | 8-channel, 10-bit, but only 2.7 V–5.5 V analog supply; no rail-to-rail output - max swing limited to VS − 0.8 V / 0.2 V | Restricted to low-voltage LCDs (<5.5 V); lacks daisy-chain SDO and internal oscillator | Select when system uses 3.3 V-only bias rails and requires smaller footprint (16-pin TQFN), not high-voltage gamma stacks. |
| AD5668BRUZ-1 | Octal 16-bit DAC with 0.05% INL; wider supply (2.7 V–5.5 V), but no rail-to-rail output and no integrated reference inputs (REFH/REFL) | Requires external precision references and level-shifting for high-voltage LCD use; higher resolution but less system-integrated | Choose for metrology-grade calibration where 16-bit monotonicity matters more than LCD-specific features like OSC sync or REFH/REFL scaling. |
Compared with MAX5487ETL+ and AD5668BRUZ-1, the EL5825ILZ uniquely integrates rail-to-rail output buffers, dual-reference input scaling (VREFH/VREFL), internal oscillator, and daisy-chain SDO - making it purpose-built for TFT-LCD gamma voltage generation rather than general-purpose DAC use.
Availability
EL5825ILZ is available at Aetrix Electronics and suitable for TFT-LCD panel manufacturing, industrial display module design, and embedded HMI development requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for EL5825ILZ 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 EL5825ILZ belongs to Intersil's TFT-LCD reference generator product line, engineered specifically to replace resistor-divider networks and discrete op-amp solutions in gamma voltage generation for flat-panel displays.
FAQ
What is the maximum output current per channel for the EL5825ILZ?
The EL5825ILZ supports a maximum continuous output current of 30 mA per channel, as specified in its Absolute Maximum Ratings. This rating applies under steady-state conditions with proper thermal management - including connection of the exposed thermal pad to a low-impedance analog ground plane. Exceeding this current may cause junction temperature to exceed 125°C, triggering thermal shutdown or permanent damage.
Does the EL5825ILZ require external passive components for stable operation?
Yes, the EL5825ILZ requires specific external components: a 0.1 µF ceramic capacitor must be placed directly at each of the VS, VREFH, VREFL, and CAP pins; additionally, a 4.7 µF tantalum capacitor is recommended at VS, VREFH, and VREFL. These ensure low-noise reference stability, prevent oscillation, and maintain ±0.1% accuracy across temperature and load. Omitting the CAP pin capacitor degrades bandgap reference performance.
Can multiple EL5825ILZ devices be synchronized for simultaneous output updates?
Yes, multiple EL5825ILZ devices can be synchronized using the OSC pin and shared ENA/SCLK signals. One device operates in internal oscillator mode (B14 = 0), driving its OSC pin to clock the others configured in external mode (B14 = 1). When ENA is pulsed low across all units, the 16-bit frames propagate via SDO→SDI daisy chain, and all addressed outputs update simultaneously upon ENA rising edge - ensuring frame-aligned gamma voltage transitions.
What is the role of the REFH and REFL pins on the EL5825ILZ?
The REFH and REFL pins define the full-scale voltage range for all eight EL5825ILZ outputs: VOUT = VREFL + (data/1024) × (VREFH − VREFL). They set the upper and lower bounds of the programmable output window and present ~34 kΩ input impedance. Both must remain within GND ≤ REFL ≤ VREFH ≤ VS to avoid clipping or undefined behavior - external resistive dividers or direct rail connections configure gamma slope and offset.
Is the EL5825ILZ pin-compatible with other variants in the EL5825 family?
Yes, the EL5825ILZ shares identical 24-pin QFN pinout (MDP0046) with EL5825IL, EL5825IL-T7, and EL5825IL-T13. All QFN variants have identical electrical characteristics and functionality; the suffix differences indicate tape-and-reel packaging (T7/T13) or RoHS compliance (Z). No PCB redesign is needed when migrating between these QFN versions - only sourcing and compliance documentation changes.
EL5825ILZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Converter, TFT LCD
- Voltage - Input:
- 4.5V ~ 16.5V
- Number of Outputs:
- 8
- Voltage - Output:
- 0.5V ~ 14.95V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (5x4)
EL5825ILZ FAQ
1.How can I place an order for EL5825ILZ through Aetrix?
Please submit a Request for Quotation (RFQ) for EL5825ILZ 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 EL5825ILZ reliable?
The price and inventory of EL5825ILZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL5825ILZ is usually 5 days.
3.What payment methods are accepted for EL5825ILZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL5825ILZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL5825ILZ?
EL5825ILZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL5825ILZ 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 EL5825ILZ?
For technical support, including EL5825ILZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL5825ILZ requirements.
6.How does Aetrix verify that EL5825ILZ is sourced from the original manufacturer or authorized distributors?
All EL5825ILZ 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 EL5825ILZ meets industry standards.
7.What is the process for return or replacement of EL5825ILZ?
All EL5825ILZ units undergo pre-shipment inspection (PSI). If there is an issue with EL5825ILZ, 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 EL5825ILZ part is unused and in its original packaging.
Return procedure for EL5825ILZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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