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Analog Devices Inc. AD8330ACPZ-R7
- Part No.:
- AD8330ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD8330ACPZ-R7.pdf
- Description:
- IC VARIABLE GAIN 1 CIRC 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:835
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Product details
Overview
AD8330ACPZ-R7 from Analog Devices is a wideband, fully differential variable gain amplifier (VGA) operating from DC to 150 MHz with linear-in-dB and linear-in-magnitude gain control modes, 0 dB to 50 dB gain range (30 mV/dB), 5 nV/√Hz input-referred noise at max gain, and rail-to-rail differential outputs-used in pre-ADC signal conditioning, AGC loops, and 75 Ω cable driving applications.
For engineers reviewing the AD8330ACPZ-R7 datasheet, AD8330ACPZ-R7 pinout, AD8330ACPZ-R7 application, or AD8330ACPZ-R7 equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options for high-frequency analog signal chain design.
Technical Context
The AD8330ACPZ-R7 implements a translinear VGA core on a proprietary SiO-complementary bipolar process, enabling constant 150 MHz bandwidth across its full 0–50 dB gain range and supporting dual gain interfaces: VDBS (linear-in-dB, ±0.1 dB linearity) and VMAG (linear-in-magnitude, ×0.03 to ×10 scaling). Its differential architecture features independent common-mode control (CNTR), offset compensation (OFST), and two power-down states (full shutdown & hibernate).
Gain is set by voltage-controlled current steering in the core cell, where ID is exponentially modulated via VDBS/CMGN and IN is scaled via VMAG. Input resistance is 1 kΩ differential, output impedance is 150 Ω differential, and distortion remains ≤−62 dBc HD2 at 10 MHz with 1 Vp-p output into 1 kΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 150 MHz small-signal −3 dB point, invariant across all gain settings-enables stable frequency response in wideband AGC and instrumentation. |
| Gain Range (dB mode) | 0 dB to 50 dB over 0 V to 1.5 V on VDBS (30 mV/dB slope); ±0.1 dB linearity ensures accurate logarithmic gain law conformance. |
| Input Noise Density | 5 nV/√Hz typical at maximum gain-supports low-level signal amplification before ADC without degrading SNR. |
| Differential Output Swing | ±2 V (4 Vp-p) at VMAG = 0.5 V; extends to ±4.5 V (9 Vp-p) when VMAG ≥ 2 V-drives ADC inputs or 75 Ω loads directly. |
| Distortion (HD2) | ≤−62 dBc at 10 MHz, 1 Vp-p output into 1 kΩ-meets requirements for medium-fidelity RF/IF signal paths. |
| Supply Current | 20 mA typical at 5 V supply-optimized for low-power portable and battery-assisted instrumentation. |
| Operating Temp | −40°C to +85°C-qualified for industrial and automotive under-hood signal conditioning environments. |
Pinout & Package
AD8330ACPZ-R7 is housed in a 16-lead, 3 mm × 3 mm LFCSP package with exposed thermal pad (EPAD), rated for −40°C to +85°C operation. The EPAD must be soldered to PCB ground plane for thermal reliability and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VPSI | Positive supply for input stages | Separate 2.7–6 V rail isolates input bias from output switching noise; decoupling required near pin. |
| INHI / INLO | Differential signal inputs (±) | 1 kΩ differential input resistance; accepts ±2 V peak differential or single-ended drive with CM shift. |
| MODE | Gain slope direction control | High = gain increases with VDBS; low = gain decreases-enables inverted AGC behavior without external logic. |
| VDBS | Linear-in-dB gain control voltage | 0–1.5 V sets 0–50 dB gain (30 mV/dB); 100 nA bias current allows high-impedance DAC or filter interface. |
| VMAG | Linear-in-magnitude gain scaling | 0–5 V adjusts nominal gain multiplier from ×0.03 to ×10; default 0.5 V yields ×4.0 gain scaling factor. |
| OPHI / OPLO | Differential signal outputs (±) | 150 Ω differential output impedance; rail-to-rail swing referenced to CNTR; supports direct ADC coupling. |
| CNTR | Common-mode output voltage control | 0.5–4.5 V range sets output common-mode level-matches ADC reference or external termination networks. |
