My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX9674ETI+TG0E
- Part No.:
- MAX9674ETI+TG0E
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Processing
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX9674ETI+TG0E.pdf
- Description:
- PROGRAMMABLE GAMMA REFERENCE
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX9674ETI+TG0E from Maxim Integrated is a 16-channel, 10-bit programmable gamma reference IC with integrated VCOM driver and on-chip multiple-time programmable (MTP) memory for TFT LCD panel calibration. It delivers stable analog reference voltages across 16 gamma outputs (±200mA peak transient current, ≤1µs settling) and one high-current VCOM output (±600mA peak, ≤1µs settling), operating from 9V–20V analog and 2.7V–3.6V digital supplies. It is used in production-line automatic gamma and flicker calibration of high-resolution LCD displays.
For engineers reviewing the MAX9674ETI+TG0E datasheet, MAX9674ETI+TG0E pinout, MAX9674ETI+TG0E application, or MAX9674ETI+TG0E equivalent, key selection considerations include 16-channel gamma DAC resolution, VCOM amplifier current capability, I²C-programmable MTP storage for panel-specific tuning, thermal shutdown behavior (+165°C trip), and TQFN-EP package compatibility with high-density LCD timing controller layouts.
Technical Context
The MAX9674ETI+TG0E implements sixteen independent 10-bit DACs feeding buffered gamma outputs plus one dedicated 10-bit DAC driving a high-current operational amplifier for VCOM generation. All DACs share a common REF input and are calibrated to ±40mV total output error over 9V–20V AVDD and temperature (−40°C to +85°C). The VCOM amplifier features internal current limiting, 60MHz bandwidth, and 100V/µs slew rate to drive large capacitive LCD backplanes directly.
Programming occurs via I²C interface (up to 400kHz) with slave address configurable by A0 pin; register writes support volatile DAC loading or nonvolatile MTP programming (up to 300 cycles). MTP stores factory-initialized gamma/VCOM values (e.g., GMA1 = 0x3C2, VCOM = 0x193) and user-tuned calibration data, eliminating external EEPROM and enabling per-panel auto-calibration during manufacturing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gamma Channels | 16 independent analog outputs - enables full grayscale correction for high-resolution TFT panels requiring ≥16 gamma steps. |
| DAC Resolution | 10-bit (0–1023 codes) - provides 1024 discrete voltage levels per channel for fine-grained luminance control. |
| VCOM Output Current | ±600mA peak - sustains rapid charge/discharge of large LCD backplane capacitance without external buffering. |
| Gamma Output Current | ±200mA peak per channel - recovers voltage levels within 1µs during polarity switching or line transitions. |
| Analog Supply Range | 9V to 20V - supports wide-input industrial and automotive display power rails without external regulation. |
| Digital Supply Range | 2.7V to 3.6V - compatible with standard 3.3V logic systems and low-power microcontrollers. |
| I²C Interface Speed | Up to 400kHz - enables fast register writes during panel initialization or dynamic gamma adjustment. |
| MTP Endurance | 300 write cycles - sufficient for factory calibration and field firmware updates without wear-out risk. |
Pinout & Package
MAX9674ETI+TG0E is housed in a 28-pin Thin QFN (5mm × 5mm) with exposed pad (EP), RoHS-compliant and lead-free. The EP must be soldered to system ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 26, 27, 28 | N.C. | No internal connection - unused pins; must remain unconnected or grounded per layout best practice. |
| 2 | SCL | I²C serial clock input - synchronizes all register reads/writes; requires pull-up resistor ≥500Ω. |
| 3 | SDA | I²C bidirectional data line - open-drain operation; requires pull-up resistor ≥500Ω. |
| 4 | A0 | I²C device address bit - sets LSB of 7-bit slave address (E8h/E9h or EAh/EBh depending on A0 bias). |
| 5 | DVDD | Digital supply (2.7V–3.6V) - bypass with 0.1µF capacitor to GND for noise immunity. |
| 6 | AGND_AMP | Analog ground for VCOM amplifier - separate from main AGND to minimize coupling into sensitive feedback path. |
| 7 | VCOM | High-current VCOM output - drives LCD backplane directly; capable of ±600mA transient delivery. |
| 8 | VCOM_FB | VCOM amplifier feedback node - connects externally to VCOM output for unity-gain configuration. |
| 9 | AVDD_AMP | Separate analog supply for VCOM amplifier (9V–20V) - decoupled with 0.1µF cap to AGND_AMP. |
| 10, 21 | AVDD | Main analog supply (9V–20V) - powers gamma DACs and buffers; bypassed with 0.1µF to GND. |
