Analog Devices Inc. AD600JRZ-R7
- Part No.:
- AD600JRZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD600JRZ-R7.pdf
- Description:
- IC VARIABLE GAIN 2 CIRC 16SOIC
- Quantity:
- Payment:

- Shipping:

Inventory:761
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Product details
Overview
AD600JRZ-R7 from Analog Devices is a dual-channel, low-noise, wideband variable gain amplifier (VGA) optimized for ultrasound time-gain control and precision analog signal conditioning. It delivers 0 dB to +40 dB linear-in-dB gain per channel, 1.4 nV/√Hz input noise, 35 MHz −3 dB bandwidth, and ±2 ns group delay stability across gain settings - enabling high-fidelity signal amplification in medical imaging front-ends.
For engineers reviewing the AD600JRZ-R7 datasheet, AD600JRZ-R7 pinout, AD600JRZ-R7 application, or AD600JRZ-R7 equivalent, key selection considerations include its differential gain-control interface (32 dB/V), independent gating per channel, 100 Ω input impedance, ±2.5 V output swing into 500 Ω, and SOIC-16 packaging suitable for high-density analog signal chains requiring stable gain accuracy and minimal distortion.
Technical Context
The AD600JRZ-R7 implements Analog Devices' proprietary X-AMP® architecture: each channel combines a laser-trimmed 7-stage R-2R passive attenuator (0 dB to −42.14 dB) with a fixed-gain amplifier (41.07 dB). This topology decouples gain setting from active amplification, enabling precise linear-in-dB response and low distortion even at full bandwidth.
Its fully differential gain-control interface offers 15 MΩ input resistance, 31.25 mV/dB scaling, and <1 μs response; each channel includes TTL/CMOS-compatible gating (GAT1/GAT2) that sets output DC level to within ±10 mV of A1CM/A2CM while reducing gated-off noise to 65 nV/√Hz and feedthrough to −80 dB at 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 0 dB to +40 dB per channel - enables precise time-gain compensation over wide dynamic ranges without manual range switching. |
| Input Noise Spectral Density | 1.4 nV/√Hz - ensures high SNR in low-level signal amplification (e.g., ultrasound echo reception) without degrading system noise floor. |
| −3 dB Bandwidth | 35 MHz - supports broadband RF, IF, and ultrasonic signals up to 10 MHz with ±0.5 dB flatness and ±2 ns group delay variation. |
| Gain Accuracy | ±0.3 dB typical absolute gain error - guarantees repeatable amplitude scaling critical for calibrated measurement and beamforming. |
| Output Drive | ±2.5 V min into 500 Ω - sufficient to directly drive high-speed ADC inputs (e.g., 12–14-bit, 40+ MSPS) without external buffering. |
| Supply Voltage | ±4.75 V to ±5.25 V - compatible with standard dual-rail analog supply rails and low-noise LDOs. |
| Quiescent Current | 12.5 mA per channel - balances performance and power efficiency in multi-channel systems (e.g., 64-channel ultrasound receivers). |
Pinout & Package
AD600JRZ-R7 is housed in a 16-lead SOIC package (JEDEC MS-012AC, body width 3.9 mm), rated for 0°C to +70°C operation (J-grade). Pin layout supports dual independent channels with dedicated signal, gain-control, gating, and ground terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1LO / C2LO | CH1/CH2 gain-control low input | Differential input pair; positive voltage reduces gain - enables bidirectional, temperature-stable 32 dB/V scaling with 15 MΩ input resistance. |
| A1HI / A2HI | CH1/CH2 signal input high | Differential input terminal; accepts ±1.4 V peak signal with 100 Ω input impedance - matched to 50 Ω or 100 Ω source impedances. |
| A1LO / A2LO | CH1/CH2 signal input low | Input ground reference; must be connected directly to source ground to maintain gain accuracy and CMRR >30 dB at 100 kHz. |
| GAT1 / GAT2 | CH1/CH2 gating control | TTL/CMOS-compatible logic input; high state blocks signal path and forces output to A1CM/A2CM within ±10 mV - essential for time-multiplexed TGC. |
| A1OP / A2OP | CH1/CH2 output | Single-ended output capable of ±2.5 V into 500 Ω; drives ADCs or downstream filters without level-shifting or buffering. |