| ENBL | Power enable (active high) | Logic-high enables full operation; 1.3–1.7 V enters hibernate (outputs held at CNTR); <0.5 V shuts down to 100 µA. |
| OFST | Offset compensation control | Open = auto-offset correction enabled (1 mV rms residual); grounded = disabled (±40 mV offset)-configurable per system needs. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential signal path | Eliminates even-order distortion and common-mode interference; supports true balanced ADC interfacing without external baluns. |
| Constant bandwidth across gain | 150 MHz −3 dB bandwidth maintained from 0 dB to 50 dB gain-avoids frequency-dependent gain error in wideband receivers. |
| Dual independent gain interfaces | VDBS (linear-in-dB) and VMAG (linear-in-magnitude) allow simultaneous coarse/fine gain control or dynamic range repositioning up to ±30 dB. |
| Configurable offset compensation | OFST pin open enables automatic DC offset nulling (1 mV rms); grounding disables it-preserves DC accuracy or avoids loop instability. |
| Two-stage power-down | ENBL supports hibernate mode (1.5 mA, outputs held at CNTR) and full shutdown (100 µA)-reduces idle power in burst-mode systems. |
Applications
| Pre-ADC Signal Conditioning | 75 Ω Cable Driving |
|---|---|
|
Use Scenario: Amplifying low-level sensor or RF IF signals prior to sampling by a 12–16-bit ADC in medical ultrasound or spectrum analyzers. IC Role / Device Role / Timing Role: Variable gain amplifier providing programmable signal scaling to maximize ADC dynamic range utilization while maintaining SNR. Use Value: 5 nV/√Hz input noise and ≤−62 dBc HD2 preserve signal fidelity; 150 MHz flat bandwidth prevents aliasing-induced gain error. |
Use Scenario: Driving long coaxial cables (e.g., video, test equipment interconnects) requiring precise 75 Ω source termination and amplitude control. IC Role / Device Role / Timing Role: Differential line driver with adjustable output amplitude and common-mode level matching to downstream receiver inputs. Use Value: 150 Ω differential output impedance matches 75 Ω single-ended lines via simple resistive network; ±4.5 V p-p swing drives long cables without clipping. |
| AGC Amplifier | Wide-Range True RMS Voltmeter |
|
Use Scenario: Closed-loop automatic gain control in optical receivers or RF front-ends where signal amplitude varies over >60 dB. IC Role / Device Role / Timing Role: Core VGA element whose gain is dynamically adjusted by feedback from an RMS detector or envelope comparator. Use Value: 50 dB linear-in-dB range with 250 ns gain settling enables fast AGC response; constant bandwidth ensures phase-stable loop behavior. |
Use Scenario: Precision AC voltmeter measuring signals from 10 mVrms to 1 Vrms across DC–100 MHz with true RMS conversion. IC Role / Device Role / Timing Role: Programmable front-end amplifier scaling input to match RMS converter full-scale range while minimizing noise contribution. Use Value: Adjustable gain (0–50 dB) and low 5 nV/√Hz noise enable high-resolution RMS measurement of weak signals without preamplifier cascading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar variable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8370ACPZ-R7 | Higher bandwidth (750 MHz), higher noise (8.5 nV/√Hz), no VMAG interface-only linear-in-dB control. | Better suited for RF/IF gain control above 200 MHz; lacks fine amplitude scaling for precision instrumentation. | Select AD8370ACPZ-R7 only when bandwidth >300 MHz is mandatory and noise budget allows ≥8 nV/√Hz. |
| LMH6401IRGTR | DC–1.9 GHz bandwidth, digital SPI gain control (not analog voltage), higher supply current (75 mA), no offset compensation. | Targeted at high-speed communications; requires microcontroller interface and cannot replace analog VDBS/VMAG control directly. | Choose LMH6401IRGTR only for digitally controlled, GHz-range applications where analog interface compatibility is not required. |
Compared with AD8330ACPZ-R7, AD8370ACPZ-R7 trades lower noise and analog dual-interface flexibility for extreme bandwidth, while LMH6401IRGTR replaces analog control with digital precision at significantly higher power and integration complexity-neither offers drop-in replacement capability.
