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Analog Devices Inc. AD8129ARMZ
- Part No.:
- AD8129ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8129ARMZ.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,774
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Product details
Overview
AD8129ARMZ from Analog Devices is a high-speed, low-noise differential-to-single-ended receiver amplifier optimized for long-cable analog video and high-speed data transmission over twisted-pair. It delivers 200 MHz −3 dB bandwidth (VOUT ≤ 0.3 V p-p), 1060 V/μs slew rate at G = +10, and 4.5 nV/√Hz input voltage noise, enabling robust signal recovery in noisy industrial or broadcast video systems.
For engineers reviewing the AD8129ARMZ datasheet, AD8129ARMZ pinout, AD8129ARMZ application, or AD8129ARMZ equivalent, this page provides verified specifications, validated pin functions, real-world use cases in differential line reception and level shifting, and confirmed alternative options for gain ≥10, high-CMRR, low-noise receiver designs.
Technical Context
The AD8129ARMZ employs a fully differential input stage with 1 MΩ differential input impedance and ±10.5 V common-mode input range (±12 V supply), supporting ground potential differences across cable runs. Its user-adjustable gain (set by external RF/RG ratio) maintains stability at G ≥ +10 without compensation components.
It features active power-down (PD pin) with sub-μs enable time and 0.65 mA quiescent current in shutdown, while delivering 70 dB CMRR at 10 MHz - critical for rejecting EMI and crosstalk on unshielded twisted-pair. The architecture avoids transformer coupling, reducing BOM cost and size versus legacy solutions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 200 MHz (VOUT ≤ 0.3 V p-p, ±5 V supply): supports HD video baseband and >150 Mbps digital signaling. |
| Slew Rate | 1060 V/μs (G = +10, ±5 V): enables clean 2 V p-p output transitions at 5+ MHz without slewing distortion. |
| Input Voltage Noise | 4.5 nV/√Hz (f ≥ 10 kHz): preserves SNR in low-amplitude, high-gain receiver stages. |
| CMRR | 94 dB min (dc–100 kHz), 70 dB @ 10 MHz: rejects common-mode interference from motors, switching supplies, or adjacent cables. |
| Power Supply Range | ±2.25 V to ±12.6 V: allows operation from single +5 V (with rail-splitting) up to ±12 V for maximum dynamic range. |
| Differential Input Range | ±0.5 V (linear operation): defines safe input swing before clipping in G = +10 configuration. |
| Quiescent Current | 10.8 mA (±5 V): balances speed and power for continuous-operation video receivers. |
Pinout & Package
AD8129ARMZ is housed in an 8-lead MSOP package (3 mm × 3 mm, 0.65 mm pitch), thermally enhanced for high-speed operation with θJA = 142°C/W on a 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+IN) | Differential input noninverting | High-impedance node (1 MΩ); accepts common-mode voltages up to ±10.5 V with ±12 V supply. |
| 2 (−IN) | Differential input inverting | Matched to +IN; forms precision differential pair with 94 dB dc CMRR. |
| 3 (−VS) | Negative supply rail | Connects to system ground or negative rail; supports single-supply operation when tied to GND. |
| 4 (+VS) | Positive supply rail | Accepts +4.5 V to +12.6 V (single) or ±2.25 V to ±12.6 V (dual); bypassing required per layout guidelines. |
| 5 (PD) | Power-down control | Active-low TTL/CMOS-compatible input; pulls supply current to 0.68 mA when < VIL (≤ +VS − 2.5 V). |
| 6 (OUT) | Single-ended output | Drives 150 Ω loads to ±3.6 V; 40 mA short-circuit current rating protects against transient faults. |
| 7 (REF) | Output reference level | DC bias point for output swing; typically tied to mid-supply (e.g., 2.5 V for +5 V system) for rail-to-rail compatibility. |
| 8 (FB) | Feedback connection | Connects to external resistor network (e.g., RF to OUT, RG to REF) to set closed-loop gain G = 1 + RF/RG. |
Key Features
| Feature | Design Value |
|---|---|
