My Inquiry
My Account
Analog Devices Inc. AD8375ACPZ-R7
- Part No.:
- AD8375ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 24-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD8375ACPZ-R7.pdf
- Description:
- IC VARIABLE GAIN 1 CIRC 24LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,391
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8375ACPZ-R7 from Analog Devices is an ultralow distortion, digitally controlled variable gain amplifier (VGA) optimized for intermediate frequency (IF) receiver stages. It delivers −4 dB to +20 dB gain in 1 dB steps, 630 MHz bandwidth, 50 dBm output IP3 at 200 MHz, and differential input/output architecture - enabling high-linearity ADC driving in wideband multichannel receivers.
For engineers reviewing the AD8375ACPZ-R7 datasheet, AD8375ACPZ-R7 pinout, AD8375ACPZ-R7 application, or AD8375ACPZ-R7 equivalent, key selection criteria include gain flatness (0.12 dB), noise figure stability (8.3 dB across gain range), power-down current (<3 mA), open-collector output biasing requirements, and 24-lead LFCSP thermal performance at 130 mA quiescent current.
Technical Context
The AD8375ACPZ-R7 implements a 150 Ω digitally controlled passive attenuator followed by a high-linearity SiGe transconductance amplifier. Its open-collector output stage requires external RF chokes (e.g., 1 µH) for DC biasing, making gain load-dependent per VOUT = 20 × log(RL/150) + 20 dB.
Gain control uses a parallel 5-bit TTL-compatible interface (A0–A4), with PWUP enabling/disabling. CMRR exceeds 55 dB at 25°C, and harmonic distortion remains below −85 dBc (HD2) and −92 dBc (HD3) at 200 MHz under 2 Vp-p output - enabled by proprietary distortion cancellation techniques.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 630 MHz - supports wideband IF sampling up to 315 MHz Nyquist zone without external equalization. |
| Gain Range & Step | −4 dB to +20 dB in 1 dB ±0.2 dB steps - enables precise AGC loop resolution for dynamic signal conditioning. |
| Output IP3 | 50 dBm at 200 MHz (3 dBm/tone) - ensures >86 dBc SFDR when driving 14-bit ADCs like AD9445. |
| Noise Figure | 8.3 dB at max gain - maintains consistent SNR floor across gain settings due to constant SFDR vs. gain architecture. |
| Supply & Current | Single 5 V supply; 125 mA typical quiescent current; <3 mA in power-down - simplifies thermal design in dense RF modules. |
| Differential I/O | 150 Ω differential input impedance; open-collector outputs requiring external pull-up chokes - mandates careful layout for balanced routing and minimal parasitic capacitance. |
| Operating Temp | −40°C to +85°C - validated for industrial and base station IF subsystems with no gain drift compensation required. |
Pinout & Package
AD8375ACPZ-R7 is housed in a 4 mm × 4 mm, 24-lead LFCSP package with exposed paddle thermally connected to ground. Pin 1 is VCOM; pins 9, 10, 12, 13, 23 are VPOS; pins 11, 14, 20, 21, 22, 24 are COMM (DC ground); exposed pad must be soldered to low-impedance ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCOM (Pin 1) | Common-mode reference | Provides internal 2 V reference; requires external bypass capacitor for single-ended input linearity. |
| VIN+, VIN− (Pins 2, 3) | Differential analog input | 150 Ω differential impedance; 125–165 Ω tolerance; common-mode voltage fixed at ~2 V. |
| A0–A4 (Pins 4–8) | Parallel gain control inputs | 5-bit binary code (MSB A4 → LSB A0); TTL-compatible (VIL ≤ 0.8 V, VIH ≥ 1.6 V). |
| PWUP (Pin 19) | Chip enable | Logic high enables operation; logic low reduces current to <3 mA and provides >60 dB input-to-output isolation. |
| VOUT+, VOUT− (Pins 15, 16, 17, 18) | Differential open-collector outputs | Require external 1 µH RF chokes to +5 V; dual-pin pairing per polarity improves balance and reduces even-order distortion. |
Key Features
| Feature | Design Value |
