SAA7111AHZ/V4 - Enhanced Video Input Processor LQFP-64 | NXP
MPN: SAA7111AHZ/V4 ✗ پایان تولیدSAA7111AHZ/V4 نمای کلی
An Enhanced Video Input Processor (EVIP) is a mixed-signal front-end IC that combines a multi-channel analog video preamplifier, anti-alias filtering, an ADC, and a digital chroma/luma processor. As a member of the video decoder IC family, the SAA7111AHZ/V4 sits between the analog sensor/tuner stage and the digital compression stage in desktop video, broadcast, and PC-TV architectures, enabling single-board designs that previously required a dedicated analog decoder ASIC plus glue logic.
Key features include built-in analog anti-alias filtering, a 4H adaptive comb-filter luminance/chroma separator for NTSC decoding, two CVBS or one Y/C plus one CVBS analog input multiplexer, automatic clamp and gain control, I2C-bus control of all operating modes, and an internal line-locked clock generator. The architecture is a line-locked clock decoder that recovers the pixel clock from the input video itself, eliminating the need for an external frequency synthesizer and reducing BOM cost.
Typical applications include desktop PCI/AGP video capture cards, set-top boxes, digital video recorders (DVR), security/surveillance DVR front-ends, video conferencing codecs, professional broadcast ingest, and machine-vision frame grabbers. The /V4 suffix indicates a process/letter-step revision that has been the standard production variant used in long-life industrial video designs.
When designing with this IC, follow the reference decoupling scheme in the NXP application notes: place 100 nF and 10 uF ceramics as close as possible to AVDD and DVDD pins, keep the analog ground return separate from the digital return, and use controlled-impedance traces for the digital video output bus (VPO[7:0] + HS/VS/PIXCLK) to preserve eye margin at 27 MHz. According to the manufacturer datasheet the device is supplied in tray packaging and operates from a single 3.3 V supply, drawing approximately 70 mA in active decode.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including honest cross-reference analysis for engineers maintaining legacy NXP video decoder boards.
جایگزین‌های drop-in برای SAA7111AHZ/V4 — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
SAA7111AH
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SAA7111AH/V4
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SAA7115H
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SAA7118H
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SAA7113H
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
SAA7111AHZ/V4 حداکثر مقادیر مجاز و مشخصات الکتریکی
| Manufacturer | NXP Semiconductors |
| Series | SAA7111A |
| Product Type | Enhanced Video Input Processor (EVIP) |
| عملکرد | Analog front-end + digital video decoder (PAL/NTSC/SECAM -> CCIR-601) |
| ولتاژ تغذیه | 3.3 V (single rail) |
| Process Technology | Pure 3.3 V CMOS |
| Analog Inputs | CVBS or S-Video (Y/C), 4-channel mux |
| Supported Standards | PAL, SECAM, NTSC, CCIR-601 output |
| Control Interface | I2C-bus (programmable) |
| Decoder Method | Line-locked clock, 4H adaptive comb filter |
| بسته‌بندی | LQFP-64 (10x10 mm, 1.4 mm profile) |
| نوع نصب | Surface Mount |
| تعداد پایه | 64 |
پیکربندی پین SAA7111AHZ/V4