| User-adjustable gain | G = +10 to +20 achieved with two external resistors (RF/RG), eliminating need for gain-setting ICs or complex feedback networks. |
| High-frequency CMRR | 70 dB maintained at 10 MHz ensures reliable rejection of switching noise and RFI in industrial environments with long cable runs. |
| Low-noise architecture | 4.5 nV/√Hz input voltage noise enables reception of weak signals after 100+ m twisted-pair attenuation without cascaded amplification. |
| Wide common-mode input range | ±10.5 V (±12 V supply) accommodates ground offsets between transmitter and receiver without isolation transformers. |
| Fast power-down | 0.5 μs enable time and 0.68 mA shutdown current support dynamic power gating in battery-powered or thermal-constrained systems. |
Applications
| High-Speed Differential Line Receiver | Differential-to-Single-Ended Conversion |
|---|---|
Use Scenario: Receiving analog RGB or YPbPr video signals transmitted over 100 m unshielded twisted-pair in broadcast production switchers. IC Role / Device Role / Timing Role: Differential receiver amplifier converting balanced cable signals to single-ended outputs compatible with downstream ADCs or video processors. Use Value: 200 MHz bandwidth and 70 dB CMRR at 10 MHz suppress crosstalk and EMI, eliminating need for expensive shielded cables or isolating transformers. |
Use Scenario: Converting LVDS or RS-422 serial data streams to single-ended logic levels for FPGA or microcontroller input in industrial PLC backplanes. IC Role / Device Role / Timing Role: High-speed differential receiver translating differential logic into referenced CMOS/TTL-compatible voltage swings. Use Value: 1060 V/μs slew rate and 20 ns settling time preserve signal integrity for >150 Mbps data rates without timing jitter accumulation. |
| High-Speed Instrumentation Amplifier | Level Shifting for Ground-Referenced Systems |
Use Scenario: Measuring small-signal sensor outputs (e.g., strain gauge bridges) in motor drive cabinets with high dv/dt noise. IC Role / Device Role / Timing Role: Precision instrumentation amplifier leveraging high CMRR and low noise to extract µV-level signals from noisy 48 V DC bus environments. Use Value: 94 dB min dc CMRR and 4.5 nV/√Hz noise floor enable 16-bit effective resolution without additional filtering or shielding. |
Use Scenario: Interfacing a ±10 V analog sensor output to a +3.3 V microcontroller ADC with separate ground domains. IC Role / Device Role / Timing Role: Level translator and common-mode shifter, accepting wide input common-mode range and outputting referenced single-ended voltage. Use Value: ±10.5 V input common-mode range (±12 V supply) eliminates level-shifting op amps or isolated amplifiers, reducing component count and latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential receiver amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8130ARMZ | Lower gain stability (G = +1 stable), higher input noise (12.5 nV/√Hz), wider bandwidth (270 MHz @ G = +1). | Better suited for unity-gain video distribution or low-attenuation links where noise is less critical than bandwidth. | Select AD8130ARMZ when gain ≤ +2 is required and input-referred noise budget allows >2× increase over AD8129ARMZ. |
| THS4561IRGET | Higher slew rate (1600 V/μs), lower noise (2.3 nV/√Hz), but narrower CMRR (65 dB @ 10 MHz) and no integrated power-down. | Preferred for ultra-low-noise, high-slew applications like medical imaging front-ends where CMRR >70 dB at 10 MHz is not mandatory. | Choose THS4561IRGET only if 2.3 nV/√Hz noise and 1600 V/μs slew are prioritized over guaranteed 70 dB CMRR at 10 MHz and PD functionality. |
Compared with AD8130ARMZ and THS4561IRGET, AD8129ARMZ uniquely balances low noise (4.5 nV/√Hz), high CMRR (70 dB @ 10 MHz), and integrated power-down - making it optimal for long-cable, gain ≥+10, noise-sensitive industrial video and data links where reliability and EMI immunity are non-negotiable.