Availability
AD8330ACPZ-R7 is available at Aetrix Electronics and suitable for pre-ADC signal conditioning, AGC amplifier designs, and 75 Ω cable driving applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for AD8330ACPZ-R7 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, founded in 1965 and headquartered in Wilmington, MA.
The AD8330ACPZ-R7 belongs to Analog Devices' precision wideband amplifier product line, engineered for demanding signal chain applications including instrumentation, medical imaging, and communications infrastructure where gain accuracy, noise, and bandwidth stability are critical.
FAQ
What is the maximum small-signal bandwidth of the AD8330ACPZ-R7?
The AD8330ACPZ-R7 maintains a constant 150 MHz small-signal −3 dB bandwidth across its entire 0 dB to 50 dB gain range. This bandwidth is specified at VS = 5 V, TA = 25°C, with 12 pF load on both OPHI and OPLO pins and infinite load resistance. It remains stable up to +85°C and down to −40°C, making AD8330ACPZ-R7 suitable for wideband applications where gain-dependent frequency response cannot be tolerated.
Does the AD8330ACPZ-R7 support single-ended input operation?
Yes, the AD8330ACPZ-R7 supports single-ended input operation despite its fully differential architecture. The INHI and INLO pins can accept a single-ended signal referenced to COMM, with the unused input terminated to COMM via a matched resistor. Input common-mode voltage must remain within 0 V to VS, and performance metrics such as noise and distortion may differ slightly versus true differential drive-verified in the AD8330ACPZ-R7 datasheet Figure 56.
How does the OFST pin affect DC accuracy in the AD8330ACPZ-R7?
The OFST pin on the AD8330ACPZ-R7 controls internal offset compensation: when left unconnected, the feature is enabled and reduces differential output offset to 1 mV rms; when grounded, it is disabled and offset rises to ±40 mV. This allows system designers to trade off DC accuracy against potential loop stability issues in high-gain closed-loop configurations-critical for precision DC-coupled AD8330ACPZ-R7 implementations.
Can the AD8330ACPZ-R7 drive a 75 Ω coaxial cable directly?
The AD8330ACPZ-R7 has a 150 Ω differential output impedance, which matches a 75 Ω single-ended coaxial line when terminated with a simple 75 Ω resistor to CNTR at the load end. With VMAG ≥ 2 V, it delivers up to ±4.5 V (9 Vp-p) differential swing-sufficient to drive long 75 Ω cables without clipping. Full characterization of cable-driving performance, including rise time and jitter, is provided in AD8330ACPZ-R7 Application Note AN-1119.
What are the supply voltage requirements for the AD8330ACPZ-R7?
The AD8330ACPZ-R7 operates from a single 2.7 V to 6 V supply applied across VPSI/VPSO/VPOS and COMM. It features separate supply pins (VPSI, VPSO, VPOS) to isolate input, output, and core stages-reducing crosstalk and improving PSRR. At 5 V, quiescent current is 20 mA typical; total power dissipation in the 3 mm × 3 mm LFCSP package is rated up to 1.67 W, with θJA = 60°C/W.
AD8330ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Variable Gain
- Number of Circuits:
- 1
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 1500V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 150 MHz
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- -
- Current - Supply:
- 20mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LFCSP-WQ (3x3)
AD8330ACPZ-R7 FAQ
1.How can I place an order for AD8330ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8330ACPZ-R7 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 AD8330ACPZ-R7 reliable?
The price and inventory of AD8330ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8330ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8330ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8330ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8330ACPZ-R7?
AD8330ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8330ACPZ-R7 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 AD8330ACPZ-R7?
For technical support, including AD8330ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8330ACPZ-R7 requirements.
6.How does Aetrix verify that AD8330ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8330ACPZ-R7 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 AD8330ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8330ACPZ-R7?
All AD8330ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8330ACPZ-R7, 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 AD8330ACPZ-R7 part is unused and in its original packaging.
Return procedure for AD8330ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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