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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Analog Devices Inc. AD4858BBCZ

Name: AD4858BBCZ
Brand: Analog Devices Inc.
SKU: AD4858BBCZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AD4858BBCZ

Manufacturer:: Analog Devices Inc.

Category:: Analog to Digital Converters (ADC)

Package:: 64-LFBGA

Datasheet:: AD4858BBCZ.pdf

Description:: 20-BIT, 8-CHANNEL SIM SAMPLING D

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AD4858BBCZ from Analog Devices is a buffered, 8-channel simultaneous sampling, 20-bit, 1 MSPS data acquisition system (DAS) with differential wide common-mode inputs, integrated 4.096 V reference and reference buffer, and rail-to-rail input overdrive tolerance. It delivers ±160 µV INL (±40 V range), 97.2 dB SNR, and 111.4 dB dynamic range for high-accuracy industrial instrumentation and avionics signal digitization.

For engineers reviewing the AD4858BBCZ datasheet, AD4858BBCZ pinout, AD4858BBCZ application, or AD4858BBCZ equivalent, this page provides verified technical context, real-world SoftSpan input range configuration, SHDR-enabled single-conversion performance metrics, SPI/LVDS digital interface options, and validated alternative DAS solutions for test & measurement and semiconductor manufacturing systems.

Technical Context

The AD4858BBCZ implements seamless high dynamic range (SHDR) technology that dynamically optimizes per-sample input path gain to minimize converter noise while preserving linearity-enabling 111.4 dB DR in ±40 V SoftSpan 15 mode without oversampling. Its picoamp-input analog buffers (±75 pA leakage at 25°C) and 120 dB CMRR support direct digitization of arbitrary-swing signals across −40 V to +48 V supply rails.

It features dual digital output interfaces: configurable CMOS (0.9 V–5.25 V) and LVDS serial buses, selectable via the LVDS/CMOS pin, with up to eight parallel CMOS data lines or differential LVDS pairs. The device supports per-channel SoftSpan ranges (±2.5 V to ±40 V), automatic gain ranging, and optional offset/gain/phase correction registers for system-level calibration.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	20-bit-guarantees no missing codes and enables ppm-level precision in high-dynamic-range applications.
Sampling Rate	1 MSPS per channel-supports simultaneous capture of fast transients across all 8 channels without inter-channel skew.
INL Error	±160 µV typical (±40 V range)-ensures <0.0004% full-scale accuracy critical for metrology-grade measurements.
SNR / DR	97.2 dB / 111.4 dB typical (SHDR on, ±40 V)-delivers >18.5 effective bits and eliminates need for external averaging in many applications.
Input Common-Mode Range	VEE + 3.2 V to VCC − 3.2 V-allows direct connection to ±25 V, ±40 V, or 0–40 V sensor outputs without level-shifting circuitry.
Reference	Integrated 4.096 V low-drift reference with ±2 ppm/°C TC-removes external voltage reference component and layout sensitivity.
Package	64-ball BGA, 7.00 mm × 7.00 mm-includes embedded decoupling capacitors, reducing PCB area and improving power integrity.

Pinout & Package

The AD4858BBCZ uses a 7.00 mm × 7.00 mm, 64-ball BGA package (ball pitch: 0.8 mm) with integrated supply and reference bypass capacitors. Pin functions are defined per the official Analog Devices AD4858 Rev. 0 datasheet, Section "Pin Configuration and Function Descriptions" (Page 19).