Availability
AD8129ARMZ is available at Aetrix Electronics and suitable for high-speed video transmission, industrial instrumentation, and differential data interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for AD8129ARMZ 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The AD8129ARMZ belongs to Analog Devices' high-speed differential receiver amplifier product line, designed specifically for robust signal recovery in twisted-pair video, instrumentation, and data communication systems operating under severe EMI and ground-potential-difference conditions.
FAQ
What is the maximum recommended supply voltage for AD8129ARMZ?
The AD8129ARMZ has an absolute maximum total supply voltage rating of 26.4 V. For reliable operation, Analog Devices specifies a functional operating range of ±2.25 V to ±12.6 V (i.e., 4.5 V to 25.2 V total). Exceeding ±12.6 V risks permanent damage per the Absolute Maximum Ratings table. Always observe derating guidelines for thermal management at high supply voltages.
Can AD8129ARMZ operate from a single +5 V supply?
Yes, AD8129ARMZ supports single-supply operation: tie −VS to ground and +VS to +5 V. In this configuration, the input common-mode range is 1.25 V to 3.7 V (per 5 V specs), and REF should be biased at 2.5 V to center the output swing. Performance metrics including bandwidth (160–185 MHz) and slew rate (810–930 V/μs) remain valid under these conditions.
What gain configurations are stable for AD8129ARMZ?
AD8129ARMZ is internally compensated for stable operation at gains of +10 and higher. The datasheet explicitly states it is "intended for applications over very long cables, where signal attenuation is significant" and confirms stability at G = +10, +20, and beyond. Gain < +10 (e.g., G = +2 or +1) is not guaranteed stable and may require external compensation per Application Note AN-639.
How does the power-down (PD) pin function on AD8129ARMZ?
The PD pin is an active-low TTL/CMOS-compatible control input. When pulled ≤ +VS − 2.5 V (VIL), AD8129ARMZ enters low-power mode with 0.68 mA quiescent current and high-impedance output. Enable time is 0.5 μs. The pin exhibits dual-input resistance: ~12.5 kΩ when PD ≤ +VS − 3 V, and ~100 kΩ when PD ≥ +VS − 2 V - enabling direct microcontroller GPIO drive without external pull-up/down resistors.
Is AD8129ARMZ pin-compatible with AD8130ARMZ?
Yes, AD8129ARMZ and AD8130ARMZ share identical 8-lead MSOP (ARMZ) and SOIC packages and pinout: +IN, −IN, −VS, +VS, PD, OUT, REF, FB. However, they are not functionally interchangeable without circuit review - AD8129ARMZ is optimized for G ≥ +10 and low noise, while AD8130ARMZ is unity-gain stable with higher bandwidth at G = +1. Layout reuse is possible, but gain-setting and bypassing must be re-validated.
AD8129ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1070V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 200 MHz
- Current - Input Bias:
- 500 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 13mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 25.2 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
AD8129ARMZ FAQ
1.How can I place an order for AD8129ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8129ARMZ 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 AD8129ARMZ reliable?
The price and inventory of AD8129ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8129ARMZ is usually 5 days.
3.What payment methods are accepted for AD8129ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8129ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8129ARMZ?
AD8129ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8129ARMZ 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 AD8129ARMZ?
For technical support, including AD8129ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8129ARMZ requirements.
6.How does Aetrix verify that AD8129ARMZ is sourced from the original manufacturer or authorized distributors?
All AD8129ARMZ 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 AD8129ARMZ meets industry standards.
7.What is the process for return or replacement of AD8129ARMZ?
All AD8129ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8129ARMZ, 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 AD8129ARMZ part is unused and in its original packaging.
Return procedure for AD8129ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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