| VPOS / VNEG | Positive/negative supply | Shared dual supplies for both channels; requires low-noise ±5 V rails with adequate decoupling (0.1 µF ceramic + 10 µF tantalum per rail). |
Key Features
| Feature | Design Value |
|---|---|
| Linear-in-dB gain control | 32 dB/V scaling with ±0.2 dB deviation - eliminates need for lookup tables or digital calibration in AGC loops. |
| Independent channel gating | Sub-μs on/off switching with <±10 mV output offset - enables precise time-synchronized blanking in phased-array ultrasound. |
| X-AMP® architecture | Passive R-2R attenuator + fixed-gain amplifier - achieves low distortion (−60 dBc THD) and stable bandwidth regardless of gain setting. |
| Stable group delay | ±2 ns variation vs. gain and frequency (1–10 MHz) - preserves pulse shape integrity in time-domain applications like sonar and TOF sensing. |
| Low input capacitance | 2 pF - minimizes high-frequency loading and phase shift when interfacing with transducer arrays or RF filters. |
Applications
| Ultrasound Time-Gain Control (TGC) | High-Speed ADC Driver |
|---|---|
Use Scenario: Amplifying weak, depth-dependent echoes from piezoelectric transducers in real-time B-mode imaging. IC Role / Device Role / Timing Role: Dual-channel VGA providing programmable, time-synchronized gain ramp (0–40 dB) per scan line with sub-μs gating. Use Value: Enables 120 dB dynamic range acquisition using single 14-bit ADC per channel while maintaining pulse fidelity and SNR >76 dB. |
Use Scenario: Driving the analog input of high-resolution, high-sample-rate ADCs in digitizers and spectrum analyzers. IC Role / Device Role / Timing Role: Precision gain-setting buffer delivering ±2.5 V full-scale signal with <−60 dBc THD at 10 MHz. Use Value: Eliminates external op-amp driver stage, reducing board area and preserving ENOB by minimizing noise and distortion before sampling. |
| RF/IF Automatic Gain Control | Low-Noise Preamplifier Stage |
Use Scenario: Maintaining constant signal level across varying RF input power in receiver front-ends (e.g., radar, comms). IC Role / Device Role / Timing Role: Dual VGA with differential gain control and fast response (<1 μs) for closed-loop AGC feedback. Use Value: Achieves 70 dB control range with <±0.3 dB gain error, supporting RMS-detected AGC loops with minimal ripple. |
Use Scenario: Boosting microvolt-level sensor outputs (e.g., hydrophones, MEMS mics) prior to filtering or digitization. IC Role / Device Role / Timing Role: First-stage amplifier with 1.4 nV/√Hz noise and 100 Ω input impedance matched to low-Z sources. Use Value: Maximizes system SNR by placing lowest-noise gain closest to source - avoids degradation from cable capacitance or PCB trace resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar variable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD602JRZ-R7 | Lower gain range (−10 dB to +30 dB), same 1.4 nV/√Hz noise, improved SNR (86 dB vs. 76 dB) due to 10 dB lower fixed-gain stage. | Better suited for low-input-level, high-SNR applications where maximum gain <30 dB suffices (e.g., audio AGC, precision instrumentation). | Select AD602JRZ-R7 when SNR >80 dB is prioritized over maximum gain; not pin-compatible due to different internal resistor network (694 Ω vs. 2.24 kΩ feedback). |
| LMH6401IRGT | Single-channel, 35 dB gain range (12–47 dB), higher bandwidth (1.7 GHz), higher noise (2.4 nV/√Hz), current-feedback architecture. | Targeted at RF/IF gain control above 100 MHz; lacks independent gating and differential gain interface. | Choose LMH6401IRGT only for GHz-range applications requiring faster settling; unsuitable for ultrasound TGC due to missing gating and poor low-frequency noise performance. |
Compared with AD602JRZ-R7 and LMH6401IRGT, AD600JRZ-R7 uniquely combines dual-channel operation, precise linear-in-dB control, sub-μs gating, and ultra-low noise in a single SOIC package - making it the optimal choice for time-critical, multi-channel analog signal conditioning where gain accuracy and pulse fidelity are non-negotiable.