Pin/Terminal	Circuit Role	Design Meaning
IN0+ to IN7+	Differential positive analog input (8 channels)	Accepts rail-to-rail input voltages from VEE + 3.2 V to VCC − 3.2 V; supports bipolar/unipolar SoftSpan configuration per channel.
IN0− to IN7−	Differential negative analog input (8 channels)	Paired with corresponding INx+; enables true differential acquisition with 120 dB CMRR and ±75 pA input leakage.
VCC / VEE	Analog supply rails	Supports wide input voltage range: VCC = +7.25 V to +48 V, VEE = −40.75 V to 0 V; (VCC − VEE) = 10 V to 48 V.
VDD / VDDH / VDDL	Digital core & LDO supplies	VDD = 4.75–5.25 V (core); VDDH = 2.2–5.25 V (enables 1.8 V LDO); VDDL = 1.71–1.89 V (LDO output or external).
VIO	I/O voltage supply	Configurable 0.9 V–5.25 V-sets logic thresholds for SPI control and CMOS data outputs; compatible with FPGA/CPLD I/O banks.
LVDS/CMOS	Digital interface mode select	Hardware pin selects between LVDS or CMOS conversion data output; determines driver biasing and termination behavior.
REFIO / REFBUF	Reference input/output pins	REFIO = 4.096 V internal reference output; REFBUF = buffered version; both can be overdriven with external references.
CNV	Conversion start trigger	Edge-sensitive input initiating simultaneous sampling across all 8 channels; supports external timing synchronization.

Key Features

Feature	Design Value
Per-channel SoftSpan input ranges	16 programmable bipolar/unipolar ranges (±2.5 V to ±40 V or 0–2.5 V to 0–40 V) enable optimal ADC utilization per sensor signal swing.
Seamless High Dynamic Range (SHDR)	Automatically adjusts gain sample-by-sample to maximize SNR without sacrificing INL-no firmware overhead or latency penalty.
Integrated reference & buffer	4.096 V bandgap reference with ±2 ppm/°C drift and 20 µV offset buffer eliminates external components and improves thermal tracking.
Rail-to-rail input overdrive tolerance	Withstands ±(VCC − VEE) differential overvoltage and +10 mA overdrive current on INx+ without corrupting other channels' conversions.
Flexible digital interface	SPI register bus (0.9–5.25 V) plus selectable LVDS or CMOS data outputs-supports high-speed deterministic readout in noise-sensitive environments.

Applications

Automatic Test Equipment (ATE)	Avionics Signal Monitoring
Use Scenario: High-speed validation of multi-channel flight control sensor outputs (e.g., accelerometers, gyros, pressure transducers) under vibration and thermal stress. IC Role / Device Role / Timing Role: Simultaneous 8-channel sampling captures correlated transients across sensor suites with <300 ns full-scale settling and sub-ns aperture jitter. Use Value: Eliminates channel skew-induced phase errors; ±160 µV INL ensures traceable calibration against MIL-STD-1553 or ARINC 429 bus timing references.	Use Scenario: Real-time health monitoring of engine ECU analog feedback loops, including fuel flow, turbine temperature, and actuator position. IC Role / Device Role / Timing Role: Digitizes ±25 V or 0–25 V sensor outputs directly-no external amplifiers-while maintaining 111.4 dB DR across −40°C to +125°C operating range. Use Value: Reduces BOM count by integrating reference, buffer, and decoupling; SHDR preserves resolution during rapid throttle transients.
Industrial Process Control	Semiconductor Wafer Probers
Use Scenario: Closed-loop control of high-voltage plasma etch chambers using multiple synchronized analog feedback signals (RF forward/reflected power, chamber pressure, gas flow). IC Role / Device Role / Timing Role: Simultaneous sampling of 8 differential inputs with 120 dB CMRR rejects common-mode noise from RF generators and switching power supplies. Use Value: Enables real-time adaptive control algorithms with <1 µs inter-channel timing alignment-critical for plasma stability and etch uniformity.	Use Scenario: Precision DC parametric testing of wafer-level ICs requiring nanovolt-level offset stability and 20-bit resolution across multiple probe cards. IC Role / Device Role / Timing Role: Digitizes low-noise, low-leakage (<±75 pA) sensor outputs from Kelvin probes and SMUs with calibrated SoftSpan ranges per DUT pin. Use Value: Achieves <0.0004% full-scale accuracy without external calibration; integrated reference ensures repeatability across probe station thermal cycles.

Automatic Test Equipment (ATE)

Avionics Signal Monitoring

Use Scenario: High-speed validation of multi-channel flight control sensor outputs (e.g., accelerometers, gyros, pressure transducers) under vibration and thermal stress.

