My Inquiry
My Account
Analog Devices Inc. AD7387BCPZ-RL7
- Part No.:
- AD7387BCPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7387BCPZ-RL7.pdf
- Description:
- IC ADC 14BIT SAR 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,300
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7387BCPZ-RL7 from Analog Devices is a 14-bit, dual simultaneous sampling SAR ADC with 4-channel input (two 2:1 multiplexed pairs), 4 MSPS throughput, ±0.5 LSB typical INL, and operation over −40°C to +125°C - used in motor control current sense and power quality monitoring systems requiring precise, time-aligned voltage/current acquisition.
For engineers reviewing the AD7387BCPZ-RL7 datasheet, AD7387BCPZ-RL7 pinout, AD7387BCPZ-RL7 application, or AD7387BCPZ-RL7 equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and timing behavior, and real-world use context for high-speed industrial sensing designs.
Technical Context
The AD7387BCPZ-RL7 implements two independent SAR ADC cores with synchronized sampling on falling edge of CS, supporting channel sequencer mode and dual-pair acquisition without inter-channel skew. Its on-chip oversampling block enables normal averaging (OSR = 4) and rolling average (OSR = 8) modes to boost effective resolution and SNR up to 90.5 dB.
It integrates a buffered 2.5 V internal reference (10 ppm/°C max), supports external reference up to 3.3 V, and features alert functionality triggered by programmable high/low thresholds. Digital interface operates with 1.65 V–3.6 V logic supply and standard SPI-compatible serial protocol with SDOA/SDOB outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonic transfer function and no missing codes across full temperature range. |
| Throughput Rate | 4 MSPS per channel pair - enables real-time capture of fast transients in motor phase currents or grid harmonics. |
| INL (typ) | ±0.5 LSB - ensures <0.008% full-scale linearity error for precision closed-loop control feedback. |
| SNR (typ) | 84 dB at 1 kHz with 3.3 V external reference - supports >13.6 ENOB for clean signal reconstruction. |
| Channel Isolation | −111.5 dB - prevents crosstalk between AINA0/AINA1 and AINB0/AINB1 during simultaneous sampling. |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive, industrial drive, and harsh-environment embedded systems. |
| Package | 16-lead 3 mm × 3 mm LFCSP - surface-mount footprint with exposed pad for thermal management in compact PCB layouts. |
Pinout & Package
AD7387BCPZ-RL7 uses a 16-lead, 3 mm × 3 mm lead frame chip scale package (LFCSP) with exposed thermal pad connected to GND. Pin 1 is top-left corner (GND), and pin numbering follows standard counter-clockwise orientation as shown in Figure 7 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 10) | Ground reference | Primary analog/digital return path; both pins must be low-inductance connected to system ground plane. |
| VLOGIC (Pin 2) | Logic supply input | Supplies digital interface (1.65 V–3.6 V); decoupled with 1 µF capacitor to GND for noise immunity. |
| REGCAP (Pin 3) | Internal regulator decoupling | Stabilizes internal 1.9 V regulator output; requires 1 µF capacitor to GND for stable operation. |
| VCC (Pin 4) | Analog power supply | 3.0 V–3.6 V main supply; decoupled with 1 µF capacitor to GND to minimize switching noise coupling into ADC core. |
| AINB1 / AINB0 (Pins 5, 6) | Analog inputs for ADC B | Single-ended channels for second simultaneous sampling pair; track/hold input capacitance is 18 pF (track) / 5 pF (hold). |
| AINA1 / AINA0 (Pins 7, 8) | Analog inputs for ADC A | Single-ended channels for first simultaneous sampling pair; matched aperture delay (<450 ps) ensures sub-ns inter-channel alignment. |
| REFCAP (Pin 9) | Reference decoupling | Filters 2.5 V bandgap reference; requires 0.1 µF capacitor to GND - omitted if external reference is used. |
| REFIO (Pin 11) | Reference I/O | Configurable as 2.5 V output or 2.5 V–3.3 V input; REFSEL bit in CONFIGURATION1 register selects mode. |
| CS (Pin 12) | Chip select | Active-low conversion trigger and SPI frame sync; falling edge initiates acquisition and defines data window. |
| SDOA (Pin 13) | Serial data output A | Provides conversion results from ADC A or ADC B, or register readback; tri-state when CS high. |