|---|---|
| Constant SFDR vs. gain | Maintains >86 dBc spurious-free dynamic range across full −4 dB to +20 dB gain range - critical for AGC-stabilized receivers. |
| Ultralow harmonic distortion | HD2 ≤ −85 dBc and HD3 ≤ −92 dBc at 200 MHz (2 Vp-p) - enables clean spectral purity in predistortion and instrumentation applications. |
| Thermally enhanced LFCSP | θJA = 63.6°C/W with exposed paddle soldered - supports 130 mA continuous operation at +85°C ambient without derating. |
| Fast gain settling | 5 ns step response (gain code 10100 → 00000) - meets timing constraints in fast-hopping IF systems and burst-mode receivers. |
| Input-to-output isolation | >60 dB in power-down mode - prevents signal leakage into sensitive front-end stages during sleep cycles. |
Applications
| High IF Sampling Receiver | Differential ADC Driver |
|---|---|
|
Use Scenario: IF stage in cellular base station transceivers operating at 140–200 MHz with dynamic signal range exceeding 80 dB. IC Role / Device Role / Timing Role: Digitally controlled VGA providing programmable gain before ADC sampling, maintaining constant SFDR during AGC adjustments. Use Value: Enables 14-bit ADCs (e.g., AD9445) to achieve 86 dBc SFDR at 100 MHz while supporting 24 dB gain control range without recalibration. |
Use Scenario: Front-end driver for high-speed pipeline or sigma-delta ADCs in test equipment requiring wideband, low-noise signal conditioning. IC Role / Device Role / Timing Role: Differential output buffer with open-collector architecture, matched to 150 Ω ADC input impedance via external termination network. Use Value: Delivers 19 dBm P1dB and 50 dBm OIP3 into 150 Ω load - preserves ENOB in 125 MSPS+ converters across full gain range. |
| Wideband Multichannel Receiver | Instrumentation Signal Chain |
|
Use Scenario: Phased array radar or spectrum monitoring systems with 8–32 parallel IF paths demanding matched gain/phase and low crosstalk. IC Role / Device Role / Timing Role: Channelized VGA with parallel digital control, enabling synchronized gain updates across multiple AD8375ACPZ-R7 units. Use Value: Gain flatness of 0.12 dB over 20% fractional bandwidth ensures amplitude consistency across channels at 140 MHz center frequency. |
Use Scenario: Precision signal generator output stage or vector network analyzer receiver path requiring ultra-low distortion and calibrated gain steps. IC Role / Device Role / Timing Role: Programmable gain element with 1 dB resolution and <0.2 dB step error - traceable for metrology-grade calibration. Use Value: Second-harmonic distortion <−98 dBc at 70 MHz allows accurate harmonic analysis without correction algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar variable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADL5330ACPZ-R7 | Higher 1.2 GHz bandwidth but lower 42 dBm OIP3 at 200 MHz; requires dual 5 V/−5 V supplies. | Better suited for RF gain control above 500 MHz; less optimal for IF-focused designs where distortion floor dominates. | Select ADL5330ACPZ-R7 only when bandwidth >800 MHz is mandatory and power supply headroom permits dual-rail operation. |
| LMH6401IRGTR | Analog gain control (0–24 dB) instead of digital; 900 MHz bandwidth; 47 dBm OIP3 at 200 MHz; 3.3 V operation. | Preferred for systems using analog AGC loops or where digital control lines are unavailable; lower supply voltage reduces power density. | Choose LMH6401IRGTR when system-level gain control is analog-based or when 3.3 V supply simplifies power architecture despite slightly lower linearity. |
Compared with ADL5330ACPZ-R7 and LMH6401IRGTR, AD8375ACPZ-R7 offers superior distortion performance (50 dBm OIP3) and true 1 dB digital step accuracy within its 630 MHz bandwidth - making it the optimal choice for IF-sampling receivers prioritizing SFDR stability and thermal efficiency at 5 V.