| 11 | GND | Analog ground reference - ties to system ground plane; EP internally connected to GND. |
| 12–25, 28 | GMA1–GMA16 | 16 gamma DAC analog outputs - each sources/sinks ±200mA; GMA13–GMA16 active only on MAX9674. |
| 20 | REF | Common DAC reference input - sets full-scale output range; determines VOUT = (VREF × CODE)/1024. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MTP memory | Stores gamma and VCOM calibration values on-chip - eliminates external EEPROM, reduces BOM count, and enables panel-by-panel auto-calibration in production. |
| 16-channel gamma DAC | 10-bit resolution with ±40mV total output error - ensures consistent grayscale mapping across full brightness range for high-fidelity color reproduction. |
| VCOM amplifier with current limit | 600mA peak output with internal bond-wire protection - drives large-area TFT backplanes without external amplification or thermal derating. |
| Fast settling gamma outputs | ≤1µs settling time at ±200mA load - maintains voltage stability during rapid polarity inversion and horizontal line transitions. |
| Thermal shutdown with hysteresis | +165°C trip point with 15°C hysteresis - disables gamma outputs during overtemperature events while allowing safe recovery without system reset. |
| I²C register + MTP programming | Single interface configures both volatile DAC registers and nonvolatile MTP - simplifies firmware architecture and supports field updates. |
Applications
| Automotive Instrument Clusters | Industrial HMI Displays |
|---|---|
Use Scenario: High-brightness, wide-temperature TFT panels in dashboards requiring consistent gamma across -40°C to +85°C. IC Role / Device Role / Timing Role: Generates 16 precise gamma reference voltages and stabilized VCOM for LCD column drivers and backplane biasing. Use Value: Eliminates external resistor strings and discrete VCOM amps, reducing component count and improving long-term drift performance under thermal cycling. |
Use Scenario: Ruggedized medical or factory-floor displays needing flicker-free operation and factory-programmed grayscale accuracy. IC Role / Device Role / Timing Role: Provides programmable, MTP-stored gamma/VCOM values synchronized to panel-specific calibration data during burn-in testing. Use Value: Enables automated per-unit calibration in production, cutting test time and ensuring uniform luminance across batch-manufactured units. |
| Consumer Tablet Panels | Avionics Display Systems |
Use Scenario: High-resolution tablet LCDs with dynamic gamma adjustment for ambient light adaptation. IC Role / Device Role / Timing Role: Delivers fast-settling gamma references and high-current VCOM to support rapid frame-rate updates and touch-induced display changes. Use Value: 1µs settling and 400kHz I²C allow real-time gamma reconfiguration without visible artifacts during UI transitions. |
Use Scenario: Safety-critical cockpit displays requiring guaranteed VCOM stability and redundancy-aware calibration traceability. IC Role / Device Role / Timing Role: Supplies deterministic VCOM voltage with built-in current limiting and thermal shutdown to prevent catastrophic backplane failure. Use Value: On-chip MTP stores certified calibration data with write-cycle logging, supporting DO-254 traceability and lifecycle management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gamma reference and VCOM driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9673ETI+ | 14-channel gamma output (GMA1–GMA14), identical VCOM specs, same 28-TQFN package and pinout except GMA15/GMA16 N.C. | Suitable for mid-resolution panels where 14 gamma points meet grayscale fidelity requirements; lower channel count reduces routing complexity. | Select when panel design uses ≤14 gamma steps and cost optimization is prioritized without sacrificing VCOM performance or MTP functionality. |
| MAX9672ETI+ | 12-channel gamma output (GMA1–GMA12), identical VCOM specs and package; GMA13–GMA16 pins are N.C., reducing usable channels and pin utilization. | Targeted at entry-level displays with simpler gamma curves; retains full MTP, I²C, and thermal protection features in smaller footprint. | Choose for cost-sensitive consumer displays where 12-point gamma suffices and PCB space is constrained. |
Compared with MAX9672ETI+ and MAX9673ETI+, the MAX9674ETI+TG0E provides two additional gamma channels (GMA15/GMA16) for enhanced grayscale precision in high-end panels, while maintaining identical VCOM drive strength, MTP endurance, thermal shutdown behavior, and I²C interface compatibility - making it the highest-channel-count variant in the pin-compatible family.
