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Analog Devices Inc./Maxim Integrated MAX11508UUD+
- Part No.:
- MAX11508UUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Processing
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX11508UUD+.pdf
- Description:
- IC VIDEO FILTER 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,590
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Product details
Overview
MAX11508UUD+ from Maxim Integrated is a 3-channel, selectable-bandwidth video filter IC with integrated +6dB output buffers, designed for analog video signal conditioning in HD/PS/SD/BP modes. It delivers -3dB bandwidths of 9MHz (SD), 16MHz (PS), 33MHz (HD), and 60MHz (BP), supports AC/DC-coupled inputs and outputs, and operates from a single +5V supply. It is used in DVD players, HDTV front-ends, and STB receivers to replace discrete RC filters and coupling capacitors.
For engineers reviewing the MAX11508UUD+ datasheet, MAX11508UUD+ pinout, MAX11508UUD+ application, or MAX11508UUD+ equivalent, key selection criteria include its flat-passband response (vs. MAX11509's +0.8dB peaking), transparent input clamp compatibility with DAC outputs, shutdown current of 1µA, and TSSOP-14 package suitability for space-constrained video signal chains.
Technical Context
The MAX11508UUD+ implements three independent 6th-order lowpass filters with digitally selectable bandwidth via FSEL0/FSEL1 control pins, supporting four operating modes: SD (9MHz), PS (16MHz), HD (33MHz), and BP (60MHz). Each channel includes a +6dB gain buffer optimized for driving 150Ω video loads while maintaining blanking-level compliance (<1V after backmatch resistor).
Its transparent input clamp enables direct DC coupling from current-output DACs without external capacitors, while BIAS pin control activates internal bias networks for bipolar signals (Pb/Pr). Shutdown mode disables all channels and reduces quiescent current to 1µA, with outputs shorted to GND via 1.58kΩ resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth (SD) | 9MHz - preserves full NTSC/PAL luminance/chroma content without aliasing |
| -3dB Bandwidth (HD) | 33MHz - supports 720p/1080i baseband YPbPr signals up to 30MHz video bandwidth |
| Output Gain | +6dB - provides 2VP-P swing into 150Ω load, eliminating need for external amplification |
| Supply Voltage | +5V (4.75V–5.25V) - compatible with standard digital video system rails, no dual-supply required |
| Shutdown Current | 1µA typical - enables power gating during standby without external switch circuitry |
| ESD Protection | ±12kV HBM on outputs - protects against handling and board-level ESD events in consumer assembly |
| Operating Temp | 0°C to +85°C - qualified for upper commercial temperature range in STB and DVR enclosures |
Pinout & Package
MAX11508UUD+ is housed in a lead-free, RoHS-compliant 14-pin TSSOP package (package code U14+1), with 0.65mm pitch and exposed pad not connected internally. Thermal performance supports continuous operation at +85°C ambient when PCB copper area is used for heat spreading.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Power supply input | Single +5V rail for all three channels and logic; requires local 0.1µF + 1.0µF bypassing |
| 2 FSEL0 | Filter frequency select (LSB) | Combines with FSEL1 to set SD/PS/HD/BP mode per Table 1; CMOS-compatible logic input |
| 3 Y/G_IN | Channel 1 analog video input | Accepts Y (luma) or G (green) signal; features transparent clamp for AC/DC coupling |
| 4 Pb/B_IN | Channel 2 analog video input | Accepts Pb (blue difference) or B (blue); bias network enabled when BIAS = low |
| 5 Pr/R_IN | Channel 3 analog video input | Accepts Pr (red difference) or R (red); same bias control as Pb/B_IN |
| 6 BIAS | Bias network enable | Low = enables internal ~0.59V DC bias for bipolar Pb/Pr inputs; high = enables clamp |
| 7,14 N.C. | No connection | Not bonded; must be left floating or tied to GND for mechanical stability only |
| 8 GND | Analog/digital ground reference | Common return for all channels and logic; requires low-impedance PCB plane |
| 9 SHDN | Shutdown control input | Active-low; forces outputs to GND via 1.58kΩ and reduces ICC to 1µA |
| 10 Pr/R_OUT | Channel 3 buffered video output | +6dB gain, drives 150Ω load directly; blanking level <1V after 75Ω backmatch |
| 11 Pb/B_OUT | Channel 2 buffered video output | Same drive capability and DC offset (VOUT = 2×VIN + 0.55V) as Pr/R_OUT |
| 12 Y/G_OUT | Channel 1 buffered video output | Delivers full 2VP-P into 150Ω; offset ensures sync tip compliance with digital TV standards |
| 13 FSEL1 | Filter frequency select (MSB) | MSB of 2-bit filter mode selector; synchronous with FSEL0 for glitch-free mode switching |
Key Features
| Feature | Design Value |
|---|---|
| Flat passband response | MAX11508UUD+ provides no peaking-ideal for systems where DAC rolloff is already compensated elsewhere |
| Transparent input clamp | Enables direct DC coupling from current-output DACs, removing bulky input coupling capacitors |
| Selectably biased inputs | BIAS pin controls internal 0.59V bias on Pb/B_IN and Pr/R_IN for reliable AC-coupled bipolar video |
| +6dB output buffers | Drives 150Ω loads to 2VP-P with 550mV DC offset, meeting blanking-level specs without AC-coupling caps |
| 1µA shutdown mode | Reduces system standby power without requiring external power switches or sequencing |
Applications
| Cable STB Video Front-End | HDTV Component Input Processing |
|---|---|
|
Use Scenario: Conditioning YPbPr component video signals from tuner demodulators before ADC sampling or display processing. IC Role / Device Role / Timing Role: Analog anti-aliasing filter and level-shifting buffer for 720p/1080i baseband video paths. Use Value: 33MHz HD-mode bandwidth preserves chroma resolution; flat response avoids color distortion introduced by peaking. |