IC Role / Device Role / Timing Role: Simultaneous 8-channel sampling captures correlated transients across sensor suites with <300 ns full-scale settling and sub-ns aperture jitter.

Use Value: Eliminates channel skew-induced phase errors; ±160 µV INL ensures traceable calibration against MIL-STD-1553 or ARINC 429 bus timing references.

Use Scenario: Real-time health monitoring of engine ECU analog feedback loops, including fuel flow, turbine temperature, and actuator position.

IC Role / Device Role / Timing Role: Digitizes ±25 V or 0–25 V sensor outputs directly-no external amplifiers-while maintaining 111.4 dB DR across −40°C to +125°C operating range.

Use Value: Reduces BOM count by integrating reference, buffer, and decoupling; SHDR preserves resolution during rapid throttle transients.

Industrial Process Control

Semiconductor Wafer Probers

Use Scenario: Closed-loop control of high-voltage plasma etch chambers using multiple synchronized analog feedback signals (RF forward/reflected power, chamber pressure, gas flow).

IC Role / Device Role / Timing Role: Simultaneous sampling of 8 differential inputs with 120 dB CMRR rejects common-mode noise from RF generators and switching power supplies.

Use Value: Enables real-time adaptive control algorithms with <1 µs inter-channel timing alignment-critical for plasma stability and etch uniformity.

Use Scenario: Precision DC parametric testing of wafer-level ICs requiring nanovolt-level offset stability and 20-bit resolution across multiple probe cards.

IC Role / Device Role / Timing Role: Digitizes low-noise, low-leakage (<±75 pA) sensor outputs from Kelvin probes and SMUs with calibrated SoftSpan ranges per DUT pin.

Use Value: Achieves <0.0004% full-scale accuracy without external calibration; integrated reference ensures repeatability across probe station thermal cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision, multi-channel data acquisition applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD7606C-18	18-bit, 8-channel, 1 MSPS, ±10 V max input range, no integrated reference buffer, requires external 4.096 V reference.	Limited to ±10 V/0–10 V ranges; lacks SHDR and SoftSpan flexibility; lower DR (104 dB) and SNR (93 dB) than AD4858BBCZ in ±40 V mode.	Select when cost sensitivity outweighs need for >20-bit resolution or extended input voltage range; verify external reference stability meets ±2 ppm/°C requirement.
ADS8689	18-bit, 8-channel, 1 MSPS, integrated reference, but single-ended inputs only; max input ±12.5 V; no simultaneous sampling-uses sequencer-based acquisition.	No true simultaneous sampling; lower CMRR (100 dB); no SHDR; unsuitable for phase-critical multi-sensor correlation or high-common-mode applications.	Choose only for lower-cost, single-ended industrial I/O modules where channel-to-channel timing alignment is non-critical and input swings remain ≤±12.5 V.

Compared with AD7606C-18 and ADS8689, the AD4858BBCZ uniquely combines 20-bit resolution, ±40 V differential input capability, per-channel SoftSpan configuration, and SHDR-making it the only option capable of replacing external signal conditioning and reference subsystems in ATE and avionics DAS designs.

Availability

AD4858BBCZ is available at Aetrix Electronics and suitable for automatic test equipment, avionics signal monitoring, and semiconductor wafer prober applications requiring stable component supply, long-term lifecycle support, and guaranteed lot traceability.

Supply support for AD4858BBCZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and aerospace markets since 1965.

The AD4858BBCZ belongs to Analog Devices' precision data acquisition system (DAS) product line, engineered specifically for applications demanding simultaneous multi-channel sampling, wide input voltage tolerance, and uncompromised DC/AC accuracy in harsh environments.

FAQ

What is the maximum differential input voltage range supported by the AD4858BBCZ?

The AD4858BBCZ supports up to ±40 V differential input range in SoftSpan 15 mode, with corresponding unipolar 0 V to 40 V operation. This is enabled by its wide-supply architecture (VCC up to +48 V, VEE down to −40.75 V) and rail-to-rail input overdrive tolerance. The device maintains ±160 µV INL and 111.4 dB DR within this range when SHDR is active-verified per AD4858 Rev. 0 datasheet Table 1.