Availability
MAX9674ETI+TG0E is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial HMI displays, and avionics display systems requiring stable component supply, long-term calibration retention, and high-current VCOM drive capability.
Supply support for MAX9674ETI+TG0E 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX9672/MAX9673/MAX9674 product line was engineered specifically for TFT LCD gamma correction and VCOM generation, integrating DACs, amplifiers, and nonvolatile memory to replace discrete resistor networks and external EEPROM in display timing controller subsystems.
FAQ
What is the maximum number of gamma channels supported by the MAX9674ETI+TG0E?
The MAX9674ETI+TG0E supports 16 gamma output channels (GMA1 through GMA16), as confirmed by its ordering information, functional diagram, and pin description table. This distinguishes it from the MAX9673ETI+ (14 channels) and MAX9672ETI+ (12 channels), all sharing the same 28-TQFN package but with progressively fewer active gamma pins.
Does the MAX9674ETI+TG0E require an external EEPROM for calibration storage?
No, the MAX9674ETI+TG0E includes integrated multiple-time programmable (MTP) memory that stores gamma and VCOM calibration values on-chip. This eliminates the need for external EEPROM, reduces bill-of-materials count, and enables panel-specific auto-calibration directly on the production line without additional components.
What is the peak output current capability of the VCOM driver in the MAX9674ETI+TG0E?
The VCOM output of the MAX9674ETI+TG0E delivers ±600mA peak transient current while settling within 1µs, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This high-current capability allows direct driving of large-capacitance TFT LCD backplanes without external amplification in most implementations.
How is the I²C slave address configured for the MAX9674ETI+TG0E?
The I²C slave address of the MAX9674ETI+TG0E is set using the A0 pin: tying A0 to GND yields write address 0xE8h and read address 0xE9h; tying A0 to DVDD yields write address 0xEAh and read address 0xEBh. This dual-address capability allows up to two MAX9674ETI+TG0E devices on the same I²C bus without conflict.
What thermal protection features does the MAX9674ETI+TG0E include?
The MAX9674ETI+TG0E incorporates thermal shutdown protection that disables all gamma outputs when die temperature reaches +165°C, with 15°C hysteresis to prevent oscillation. Recovery occurs automatically once temperature drops below +150°C. This safeguard prevents damage during sustained overload or poor heatsinking conditions.
MAX9674ETI+TG0E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Gamma Reference
- Applications:
- Video Display
- Standards:
- -
- Control Interface:
- I2C
- Voltage - Supply:
- 2.7V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 28-TQFN (5x5)
MAX9674ETI+TG0E FAQ
1.How can I place an order for MAX9674ETI+TG0E through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9674ETI+TG0E 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 MAX9674ETI+TG0E reliable?
The price and inventory of MAX9674ETI+TG0E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9674ETI+TG0E is usually 5 days.
3.What payment methods are accepted for MAX9674ETI+TG0E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9674ETI+TG0E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9674ETI+TG0E?
MAX9674ETI+TG0E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9674ETI+TG0E 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 MAX9674ETI+TG0E?
For technical support, including MAX9674ETI+TG0E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9674ETI+TG0E requirements.
6.How does Aetrix verify that MAX9674ETI+TG0E is sourced from the original manufacturer or authorized distributors?
All MAX9674ETI+TG0E 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 MAX9674ETI+TG0E meets industry standards.
7.What is the process for return or replacement of MAX9674ETI+TG0E?
All MAX9674ETI+TG0E units undergo pre-shipment inspection (PSI). If there is an issue with MAX9674ETI+TG0E, 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 MAX9674ETI+TG0E part is unused and in its original packaging.
Return procedure for MAX9674ETI+TG0E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9674ETI+TG0E Tags
-
HDMI2C1-6C1
STMicroelectronics
-
ADA4430-1YKSZ-R7
Analog Devices Inc.
-
LM1881MX/NOPB
Texas Instruments
-
SN75DP130SSRGZR
Texas Instruments
-
EQCO30T5.2
Microchip Technology
-
LMH1980MM/NOPB
Texas Instruments
-
EQCO30R5.D
Microchip Technology
-
SII9022ACNU
Lattice Semiconductor Corporation
-
SN65DP159RGZR
Texas Instruments
-
SN65DP159RSBR
Texas Instruments
-
SN65DP141RLJR
Texas Instruments
-
LMH0303SQ/NOPB
Texas Instruments
Tech Hub
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