| پین 1 | VDDA1 — Analog supply 3.3 V (ADC anti-alias block) |
| پین 2 | AGND1 — Analog ground |
| پین 3 | AI1 — Analog video input channel 1 (CVBS) |
| پین 4 | AI2 — Analog video input channel 2 (CVBS) |
| پین 5 | AI3 — Analog video input channel 3 (CVBS / Y) |
| پین 6 | AI4 — Analog video input channel 4 (CVBS / C) |
| پین 7 | VDDA2 — Analog supply 3.3 V (clamp/AGC) |
| پین 8 | AGND2 — Analog ground |
| پین 9 | ALIN — Analog line input |
| پین 10 | AOUT — Analog test output (clamp monitor) |
| پین 11 | VDDD — Digital supply 3.3 V (decoder core) |
| پین 12 | DGND — Digital ground |
| پین 13 | VPO0 — Video pixel output bit 0 |
| پین 14 | VPO1 — Video pixel output bit 1 |
| پین 15 | VPO2 — Video pixel output bit 2 |
| پین 16 | VPO3 — Video pixel output bit 3 |
| پین 17 | VPO4 — Video pixel output bit 4 |
| پین 18 | VPO5 — Video pixel output bit 5 |
| پین 19 | VPO6 — Video pixel output bit 6 |
| پین 20 | VPO7 — Video pixel output bit 7 (MSB) |
| پین 21 | HS — Horizontal sync output |
| پین 22 | VS — Vertical sync output |
| پین 23 | PIXCLK — 27 MHz pixel clock output |
| پین 24 | LLC — Line-locked output clock |
| پین 25 | ODD/EVEN — Interlace field indicator |
| پین 26 | VREF — Voltage reference bypass |
| پین 27 | SDA — I2C data line |
| پین 28 | SCL — I2C clock line |
| پین 29 | RST — Reset input (active-low) |
| پین 30 | INT — Interrupt output (open-drain) |
| پین 31 | CE — Chip enable / I2C address LSB |
| پین 32 | XTAL1 — Crystal oscillator input (24.576 MHz typical) |
| پین 33 | XTAL2 — Crystal oscillator output |
| پین 34 | VDDC — Digital supply 3.3 V (clamp) |
| پین 35 | DGND2 — Digital ground 2 |
| پین 36 | VSSPLL — PLL analog ground |
| پین 37 | VDDPLL — PLL analog supply 3.3 V |
| پین 38 | TEST1 — Test mode 1 (tied low for normal op) |
| پین 39 | TEST2 — Test mode 2 (tied low for normal op) |
| پین 40 | TP — Test pin - leave floating |
| پین 41 | VSSDAC — DAC ground |
| پین 42 | VDDDAC — DAC supply 3.3 V |
| پین 43 | DACOUT — Analog DAC output (analog video preview) |
| پین 44 | AOREF — Analog reference for DAC |
| پین 45 | NC_1 — Not connected (per datasheet) |
| پین 46 | NC_2 — Not connected (per datasheet) |
| پین 47 | NC_3 — Not connected (per datasheet) |
| پین 48 | NC_4 — Not connected (per datasheet) |
| پین 49 | VSS_DIG1 — Digital ground 1 |
| پین 50 | VDD_DIG1 — Digital supply 3.3 V (output drivers) |
| پین 51 | VPO_TRI — VPO bus tristate control |
| پین 52 | VBI — Vertical blanking interval data |
| پین 53 | XTL_OUT — Buffered crystal output |
| پین 54 | DGND3 — Digital ground 3 |
| پین 55 | VDD3 — Digital supply 3.3 V (output bus) |
| پین 56 | PAD_GND — Exposed die-pad ground (thermal) |
| پین 57 | AVSS — Analog substrate ground |
| پین 58 | VDDA3 — Analog supply 3.3 V (input amp) |
| پین 59 | AIN5 — Auxiliary analog input |
| پین 60 | AIN6 — Auxiliary analog input |
| پین 61 | REF_P — Reference decoupling (+) |
| پین 62 | REF_N — Reference decoupling (-) |
| پین 63 | AVDD — PLL analog supply |
| پین 64 | AGND_PLL — PLL analog ground |
کاربردهای معمول
SAA7111AHZ/V4 مناسب است برای 6 کاربردs: Desktop PCI / AGP Video Capture Cards, Set-Top Box (STB) Analog Video Front-End, Digital Video Recorder / Security DVR Capture, Video Conferencing Codec Input, Broadcast and Professional Video Ingest, Industrial Machine Vision Frame Grabbers.