| SDOB/ALERT (Pin 14) | Dual-function terminal | Outputs ADC B data OR asserts active-low ALERT when result exceeds programmed threshold limits. |
| SDI (Pin 15) | Serial data input | Writes configuration registers (CONFIGURATION1/2, ALERT thresholds); setup/hold times are 1 ns relative to SCLK. |
| SCLK (Pin 16) | Serial clock input | Drives SPI interface; minimum period 12.5 ns (80 MHz max), with 5 ns high/low times for reliable timing margin. |
| EPAD | Exposed thermal pad | Mandatory GND connection for thermal dissipation and EMI reduction; soldered to PCB thermal plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous sampling | Two independent SAR cores acquire AINA0/AINA1 and AINB0/AINB1 at identical timestamps - critical for vector-controlled motor drives. |
| On-chip oversampling | Normal averaging (OSR = 4) and rolling average (OSR = 8) modes increase dynamic range by up to 6.7 dB without external processing. |
| Alert function | Hardware interrupt generated when conversion result crosses user-defined high/low thresholds - enables real-time fault detection without CPU polling. |
| Integrated 2.5 V reference | 10 ppm/°C max drift and 7 µV rms noise - eliminates need for external reference in cost-sensitive industrial applications. |
| Wide temperature range | Specified performance from −40°C to +125°C - suitable for engine bay, power converter, and factory automation deployments. |
Applications
| Motor Control Current Sense | Power Quality Monitoring |
|---|---|
Use Scenario: Real-time measurement of three-phase motor winding currents using shunt resistors and isolated amplifiers. IC Role / Device Role / Timing Role: Dual simultaneous sampling captures phase A and B currents at exact same instant to compute accurate torque vector. Use Value: <0.5 LSB INL and −111.5 dB channel isolation prevent cross-phase error in field-oriented control algorithms. |
Use Scenario: Detection of harmonic distortion, voltage sags, and transient events in AC distribution systems. IC Role / Device Role / Timing Role: High-throughput 4 MSPS sampling captures fast grid anomalies while oversampling improves SNR for FFT-based spectral analysis. Use Value: 84 dB SNR and 90.5 dB oversampled dynamic range enable reliable classification of THD >0.5% and sub-cycle disturbances. |
| Sonar Signal Acquisition | Erbium-Doped Fiber Amplifier (EDFA) |
Use Scenario: Digitizing echo return signals from ultrasonic transducers in industrial level sensing or proximity detection. IC Role / Device Role / Timing Role: Simultaneous sampling of transmit and receive paths enables precise time-of-flight calculation with minimal jitter. Use Value: 20 ps aperture jitter and 450 ps aperture delay match ensure <1 mm distance resolution at 1.5 MHz carrier frequency. |
Use Scenario: Closed-loop bias control of pump lasers in optical fiber amplifiers using photodiode feedback. IC Role / Device Role / Timing Role: High-precision 14-bit digitization of low-noise photocurrents with alert-triggered laser shutdown on overcurrent events. Use Value: Alert function reduces system response latency to <200 ns, preventing catastrophic optical damage during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7386BCPZ-RL7 | 16-bit resolution, ±1.5 LSB INL (typ), 87.5 dB SNR (3.3 V ref), higher power (26 mA IVCC) | Better resolution and SNR for metrology-grade measurements; less suitable where 14-bit suffices and power budget is tight | Select AD7386BCPZ-RL7 when ENOB >14.2 is required and board space allows same LFCSP footprint. |
| AD7388BCPZ-RL7 | 12-bit resolution, ±0.2 LSB INL (typ), 73.8 dB SNR (3.3 V ref), lower power (2.2 mA IVLOGIC) | Optimized for cost- and power-constrained systems where 12-bit accuracy meets control loop requirements | Choose AD7388BCPZ-RL7 for high-volume motor drives where 12-bit resolution satisfies IEC 61800-3 Class A compliance. |
Compared with AD7386BCPZ-RL7 and AD7388BCPZ-RL7, the AD7387BCPZ-RL7 delivers optimal balance of 14-bit precision, 4 MSPS speed, and thermal robustness - making it the preferred choice for industrial motor control and power analytics where 13–14 ENOB is required without over-specifying resolution or power.
