Analog Devices

AD7694BCPZ - 16-Bit 250kSPS PulSAR ADC | Analog Devices

Name: AD7694BCPZ
Brand: Analog Devices
Price: 5.6 USD
Availability: InStock

MPN: AD7694BCPZ ✓ Active

In Stock Ships in 1-3 business days

±VREF Vdss 10-lead LFCSP (CP-10-2) Package Yes Speed

From $5.6 USD / Unit

MOQ: 1 |

Price updated: 2026-08-22

Volume Pricing

Qty	Unit Price	Extended
1	$8.5	$8.50
10	$7.8	$78.00
100	$6.9	$690.00
500	$6.2	$3,100.00
1,000	$5.6	$5,600.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for AD7694BCPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

AD7694BCPZRL7

✅ Drop-In

📦 10-lead LFCSP (CP-10-2)

Same die and package, tape and reel packaging variant

📋 Reference alternative (not in catalog)

ℹ️ 4 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

AD7694BCPZ Maximum Ratings & Electrical Characteristics

Resolution	16 bits
Sampling Rate	250 kSPS
Input Type	Differential
Input Voltage Range	±VREF
Supply Voltage (VDD)	2.7 V to 5.25 V
Reference Voltage (VREF)	2.3 V to VDD
Power Dissipation	4.5 mW typical at 5 V
Interface	SPI-compatible serial
Internal Clock	Yes
No Missing Codes	Yes (B grade)
Operating Temperature Range	-40°C to +85°C
Package	10-lead LFCSP (CP-10-2)
Mounting Type	Surface Mount
RoHS Status	Compliant
MSL Level	3

AD7694BCPZ Pin Configuration

Pin 1	IN+ — Positive analog input
Pin 2	IN- — Negative analog input
Pin 3	GND — Ground
Pin 4	VREF — Reference voltage input
Pin 5	VDD — Power supply
Pin 6	SDI — Serial data input (for daisy-chain)
Pin 7	SDO — Serial data output
Pin 8	SCLK — Serial clock input
Pin 9	CNV — Conversion start input
Pin 10	BUSY — Busy output

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

AD7694BCPZ is suitable for 6 applications: Battery-Powered Instrumentation, Industrial Process Control, Medical Instrumentation, Data Acquisition Systems, Portable Medical Devices, Test and Measurement Equipment.

📱

Battery-Powered Instrumentation

The AD7694BCPZ's low power consumption (4.5 mW at 5 V) and wide supply range (2.7 V to 5.25 V) make it ideal for battery-powered instruments such as handheld multimeters and portable data loggers. Its 16-bit resolution ensures accurate measurements, while the power-down mode extends battery life. The small LFCSP package fits space-constrained designs, and the SPI interface simplifies connection to low-power microcontrollers.

Recommended

ADuCM3029 (Low-power microcontroller with SPI interface) ADP150 (Low-dropout regulator for power supply)

🏭

Industrial Process Control

In industrial process control, the AD7694BCPZ provides 16-bit precision and 250 kSPS sampling for monitoring sensors like pressure, temperature, and flow. Its differential input rejects common-mode noise, and the -40°C to +85°C operating range suits harsh environments. The SPI interface allows easy integration with industrial PLCs and microcontrollers, enabling real-time control loops.

Recommended

ADuCM360 (Precision analog microcontroller with ADC) ADM2587EBRWZ · Analog Devices

💊

Medical Instrumentation

The AD7694BCPZ is suitable for medical devices such as patient monitors and diagnostic equipment, where accurate signal acquisition is critical. Its 16-bit resolution and low noise ensure reliable readings, while the low power consumption is beneficial for portable devices. The small package and SPI interface facilitate compact PCB designs, and the wide supply range accommodates battery operation.

Recommended

AD8232 (ECG front-end for biopotential measurements) ADuCM3029 (Low-power microcontroller for signal processing)

🔧

Data Acquisition Systems

The AD7694BCPZ is a core component in multi-channel data acquisition systems, offering 16-bit resolution and 250 kSPS throughput. Its SPI interface enables daisy-chaining multiple ADCs for synchronized sampling. The internal clock simplifies design, and the differential input allows direct connection to sensors with differential outputs. The low power dissipation is advantageous in high-channel-count systems.

Recommended

ADG5404 (Multiplexer for channel expansion) ADuCM3029 (Microcontroller for data processing)

💊

Portable Medical Devices

For portable medical devices like glucose meters and pulse oximeters, the AD7694BCPZ offers high accuracy with minimal power consumption. Its 16-bit resolution ensures precise measurements, and the power-down mode extends battery life. The compact LFCSP package is ideal for handheld designs, and the SPI interface connects easily to low-power processors.