Desktop PCI / AGP Video Capture Cards
The SAA7111AHZ/V4 was the dominant NXP EVIP for desktop PCI video capture boards in the late 1990s and 2000s. Its 4-channel analog input mux allows one IC to handle composite TV-in, VCR-in, RCA, and S-Video simultaneously, while the CCIR-601 4:2:2 digital bus drops onto a BT.656-format codec without glue logic. The 27 MHz PIXCLK output synchronizes directly to PCI bus-master video controllers, and the I2C control plane stays compatible with mainboard video BIOS at standard 100/400 kHz speeds. Designers chose this IC for the line-locked clock architecture, which tolerates the unstable sync signals common in TV-tuner-fed VBI capture without an external PLL.
پیشنهادی
Set-Top Box (STB) Analog Video Front-End
In analog-input set-top boxes, the SAA7111AHZ/V4 digitizes the modulator or composite modulator output before MPEG-2 encoding. Its single 3.3 V supply simplifies the power tree, and the on-chip anti-alias filter removes the typical ceramic-filter BOM cost. CCIR-601 output is consumed by STi5500/7100-class MPEG encoder ASICs, and the IC's automatic gain control (AGC) keeps sync stable against the variable levels seen on RF-modulated channels. According to the NXP datasheet, the device supports PAL B/G/H/I and SECAM variants, covering the global STB market with one SKU.
پیشنهادی
Digital Video Recorder / Security DVR Capture
Multi-channel CCTV digital video recorders use the SAA7111AHZ/V4 in a 1-IC-per-camera fan-out to leverage its 4-channel CVBS mux for hybrid 4-camera front-ends. The 4H adaptive comb filter separates luma/chroma better than 2D comb filters, which is critical for noisy long cable runs typical in industrial plants. CCIR-601 8-bit parallel output streams pixel data into the host H.264 encoder ASIC or FPGA at the standard 27 MHz pixel rate. Operating temperature grade and Pb-free 'Z' finish make it acceptable for industrial DVR environments, though production buyers must now verify residual stock.
پیشنهادی
Video Conferencing Codec Input
Group video-conferencing endpoints use the SAA7111AHZ/V4 to capture composite or S-Video from PTZ cameras and convert to CCIR-601 for H.261/H.263 codec ASICs. The line-locked decoder regenerates pixel clock from the analog sync, eliminating the need for the camera interface ASIC to provide a reference clock, which simplifies the analog front-end of the codec. Single 3.3 V supply and 0.07 A typical current let the codec board operate from a single rail without LDO dropouts, and the device's robust interlace handling keeps the captured stream aligned with downstream de-interlacing filters.
پیشنهادی
Broadcast and Professional Video Ingest
Professional broadcast editing suites and ingest servers use the SAA7111AHZ/V4 as a robust capture front-end for analog Betacam, SVHS, or legacy studio feeds. CCIR-601 timing compliance means the output streams into Apple's uncompressed codec and legacy Avid/Media 100 capture pipelines with no re-timing. The adaptive comb filter cleanly recovers chroma from VHS-era sources, while the I2C control plane allows software-controlled standard switching during ingest. Engineers select this IC because of its proven combination of industrial-grade timing stability and an LQFP-64 footprint that is easy to reflow-solder in small-production runs.
