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Analog Devices Inc. AD8139ACPZ-REEL7
- Part No.:
- AD8139ACPZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
AD8139ACPZ-REEL7.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,351
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Product details
Overview
AD8139ACPZ-REEL7 from Analog Devices is a rail-to-rail, low-noise differential amplifier optimized as an ADC driver for 18-bit precision converters. It delivers 410 MHz small-signal bandwidth (G = 1), 800 V/µs slew rate, 2.25 nV/√Hz input voltage noise, and 98 dBc SFDR at 1 MHz - enabling high-fidelity signal conditioning in high-speed data acquisition systems.
For engineers reviewing the AD8139ACPZ-REEL7 datasheet, AD8139ACPZ-REEL7 pinout, AD8139ACPZ-REEL7 application, or AD8139ACPZ-REEL7 equivalent, key selection criteria include output balance error (−69 dB at 1 MHz), adjustable VOCM control, rail-to-rail output swing, and compatibility with ±5 V or single +5 V supplies in demanding mixed-signal front-ends.
Technical Context
The AD8139ACPZ-REEL7 employs an internal common-mode feedback loop that forces output common-mode voltage (VO,cm) to track the VOCM pin voltage, decoupling VO,cm control from input common-mode variations. Its H-bridge input stage enables high slew rate and low distortion while supporting both differential-to-differential and single-ended-to-differential configurations using four external resistors.
It operates on Analog Devices' second-generation XFCB process, achieving 2.25 nV/√Hz input voltage noise and 98 dBc SFDR at 1 MHz. The device maintains 80 dB dc CMRR and 69 dB output balance at 1 MHz - critical for rejecting even-order harmonics and preserving differential signal integrity in ADC interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal BW (G = 1) | 410 MHz - supports >200 MSPS sampling without gain-bandwidth trade-off penalties. |
| Slew Rate | 800 V/µs - ensures clean transient response for fast step inputs into ADCs. |
| Input Voltage Noise | 2.25 nV/√Hz - minimizes added noise floor when driving high-resolution ADCs. |
| SFDR @ 1 MHz | 98 dBc - preserves dynamic range for 16–18-bit converter performance. |
| Output Balance Error | −69 dB at 1 MHz - suppresses even-order distortion critical for differential signaling. |
| Supply Range | ±5 V or +5 V - enables flexible deployment in dual-rail and single-supply systems. |
| Quiescent Current | 25.5 mA max - balances speed and power in high-performance analog front-ends. |
Pinout & Package
The AD8139ACPZ-REEL7 is housed in an 8-lead LFCSP (3 mm × 3 mm) with exposed paddle (EP), rated for −40°C to +125°C operation. Thermal resistance θJA is 70°C/W on a 4-layer JEDEC board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting Input | Summing node for differential or inverting single-ended configurations; linear range extends to within ~1 V of rails. |
| 2 (VOCM) | Output Common-Mode Control | Sets output common-mode voltage (VO,cm); internal feedback forces VO,cm = VOCM over 515 MHz bandwidth. |
| 3 (V+) | Positive Supply | Accepts +4.5 V to +6 V (single supply) or ±5 V (dual supply); PSRR > 95 dB. |
| 4 (+OUT) | Positive Differential Output | Rail-to-rail output stage; delivers up to 100 mA per side into 1 kΩ load. |
| 5 (−OUT) | Negative Differential Output | Complementary to +OUT; balanced amplitude and 180° phase shift maintained by internal CM feedback. |
| 6 (V−) | Negative Supply | Required for dual-supply operation; accepts −4.5 V to −6 V; −PSRR > 95 dB. |
| 7 (NIC) | No Internal Connection | Unbonded; must be left floating or tied to ground per layout best practices. |
| 8 (+IN) | Noninverting Input | Summing node for noninverting configurations; matched impedance and noise performance to −IN. |
| EP | Exposed Paddle | Internally connected to ground; must be soldered to PCB ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Common-Mode | VOCM pin enables precise setting of output DC level independent of input common-mode - essential for interfacing with ADC reference domains. |
| Rail-to-Rail Output Swing | Swings to within 150 mV of rails (at RL = 10 kΩ), maximizing dynamic range for given supply. |
| Internal Common-Mode Feedback | Enforces output balance and suppresses even-order harmonics without requiring matched external components. |
| Low Distortion Architecture | H-bridge input stage + XFCB process yields 98 dBc SFDR at 1 MHz and <0.5 mV offset - critical for 18-bit ADC linearity. |
| Dual Supply Flexibility | Operates from ±5 V or single +5 V with VOCM = 2.5 V - simplifies system-level power architecture. |
Applications
| ADC Driver for 18-Bit SAR Converters | Single-Ended-to-Differential Conversion |
|---|---|
Use Scenario: Driving AD7674 (18-bit, 800 kSPS) in industrial data acquisition with ±5 V supplies and 0–5 V input range. IC Role / Device Role / Timing Role: Differential ADC driver providing gain, level shifting, and common-mode biasing to match ADC input requirements. Use Value: 98 dBc SFDR at 1 MHz and 69 dB output balance preserve ENOB > 17.5 bits; VOCM control aligns output common-mode to ADC reference midpoint. | Use Scenario: Converting single-ended sensor output (e.g., MEMS accelerometer) to differential signal for noise-immune transmission over PCB traces. IC Role / Device Role / Timing Role: Single-ended-to-differential converter with programmable output common-mode voltage and rail-to-rail swing. Use Value: Adjustable VOCM (1.0–3.8 V range) enables seamless interface to downstream differential receivers; 2.25 nV/√Hz noise avoids degrading sensor SNR. |
| Differential Cable Driver | Differential Filter Interface |