Recommended

AD8232 (Analog front-end for biosignals) ADP150 (Low-noise LDO for analog supply)

🔧

Test and Measurement Equipment

The AD7694BCPZ is used in test and measurement equipment such as digital multimeters and data loggers, where accuracy and speed are paramount. Its 16-bit resolution and 250 kSPS sampling rate enable precise waveform capture. The differential input and SPI interface provide flexibility in system design, and the wide supply range supports various power architectures.

Recommended

AD8251 (Programmable gain amplifier for signal conditioning) ADuCM3029 (Microcontroller for data acquisition and control)

Recommended Products Summary

ADuCM3029 Low-power microcontroller with SPI interface Used in: Battery-Powered Instrumentation, Medical Instrumentation, Data Acquisition Systems, Test and Measurement Equipment ADP150 Low-dropout regulator for power supply Used in: Battery-Powered Instrumentation, Portable Medical Devices ADuCM360 Precision analog microcontroller with ADC Used in: Industrial Process Control ADM2587EBRWZ Analog Devices Used in: Industrial Process Control AD8232 ECG front-end for biopotential measurements Used in: Medical Instrumentation, Portable Medical Devices ADG5404 Multiplexer for channel expansion Used in: Data Acquisition Systems AD8251 Programmable gain amplifier for signal conditioning Used in: Test and Measurement Equipment

What is the resolution and sampling rate of AD7694BCPZ?

The AD7694BCPZ is a 16-bit ADC with a maximum sampling rate of 250 kSPS. According to the AD7694 datasheet (Rev. B), it uses a charge redistribution successive approximation architecture and operates from a single 2.7 V to 5.25 V supply. This combination of resolution and speed makes it suitable for precision data acquisition applications.

What is the power consumption of AD7694BCPZ?

The AD7694BCPZ consumes approximately 4.5 mW at a 5 V supply and 250 kSPS throughput. In power-down mode, the current drops to less than 1 µA. This low power consumption makes it ideal for battery-powered and portable instrumentation, as stated in the AD7694 datasheet.

What is the input voltage range of AD7694BCPZ?

The AD7694BCPZ accepts a true differential analog input with a peak-to-peak voltage range of ±VREF. The reference voltage (VREF) can range from 2.3 V to VDD. For example, with a 5 V reference, the input range is ±5 V differential. This allows flexible scaling to match various sensor outputs.

What is the interface of AD7694BCPZ?

The AD7694BCPZ features a serial SPI-compatible interface that operates at clock speeds up to 50 MHz. It uses a 3-wire interface (SDI, SDO, SCLK) plus a busy output. The internal conversion clock eliminates the need for an external clock, simplifying the interface to microcontrollers and DSPs.

Is AD7694BCPZ suitable for battery-powered applications?

Yes, the AD7694BCPZ is well-suited for battery-powered applications due to its low power consumption of 4.5 mW at 5 V and a power-down mode that reduces current to under 1 µA. Its small 10-lead LFCSP package and wide supply range (2.7 V to 5.25 V) further enhance its suitability for portable devices.

What is the difference between AD7694BCPZ and AD7690BRMZ?

The AD7694BCPZ and AD7690BRMZ are both 16-bit PulSAR ADCs from Analog Devices, but they differ in package and sampling rate. The AD7694BCPZ is in a 10-lead LFCSP and samples at 250 kSPS, while the AD7690BRMZ is in an 8-lead MSOP and samples at 400 kSPS. The AD7690 also has a different pinout, so they are not drop-in replacements.

Can AD7694BCPZ be used in industrial process control?

Yes, the AD7694BCPZ is suitable for industrial process control due to its 16-bit resolution, 250 kSPS sampling rate, and operating temperature range of -40°C to +85°C. Its differential input helps reject common-mode noise, and the SPI interface simplifies integration with industrial microcontrollers.

What is the best drop-in replacement for AD7694BCPZ?

The AD7694BRMZ is a drop-in replacement for AD7694BCPZ in terms of electrical specifications, but it comes in an 8-lead MSOP package instead of the 10-lead LFCSP. If your PCB is designed for the LFCSP, you would need to adapt the footprint. For a pin-compatible LFCSP alternative, consider the AD7694BCPZRL7 (same die, tape and reel packaging).

Where can I download the AD7694BCPZ datasheet PDF?

The AD7694BCPZ datasheet PDF can be downloaded from the Analog Devices website at https://www.analog.com/media/en/technical-documentation/data-sheets/AD7694.pdf. The datasheet (Rev. B) provides full specifications, pinout, and application information. It is also available on distributor sites like Mouser and DigiKey.

What is the price of AD7694BCPZ?