Availability
AD600JRZ-R7 is available at Aetrix Electronics and suitable for ultrasound imaging systems, high-speed data acquisition, RF automatic gain control circuits, and precision test equipment requiring stable component supply and long-term manufacturability.
Supply support for AD600JRZ-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 Wilmington, MA.
The AD600JRZ-R7 belongs to Analog Devices' X-AMP® family of precision variable gain amplifiers, designed specifically for demanding analog signal conditioning in medical ultrasound, sonar, instrumentation, and communications infrastructure.
FAQ
What is the operating temperature range for the AD600JRZ-R7?
The AD600JRZ-R7 is a J-grade device specified for operation from 0°C to +70°C. It is packaged in a 16-lead SOIC and intended for commercial and industrial applications where ambient temperatures remain within this range. For extended temperature operation (−40°C to +85°C), the AD600ARZ-R7 (A-grade) is available. The AD600JRZ-R7 datasheet confirms these limits under Absolute Maximum Ratings and Specifications tables.
Does the AD600JRZ-R7 support true differential input signals?
No, the AD600JRZ-R7 does not accept fully differential input signals. Its input structure uses pseudo-differential topology: A1HI and A1LO form a single-ended input pair referenced to local ground, with A1LO serving as the dedicated input ground return. Common-mode rejection is provided between A1LO and A1CM (up to ±100 mV), but the device requires single-ended or ground-referenced differential sources - not balanced differential inputs like those used in fully differential amplifiers.
Can the AD600JRZ-R7 be used in a cascaded configuration for 80 dB total gain?
Yes, the AD600JRZ-R7 supports cascaded operation: connecting A1OP/A1CM to A2HI/A2LO via an AC-coupling capacitor achieves a combined gain range of −2 dB to +82 dB. This configuration leverages both channels on one AD600JRZ-R7 die and is documented in the "Achieving 80 dB Gain Range" section of the AD600/AD602 datasheet Rev. F. Careful attention to dc offset blocking and gain-control interface coordination (e.g., sequential or parallel mode) is required to maintain accuracy and SNR.
What is the purpose of the C1LO and C1HI pins on the AD600JRZ-R7?
C1LO and C1HI are the differential gain-control inputs for Channel 1 of the AD600JRZ-R7. They form a high-impedance (15 MΩ), temperature-stable interface with 32 dB/V scaling - meaning a 1 V differential change between C1HI and C1LO adjusts gain by 32 dB. This allows precise, supply-independent gain programming using DACs, op-amps, or microcontroller PWM filtered through an RC network. The AD600JRZ-R7 datasheet specifies operation over −625 mV to +625 mV differential voltage.
Is the AD600JRZ-R7 pin-compatible with the AD602JRZ-R7?
No, the AD600JRZ-R7 is not pin-compatible with the AD602JRZ-R7. Although both share identical pinouts and SOIC-16 packaging, their internal feedback networks differ: AD600JRZ-R7 uses 2.24 kΩ (RF2), while AD602JRZ-R7 uses 694 Ω. This affects gain calibration and gain-control transfer function. Substituting one for the other without circuit revision will result in incorrect gain scaling and potential instability. The datasheet explicitly lists them as separate ordering options with distinct electrical characteristics.
AD600JRZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- X-AMP®
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Variable Gain
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 275V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 35 MHz
- Current - Input Bias:
- 350 nA
- Voltage - Input Offset:
- -
- Current - Supply:
- 11mA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 9.5 V
- Voltage - Supply Span (Max):
- 10.5 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
AD600JRZ-R7 FAQ
1.How can I place an order for AD600JRZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD600JRZ-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 AD600JRZ-R7 reliable?
The price and inventory of AD600JRZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD600JRZ-R7 is usually 5 days.
3.What payment methods are accepted for AD600JRZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD600JRZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD600JRZ-R7?
AD600JRZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD600JRZ-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 AD600JRZ-R7?
For technical support, including AD600JRZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD600JRZ-R7 requirements.
6.How does Aetrix verify that AD600JRZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD600JRZ-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 AD600JRZ-R7 meets industry standards.
7.What is the process for return or replacement of AD600JRZ-R7?
All AD600JRZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD600JRZ-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 AD600JRZ-R7 part is unused and in its original packaging.
Return procedure for AD600JRZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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