Availability
AD7387BCPZ-RL7 is available at Aetrix Electronics and suitable for motor control current sense, power quality monitoring, sonar signal acquisition, and EDFA bias control requiring stable component supply across extended temperature and long production lifecycles.
Supply support for AD7387BCPZ-RL7 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, with design centers worldwide and ISO 9001-certified manufacturing.
The AD738x family was designed specifically for industrial and automotive real-time sensing applications demanding simultaneous multi-channel acquisition, wide temperature operation, and integrated signal conditioning - enabling compact, high-reliability data acquisition subsystems.
FAQ
What is the maximum sampling rate supported by the AD7387BCPZ-RL7?
The AD7387BCPZ-RL7 supports a maximum throughput rate of 4 MSPS per channel pair in single-channel-pair mode. When operating in alternating channel sequencer mode (SEQ = 1), the effective rate drops to 2 MSPS per channel. This is achieved with a minimum SCLK period of 12.5 ns and tCYC of 250 ns, as specified in Table 5 of the Rev. A datasheet.
Does the AD7387BCPZ-RL7 require an external reference voltage?
No, the AD7387BCPZ-RL7 includes a buffered 2.5 V internal reference with 10 ppm/°C maximum temperature coefficient and 7 µV rms noise. An external reference (2.49 V–3.4 V) may be used via the REFIO pin, but is optional - the internal reference is fully functional and calibrated across −40°C to +125°C.
How does the alert function work on the AD7387BCPZ-RL7?
The AD7387BCPZ-RL7's ALERT function is implemented on Pin 14 (SDOB/ALERT). When enabled via the ALERT register, it asserts low if a conversion result exceeds user-programmed high or low thresholds stored in ALERT_HIGH_THRESHOLD and ALERT_LOW_THRESHOLD registers. Response time is 200 ns from CS falling edge.
What is the purpose of the REGCAP pin on the AD7387BCPZ-RL7?
The REGCAP pin (Pin 3) provides access to the output of the internal 1.9 V regulator that powers digital circuitry. It must be decoupled to GND with a 1 µF capacitor to stabilize the regulator and suppress switching noise - failure to do so risks timing violations and increased digital supply noise coupling into analog sections.
Can the AD7387BCPZ-RL7 perform simultaneous sampling on all four analog inputs?
No - the AD7387BCPZ-RL7 performs true simultaneous sampling only on two pairs: AINA0/AINA1 (ADC A) and AINB0/AINB1 (ADC B). Each pair is sampled at the same instant, but ADC A and ADC B conversions are aligned within 450 ps aperture delay match. Full 4-channel simultaneous sampling is not supported; channel sequencing is required for more than two inputs.
AD7387BCPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 4M
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- Serial
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 1.65V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-LFCSP (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7387BCPZ-RL7 FAQ
1.How can I place an order for AD7387BCPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7387BCPZ-RL7 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 AD7387BCPZ-RL7 reliable?
The price and inventory of AD7387BCPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7387BCPZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD7387BCPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7387BCPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7387BCPZ-RL7?
AD7387BCPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7387BCPZ-RL7 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 AD7387BCPZ-RL7?
For technical support, including AD7387BCPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7387BCPZ-RL7 requirements.
6.How does Aetrix verify that AD7387BCPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD7387BCPZ-RL7 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 AD7387BCPZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD7387BCPZ-RL7?
All AD7387BCPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7387BCPZ-RL7, 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 AD7387BCPZ-RL7 part is unused and in its original packaging.
Return procedure for AD7387BCPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7387BCPZ-RL7 Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
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…