Does the AD4858BBCZ require external decoupling capacitors?

No, the AD4858BBCZ integrates all critical supply and reference bypass capacitors within its 64-ball BGA package. This eliminates the need for external bulk or high-frequency decoupling on VCC, VEE, VDD, and REFIO pins-reducing PCB footprint, component count, and sensitivity to layout parasitics. The design complies with Analog Devices' recommended layout guidelines in the AD4858 Rev. 0 datasheet, Section "Power Considerations" (Page 38).

How does Seamless High Dynamic Range (SHDR) improve performance in the AD4858BBCZ?

SHDR in the AD4858BBCZ dynamically optimizes input path gain on a sample-by-sample basis to minimize quantization noise without degrading linearity. In ±40 V SoftSpan 15 mode, SHDR increases dynamic range from 95.8 dB (SHDR off) to 111.4 dB (SHDR on)-a 15.6 dB improvement-while preserving ±160 µV INL. This eliminates the need for post-processing averaging in many high-fidelity applications, as confirmed in AD4858 Rev. 0 datasheet Table 1 AC Accuracy section.

Can the AD4858BBCZ operate with an external reference instead of the internal 4.096 V reference?

Yes, the AD4858BBCZ supports external reference injection via the REFIO pin. When an external 4.096 V reference is applied, the internal bandgap reference must be disabled using the Device Control Register (bit REF_EN = 0). The REFIO input resistance is 38 kΩ and input capacitance is 10 nF, enabling stable operation with low-noise external references like the ADR4540 or LTC6655-4.096-per AD4858 Rev. 0 datasheet Section "INTERNAL REFERENCE DISABLED" (Page 8).

What digital interface options does the AD4858BBCZ support for data readout?

The AD4858BBCZ supports two independent digital interfaces: a SPI register configuration bus (0.9 V–5.25 V compatible) for setup and control, and a selectable conversion data output bus-either CMOS (1–8 parallel lines, 0.9 V–5.25 V) or LVDS (differential pairs). The LVDS/CMOS pin hardware-selects the data interface mode, and LVDS termination/biasing is configurable via the Device Control Register-details in AD4858 Rev. 0 datasheet Sections "Digital Interface" (Page 41) and "Device Control Register" (Page 63).

AD4858BBCZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 64-LFBGA

Packaging:: Tray

Product Status:: Active

Number of Bits:: 20

Sampling Rate (Per Second):: 1M

Number of Inputs:: 8, 16

Input Type:: Differential, Single Ended

Data Interface:: LVDS, SPI

Configuration:: S/H-ADC

Ratio - S/H:ADC:: 8:8

Number of A/D Converters:: 8

Architecture:: SAR

Reference Type:: External, Internal

Voltage - Supply, Analog:: 4.75V ~ 5.25V

Voltage - Supply, Digital:: 4.75V ~ 5.25V

Features:: Simultaneous Sampling

Operating Temperature:: -40°C ~ 125°C

Supplier Device Package:: 64-BGA (7x7)

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

AD4858BBCZ FAQ

1.How can I place an order for AD4858BBCZ through Aetrix?

Please submit a Request for Quotation (RFQ) for AD4858BBCZ 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 AD4858BBCZ reliable?

The price and inventory of AD4858BBCZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD4858BBCZ is usually 5 days.

3.What payment methods are accepted for AD4858BBCZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD4858BBCZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AD4858BBCZ?

AD4858BBCZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AD4858BBCZ 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 AD4858BBCZ?

For technical support, including AD4858BBCZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD4858BBCZ requirements.

6.How does Aetrix verify that AD4858BBCZ is sourced from the original manufacturer or authorized distributors?

All AD4858BBCZ 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 AD4858BBCZ meets industry standards.

7.What is the process for return or replacement of AD4858BBCZ?

All AD4858BBCZ units undergo pre-shipment inspection (PSI). If there is an issue with AD4858BBCZ, 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 AD4858BBCZ part is unused and in its original packaging.

Return procedure for AD4858BBCZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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