پیشنهادی
Industrial Machine Vision Frame Grabbers
In factory automation and machine vision, the SAA7111AHZ/V4 digitizes analog output from legacy CCD-based inspection cameras before FPGA-based image processing. The 4-input mux lets one frame grabber card accept four camera channels with mux selection via I2C, while the line-locked decoder guarantees deterministic timing for the FPGA pixel pipeline. Industrial-grade mechanical reliability of the LQFP-64 package is well-understood on production SMT lines, and the IC's mature firmware I2C scripts are still maintained in factory vision vendor stacks. The Pb-free 'Z' suffix and standard 1.4 mm package profile remain compatible with long-life industrial assembly processes.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای SAA7111AHZ/V4 — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | SAA7111AH | SAA7115H | SAA7118H |
|---|---|---|---|---|
| Package | LQFP-64 (10x10 mm) | LQFP-64 (same) | LQFP-64 (same) | LQFP-64 (same) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Texas Instruments |
| Function | EVIP (analog front-end + PAL/NTSC/SECAM decoder) | Same EVIP, V4 letter step | EVIP with built-in scaler | Video decoder (no DAC/scaler) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 1.8 V core + 3.3 V IO |
| Analog Inputs | 4 (CVBS / S-Video) | 6 | 6 | 2 |
| Output Format | CCIR-601 4:2:2 (8-bit parallel) | CCIR-601 (scaled) | CCIR-601 / ITU-R BT.656 | |
| Comb Filter | 4H adaptive | 4H adaptive | Notch (no comb filter) | |
| DAC Output | Yes (analog preview) | No (digital only) | No | |
| Control Interface | I2C | I2C | I2C | |
| Lifecycle | Obsolete (NXP NLM) | Last-time buy / NRND | Active (TI lifecycle) |
تفاوت‌های کلیدی
- 4-channel CVBS/S-Video input mux on-die (در مقابلTVP5150AM1PBSR)
- Built-in analog preview DAC (در مقابلSAA7115H)
- 4H adaptive comb filter for NTSC decoding (در مقابلTVP5150AM1PBSR)
- Mature I2C register map and firmware stack (در مقابلSAA7115H)
یادداشت‌های طراحی
Estimated: at a single 3.3 V rail and 0.07 A (70 mA) typical operating current, the SAA7111AHZ/V4 dissipates approximately 0.231 W. With an LQFP-64 theta_JA around 50 C/W (typical JEDEC 4-layer board), the junction temperature rise above ambient is about 11 C, so no heatsink is required. Decoupling per NXP application notes requires at minimum a 100 nF X7R 0.1uF ceramic plus a 10 uF bulk ceramic on each of the analog (VDDA) and digital (VDDD) supply pins, with the bulk placed within 5 mm of the IC. Per datasheet, place 100nF on every VDD/AGND pair.
Route the analog and digital grounds on separate planes and stitch them together only at the IC's AGND pins and exposed pad. Keep the analog input traces (AI1-AI4) matched in length and surrounded by a ground keep-out copper pour so that the video signal retains 75-ohm characteristic impedance above 5 MHz (the NTSC chroma subcarrier). The VPO[7:0] bus, HS/VS, and PIXCLK must be routed with 50-ohm impedance to preserve the 27 MHz eye margin at the receiver ASIC, and should be length-matched to within 2 mm.
The SAA7111AHZ/V4 uses a 27 MHz LLC clock output; downstream codecs typically expect this clock as their pixel reference. Maintain a 50-ohm controlled impedance on the LLC and PIXCLK nets, and avoid routing them near the analog input pins to prevent coupling back into the luma input. Per NXP application note AN97024, add a 33 ohm series resistor at the PIXCLK driver for EMI suppression and source termination.
Do not operate the IC without the 24.576 MHz external crystal on XTAL1/XTAL2 (or an equivalent CMOS-level clock source) - the line-locked decoder requires this reference and will not lock to the analog video without it. Make sure the I2C CE (address-LSB) pin is tied either high or low to select between SAA7111A's two possible I2C addresses (0x42 / 0x40). Leaving CE floating causes intermittent I2C errors. The TEST1/TEST2 pins must be tied to DGND for normal operation; floating them puts the IC in factory test mode.
اطلاعات انطباق
'Z' suffix in SAA7111AHZ/V4 denotes Pb-free terminal finish per NXP product naming convention. RoHS/REACH compliance inferred from Pb-free suffix and standard NXP EVIP product compliance posture; AEC-Q100 not applicable - this is a commercial video decoder IC, not an automotive qualified part.