Availability
AD8375ACPZ-R7 is available at Aetrix Electronics and suitable for high IF sampling receivers, differential ADC drivers, wideband multichannel receivers, and instrumentation signal chains requiring stable component supply, guaranteed long-term availability, and full traceability.
Supply support for AD8375ACPZ-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, headquartered in Norwood, MA.
The AD8375ACPZ-R7 belongs to Analog Devices' ultralow distortion IF VGA product line, designed specifically for wideband receiver architectures requiring constant SFDR, precise digital gain control, and robust thermal performance in compact LFCSP packages.
FAQ
What is the recommended power supply decoupling for AD8375ACPZ-R7?
Each VPOS pin (pins 9, 10, 12, 13, 23) requires a minimum 0.1 µF ceramic capacitor placed as close as possible to the pin, with additional bulk capacitance (e.g., 10 µF tantalum) on the 5 V rail. The VCOM pin also needs a dedicated 0.1 µF capacitor to ground to stabilize the internal 2 V reference and improve linearity in single-ended configurations. AD8375ACPZ-R7 exhibits sensitivity to high-frequency supply noise due to its SiGe core, so low-ESL capacitors and short traces are essential.
How does load impedance affect gain accuracy in AD8375ACPZ-R7?
AD8375ACPZ-R7's voltage gain is directly proportional to load impedance due to its open-collector output architecture: Gain (dB) = 20 × log(RL/150) + 20. For specified accuracy (±0.2 dB step error), RL must be 150 Ω differential. Deviations - e.g., 100 Ω or 200 Ω - shift absolute gain by −3.5 dB or +1.8 dB respectively, and degrade gain flatness. AD8375ACPZ-R7 data sheet performance assumes RL = 150 Ω with proper choke biasing.
Can AD8375ACPZ-R7 drive a 50 Ω single-ended load?
No - AD8375ACPZ-R7 is strictly a differential-output device with open-collector pins configured for 150 Ω differential termination. Driving a 50 Ω single-ended load violates its specified operating conditions, degrades CMRR, increases second-harmonic distortion by >15 dB, and risks gain miscalibration. For single-ended interfaces, use a balun (e.g., ETC1-1-13) or differential-to-single-ended amplifier after AD8375ACPZ-R7.
What is the maximum input signal level AD8375ACPZ-R7 can handle linearly at minimum gain?
At minimum gain (−4 dB), AD8375ACPZ-R7 supports up to 8.5 Vp-p differential input swing for linear operation, corresponding to +22 dBm into 150 Ω. This headroom enables handling large transient signals in burst-mode receivers without clipping. Input protection diodes are not integrated, so external clamping is required if signals exceed the absolute maximum rating of −0.15 V to +4.15 V per input pin relative to ground.
Does AD8375ACPZ-R7 require external biasing components for operation?
Yes - AD8375ACPZ-R7 requires external 1 µH RF chokes on both VOUT+ and VOUT− pins to provide DC bias current, plus AC-coupling capacitors (0.1 µF typical) on input and output. The chokes must have SRF >160 MHz (e.g., Coilcraft 0805LS-102XJBB) to avoid resonance within the 630 MHz bandwidth. Failure to implement correct biasing results in gain compression, increased distortion, and unstable output common-mode voltage.
AD8375ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Variable Gain
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 5000V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 630 MHz
- Current - Input Bias:
- 900 nA
- Voltage - Input Offset:
- -
- Current - Supply:
- 125mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-LFCSP-VQ (4x4)
AD8375ACPZ-R7 FAQ
1.How can I place an order for AD8375ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8375ACPZ-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 AD8375ACPZ-R7 reliable?
The price and inventory of AD8375ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8375ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8375ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8375ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8375ACPZ-R7?
AD8375ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8375ACPZ-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 AD8375ACPZ-R7?
For technical support, including AD8375ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8375ACPZ-R7 requirements.
6.How does Aetrix verify that AD8375ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8375ACPZ-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 AD8375ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8375ACPZ-R7?
All AD8375ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8375ACPZ-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 AD8375ACPZ-R7 part is unused and in its original packaging.
Return procedure for AD8375ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8375ACPZ-R7 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