Use Scenario: Replacing passive RC filters in high-end DVD/Blu-ray player RGB/YUV output stages. IC Role / Device Role / Timing Role: Integrated 3-channel video reconstruction filter with gain and DC restoration. Use Value: Eliminates six external coupling capacitors and three op-amps, reducing BOM count and board area by >40%. |
| Digital Video Recorder Playback Path | Set-Top Box CVBS Composite Output |
|
Use Scenario: Filtering playback video from internal storage before HDMI or analog output conversion. IC Role / Device Role / Timing Role: SD-mode (9MHz) filter for NTSC/PAL playback with precise differential gain/phase control. Use Value: 0.7% differential gain and 0.7° differential phase ensure broadcast-grade color fidelity in recorded content. |
Use Scenario: Driving legacy CVBS outputs from MPEG decoder SoCs in low-cost STBs. IC Role / Device Role / Timing Role: Single-chip solution for composite video buffering, clamping, and impedance matching. Use Value: Transparent clamp maintains sync tip integrity across AC/DC-coupled sources; +6dB gain compensates for cable loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-channel video filter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX11509UUD+ | +0.8dB peaking at 5/8.5/20MHz in SD/PS/HD modes; identical pinout, package, and control interface | Better compensates for DAC high-frequency rolloff in systems lacking external equalization | Select MAX11509UUD+ only if system-level measurements confirm DAC rolloff requires peaking compensation |
| AD8175ARUZ | 3-channel, 300MHz fixed-gain video driver (no filtering); no FSEL/BIAS logic; higher supply current (36mA) | Suitable for bypass-only or post-filter amplification, not for selectable-bandwidth filtering | Use AD8175ARUZ when bandwidth >60MHz is required or when filtering is handled upstream |
Compared with MAX11509UUD+, the MAX11508UUD+ offers superior passband flatness for systems with well-compensated DACs; compared with AD8175ARUZ, it integrates selectable filtering and bias control but trades off maximum bandwidth for application-specific optimization.
Availability
MAX11508UUD+ is available at Aetrix Electronics and suitable for cable STB receivers, HDTV component inputs, and DVD player video output stages requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11508UUD+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX11508UUD+ belongs to Maxim's video signal conditioning product line, engineered specifically to replace discrete analog video filters in cost-sensitive, space-constrained consumer video equipment.
FAQ
What video standards does the MAX11508UUD+ support in SD mode?
The MAX11508UUD+ supports NTSC and PAL composite video standards in SD mode, delivering 9MHz (-3dB) bandwidth, 0.7% differential gain error, and 0.7° differential phase error-meeting broadcast-quality requirements for legacy analog video interfaces. Its transparent clamp ensures correct sync-tip restoration regardless of source coupling method.
Can the MAX11508UUD+ drive 75Ω video loads directly?
Yes, the MAX11508UUD+ output buffers are designed to drive 150Ω loads (75Ω backmatch + 75Ω termination), producing a full 2VP-P signal. When used with a standard 75Ω series backmatch resistor and 75Ω downstream termination, the MAX11508UUD+ meets SMPTE/ITU-R BT.601 timing and level specifications without additional amplification or AC-coupling.
How does the BIAS pin affect input signal handling on the MAX11508UUD+?
When BIAS = low, internal bias networks activate on Pb/B_IN and Pr/R_IN pins, applying ~0.59V DC offset to enable reliable AC-coupling of bipolar C/Pb/Pr signals. When BIAS = high, the transparent clamp engages instead-ideal for unipolar Y/G/R/B/CVBS signals. This dual-mode flexibility eliminates external bias components.
Is the MAX11508UUD+ pin-compatible with the MAX11509UUD+?
Yes, the MAX11508UUD+ and MAX11509UUD+ share identical pinout, package (14-pin TSSOP), supply voltage, control interface (FSEL0/FSEL1/SHDN/BIAS), and output drive capability. The only functional difference is the passband response: MAX11508UUD+ has flat response, while MAX11509UUD+ adds +0.8dB peaking to compensate DAC rolloff.
What is the purpose of the transparent clamp in the MAX11508UUD+ inputs?
The transparent clamp in the MAX11508UUD+ inputs automatically engages only when the input signal goes below ground (e.g., AC-coupled CVBS), setting the sync tip near 0V. During DC-coupled operation (e.g., from current-output DACs), the clamp remains inactive-preserving true DC accuracy and eliminating need for external clamping diodes or capacitors.
MAX11508UUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Buffers, Filters
- Applications:
- Consumer Video
- Standards:
- NTSC
- Control Interface:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
MAX11508UUD+ FAQ
1.How can I place an order for MAX11508UUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11508UUD+ 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 MAX11508UUD+ reliable?
The price and inventory of MAX11508UUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11508UUD+ is usually 5 days.
3.What payment methods are accepted for MAX11508UUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11508UUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11508UUD+?
MAX11508UUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11508UUD+ 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 MAX11508UUD+?
For technical support, including MAX11508UUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11508UUD+ requirements.
6.How does Aetrix verify that MAX11508UUD+ is sourced from the original manufacturer or authorized distributors?
All MAX11508UUD+ 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 MAX11508UUD+ meets industry standards.
7.What is the process for return or replacement of MAX11508UUD+?
All MAX11508UUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11508UUD+, 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 MAX11508UUD+ part is unused and in its original packaging.
Return procedure for MAX11508UUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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