As of 2026-08-22, the AD7694BCPZ is priced at approximately $8.50 for single-unit quantities, with volume pricing dropping to around $5.60 at 1000 units. Prices may vary by distributor and availability. Check Mouser, DigiKey, or LCSC for current pricing and stock.

Is AD7694BCPZ in stock?

As of 2026-08-22, the AD7694BCPZ is generally available from major distributors like Mouser and DigiKey. However, stock levels can fluctuate. It is recommended to check distributor websites for real-time availability and lead times. The AD7694BRMZ (MSOP version) is also commonly in stock.

What are the key specifications of AD7694BCPZ that engineers should know?

The AD7694BCPZ is a 16-bit, 250 kSPS SAR ADC with a differential input range of ±VREF, operating from a 2.7 V to 5.25 V supply. It features no missing codes (B grade), an internal conversion clock, and an SPI interface up to 50 MHz. Power dissipation is 4.5 mW at 5 V, and it comes in a 10-lead LFCSP package.

What is the lead time for AD7694BCPZ?

The lead time for AD7694BCPZ is typically 4-6 weeks from Analog Devices, but it can vary based on demand and distributor stock. As of 2026-08-22, some distributors may have stock available for immediate shipment. For large orders, it is advisable to contact distributors for accurate lead time estimates.

Is AD7694BCPZ the same as AD7694BRMZ?

No, the AD7694BCPZ and AD7694BRMZ are not the same. They share the same electrical specifications (16-bit, 250 kSPS, PulSAR ADC), but the AD7694BCPZ is in a 10-lead LFCSP package, while the AD7694BRMZ is in an 8-lead MSOP package. The pinouts differ, so they are not pin-compatible.

What is the best Analog Devices equivalent for AD7694BCPZ?

The best Analog Devices equivalent for AD7694BCPZ is the AD7694BRMZ, which has identical electrical specifications but comes in an 8-lead MSOP package. If you need a pin-compatible LFCSP alternative, the AD7694BCPZRL7 (same die, tape and reel) is the closest. For higher speed, consider the AD7690BRMZ (400 kSPS, MSOP).

Engineering reference data for AD7694BCPZ — comparison, design guidance, and compliance information.

Selection Guide

Choose the AD7694BCPZ when you need a 16-bit, 250 kSPS ADC in a small LFCSP package with low power consumption. It is ideal for battery-powered and portable applications. If you prefer an MSOP package, the AD7694BRMZ offers identical electrical specs but requires a different footprint. For higher sampling rates, consider the AD7690BRMZ (400 kSPS) or AD7980BRMZ (1 MSPS), but note their different packages and higher power. The AD7694BCPZRL7 is a drop-in replacement with the same package and specs, differing only in packaging (tape and reel). All alternatives are from Analog Devices, ensuring consistent quality and support.

Comparison with Alternatives

Parameter	This Product	AD7694BCPZRL7	AD7694BRMZ	AD7690BRMZ	AD7980BRMZ
Package	10-lead LFCSP (CP-10-2)	10-lead LFCSP (CP-10-2) - same	8-lead MSOP	8-lead MSOP	10-lead MSOP
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Resolution	16 bits	16 bits	16 bits	16 bits	16 bits
Sampling Rate	250 kSPS	250 kSPS	250 kSPS	400 kSPS	1 MSPS
Input Type	Differential	Differential	Differential	Differential	Differential
Supply Voltage	2.7 V to 5.25 V	2.7 V to 5.25 V	2.7 V to 5.25 V	2.7 V to 5.25 V	2.3 V to 5.5 V
Power Dissipation	4.5 mW at 5 V	4.5 mW at 5 V	4.5 mW at 5 V	4.5 mW at 5 V	7 mW at 5 V
Interface	SPI	SPI	SPI	SPI	SPI

Key Differentiators

Low power consumption (vs AD7980BRMZ)
Small LFCSP package (vs AD7694BRMZ)
Internal conversion clock (vs AD7690BRMZ)

Design Notes

Decouple the VDD pin with a 10 µF ceramic capacitor and a 0.1 µF capacitor placed as close to the pin as possible. The VREF pin should be decoupled with a 1 µF capacitor to ground. A stable, low-noise reference is critical for achieving full 16-bit accuracy; consider using a precision reference like the ADR4550.

Keep the analog input traces short and shielded to minimize noise pickup. Use a solid ground plane under the ADC and avoid routing digital signals near the analog inputs. The exposed pad on the LFCSP package should be soldered to the ground plane for thermal and electrical performance.

Ensure the analog input source impedance is low enough to settle within the acquisition time. The AD7694 has a sampling capacitor that can draw transient currents; a buffer amplifier may be required. Also, avoid exceeding the absolute maximum ratings on the input pins, as this can damage the device.