Use Scenario: Transmitting high-fidelity analog signals over 1–2 m coaxial or twisted-pair cables to remote digitization units. IC Role / Device Role / Timing Role: High-output-current differential driver (100 mA/side) with 410 MHz bandwidth and low harmonic distortion. Use Value: 800 V/µs slew rate prevents edge degradation; 72 dBc SFDR at 20 MHz ensures fidelity across full video/audio bandwidths. | Use Scenario: Buffering the output of a passive LC differential filter before feeding into a high-speed ADC. IC Role / Device Role / Timing Role: Low-impedance, high-Z input buffer maintaining filter Q and passband flatness while driving ADC input capacitance. Use Value: 600 kΩ differential input resistance minimizes filter loading; 0.1 dB flatness to 45 MHz preserves filter response shape. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential ADC driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4561IRGET | Lower noise (1.6 nV/√Hz), lower BW (1.8 GHz GBW but 320 MHz small-signal BW at G=2), no VOCM pin - uses internal fixed 1.25 V cm level. | Best suited for fixed-VOCM, ultra-low-noise applications where external level-shifting is acceptable. | Select THS4561IRGET when lowest possible input noise dominates and VOCM flexibility is not required. |
| LMH5401RTVT | Higher bandwidth (4.5 GHz GBW, 1.2 GHz small-signal BW), higher quiescent current (45 mA), no rail-to-rail output - min swing = ±3.5 V on ±5 V supplies. | Targeted at RF/IF signal chains (>100 MSPS) where speed outweighs power and output swing constraints. | Select LMH5401RTVT for >500 MSPS sampling rates where AD8139ACPZ-REEL7's 410 MHz BW is limiting. |
Compared with THS4561IRGET and LMH5401RTVT, the AD8139ACPZ-REEL7 uniquely combines VOCM adjustability, rail-to-rail output, and 410 MHz bandwidth at 25 mA - making it optimal for precision, medium-speed ADC interfaces where common-mode alignment and dynamic range are critical.
Availability
AD8139ACPZ-REEL7 is available at Aetrix Electronics and suitable for high-precision data acquisition, industrial sensor signal conditioning, and test equipment requiring stable component supply and long-term manufacturability.
Supply support for AD8139ACPZ-REEL7 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 AD8139ACPZ-REEL7 belongs to Analog Devices' precision high-speed amplifier product line, designed specifically for driving high-resolution ADCs and enabling robust differential signal paths in industrial, instrumentation, and medical imaging systems.
FAQ
What is the maximum operating temperature range for the AD8139ACPZ-REEL7?
The AD8139ACPZ-REEL7 is rated for continuous operation from −40°C to +125°C ambient temperature. This extended range is validated across all electrical specifications in the datasheet and supports deployment in harsh industrial and automotive under-hood environments where thermal stability is critical. The LFCSP package's exposed paddle enhances thermal dissipation to maintain junction temperature below 150°C under typical loads.
Does the AD8139ACPZ-REEL7 require external compensation capacitors for stability?
No, the AD8139ACPZ-REEL7 is internally compensated and stable with standard resistor-feedback networks (e.g., RF = RG = 200 Ω). However, when driving capacitive loads >10 pF, a small series resistor (10–50 Ω) per output is recommended to dampen peaking and ringing - as shown in Figure 58 of the datasheet. This does not constitute external compensation but rather load isolation.
Can the AD8139ACPZ-REEL7 operate from a single +5 V supply?
Yes, the AD8139ACPZ-REEL7 supports single +5 V operation with VOCM biased at 2.5 V. In this configuration, it delivers rail-to-rail output swing (to within 150 mV of rails), 385 MHz small-signal bandwidth, and 99 dBc SFDR at 1 MHz - as specified in Table 2 of the datasheet. Input common-mode range becomes 1 V to 4 V, requiring appropriate signal centering.
What is the function of Pin 7 (NIC) on the AD8139ACPZ-REEL7?
Pin 7 of the AD8139ACPZ-REEL7 is designated NIC (No Internal Connection) - it is unconnected to any internal circuitry and must be left floating or tied to ground per PCB layout guidelines. It is not a test pin or thermal pad; grounding it improves mechanical stability and EMI performance without affecting electrical operation.
How does the AD8139ACPZ-REEL7 achieve output balance without matched external resistors?
The AD8139ACPZ-REEL7 achieves output balance via an internal common-mode feedback loop that samples the midpoint of the differential outputs and forces VO,cm = VOCM. This architecture actively corrects amplitude and phase mismatches between +OUT and −OUT, delivering −69 dB balance error at 1 MHz regardless of external resistor matching - eliminating a major source of even-order distortion in differential signal chains.
AD8139ACPZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 800V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 410 MHz
- Current - Input Bias:
- 2.25 µA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 24.5mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LFCSP (3x3)
AD8139ACPZ-REEL7 FAQ
1.How can I place an order for AD8139ACPZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8139ACPZ-REEL7 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 AD8139ACPZ-REEL7 reliable?
The price and inventory of AD8139ACPZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8139ACPZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD8139ACPZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8139ACPZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8139ACPZ-REEL7?
AD8139ACPZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8139ACPZ-REEL7 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 AD8139ACPZ-REEL7?
For technical support, including AD8139ACPZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8139ACPZ-REEL7 requirements.
6.How does Aetrix verify that AD8139ACPZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD8139ACPZ-REEL7 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 AD8139ACPZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD8139ACPZ-REEL7?
All AD8139ACPZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8139ACPZ-REEL7, 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 AD8139ACPZ-REEL7 part is unused and in its original packaging.
Return procedure for AD8139ACPZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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