CS5534-BSZ - 24-Bit Sigma-Delta ADC with PGIA | Cirrus Logic
MPN: CS5534-BSZ ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
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Drop-in alternatives for CS5534-BSZ — 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:
CS5534-ASZR
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →CS5534-ASZR
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →CS5532-BSZ
✅ Drop-In✓ In Stock
$4.03 / Unit
View Datasheet →CS5532-ASZ
✅ Drop-In✓ In Stock
$9.85 / Unit
View Datasheet →CS5530-ISZ
✅ Drop-In📋 Reference alternative (not in catalog)
CS5534-BSZ Maximum Ratings & Electrical Characteristics
| Resolution | 24 bit |
| Number of Input Channels | 4 differential inputs |
| Conversion Type | Sigma-Delta (charge-balance) |
| Sampling Rate | 3.84 kSPS |
| Analog Input Type | Differential |
| Integrated Amplifier | Ultra-low-noise PGIA |
| Interface | Serial, 3-wire (SPI-compatible) |
| Supply Voltage Range | 2.375 V to 5 V (single or dual supply) |
| Supply Current | 13 mA |
| Package | 24-SSOP (0.209 in, 5.30 mm width) |
| Contact Plating | Matte tin |
| Mounting Type | Surface Mount |
| Target Applications | Weigh scale, process control, scientific, medical |
| Signal Type | Low-level unipolar or bipolar |
| Manufacturer Series | CS5532/CS5534 |
CS5534-BSZ 24-ssop (0.209 in, 5.30 mm width) Pin Configuration Guide
Complete pinout information for CS5534-BSZ (24-ssop (0.209 in, 5.30 mm width) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for CS5534-BSZ.
Refer to the datasheet for full pin configuration.
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
CS5534-BSZ is suitable for 6 applications: Weigh Scale Systems, Process Control Transmitters, Scientific Instrumentation, Medical Diagnostic Equipment, Industrial Data Acquisition Modules, Bridge Sensor and Load Cell Front Ends.
Weigh Scale Systems
The CS5534-BSZ is explicitly optimized by Cirrus Logic for weigh scale applications, where load-cell bridge outputs of only a few millivolts full-scale must be resolved to 24-bit precision. The integrated ultra-low-noise PGIA provides programmable gain directly at the converter input, eliminating a separate instrumentation amplifier stage and its associated offset drift between the load cell and the ADC. Placed immediately after the bridge with a stable reference, the charge-balance delta-sigma architecture rejects line-frequency noise when conversion timing is synchronized to the mains period, improving weigh stability. The 3.84 kSPS output rate is far faster than mechanical weighing dynamics, enabling digital filtering and averaging for repeatable results in retail, industrial, and laboratory scales.
Recommended
Process Control Transmitters
In process control, low-level bipolar signals from RTDs, thermocouples, and pressure transducers must be digitized accurately in electrically noisy factory environments. The CS5534-BSZ fits because its 24-bit resolution, differential inputs, and ultra-low-noise PGIA preserve microvolt-level signal information, while the 2.375V to 5V single or dual supply operation at 13 mA integrates easily into 4-20 mA loop-powered and 24 V field architectures via simple front-end conditioning. The four differential channels allow one device to monitor multiple sensor points sequentially, reducing cost per channel. According to Cirrus Logic, this family is specifically targeted at process control, and its charge-balance conversion provides strong normal-mode noise rejection at the low conversion rates typical of process variables such as temperature and pressure.
Recommended
Scientific Instrumentation
Scientific instruments - spectrometers, electrometers, and precision measurement benches - require ADCs whose noise floor does not mask the phenomena under study. The CS5534-BSZ addresses this with 24-bit charge-balance delta-sigma conversion and an integrated ultra-low-noise PGIA, letting experimenters digitize low-level unipolar or bipolar sensor outputs directly. Its 3.84 kSPS rate suits quasi-static measurements where resolution matters more than bandwidth, and the SPI-compatible 3-wire serial interface connects cleanly to microcontrollers and FPGAs without parallel bus complexity. Because the four differential channels share one converter core, channel-to-channel matching is consistent for comparative experiments. Using low-noise linear supplies and a precision voltage reference preserves the converter's datasheet-level noise performance in the final instrument.
Recommended
Medical Diagnostic Equipment
Medical instrumentation such as patient monitors, diagnostic analyzers, and biosignal acquisition boards measures very small differential signals where safety, accuracy, and low noise are regulated requirements. The CS5534-BSZ is cited by Cirrus Logic and distributors (KATY, WIN SOURCE) as targeting medical applications, thanks to its 24-bit resolution, integrated low-noise PGIA, and differential input architecture that rejects common-mode interference from mains-coupled environments. The 2.375V to 5V supply range and 13 mA consumption support battery-powered and low-power portable designs, extending operating time between charges. Its 3.84 kSPS maximum rate comfortably covers physiological signal bandwidths after digital decimation, while four input channels allow multi-parameter acquisition - for example, temperature plus pressure sensing - in a single converter.
Recommended
Industrial Data Acquisition Modules
Multi-channel industrial DAQ modules benefit directly from the CS5534-BSZ's four differential inputs on a single 24-SSOP die: one converter, one SPI port, and one reference serve multiple sensors, cutting board area and BOM cost versus per-channel solutions. The ultra-low-noise PGIA accepts programmable gain settings so thermocouples, bridge sensors, and low-level analog signals with different amplitudes share the same hardware channel bank. Operating from a 2.375V to 5V supply at 13 mA, the device fits isolated front-end designs where power budgets are constrained. The SPI-compatible 3-wire interface isolates cleanly with standard digital isolators for ground-loop immunity. Channel scanning at up to 3.84 kSPS supports vibration, weight, and process monitoring within one module footprint.
Recommended
Bridge Sensor and Load Cell Front Ends
Bridge-based sensors - load cells, strain gauges, and pressure transducers - produce full-scale outputs in the low millivolt range, demanding both gain and resolution from the digitizer. The CS5534-BSZ integrates an ultra-low-noise programmable gain instrumentation amplifier ahead of the 24-bit delta-sigma modulator, so the bridge output connects with minimal external circuitry and without the offset and drift penalties of a discrete amplifier chain. Differential inputs reject common-mode noise on long cable runs typical of industrial installations. Conversion timing can be aligned with power-line periods to null 50/60 Hz interference, a major error source for bridge systems. The 13 mA supply current and 2.375V to 5V operation suit both bench instruments and embedded sensing nodes.
Recommended
Recommended Products Summary
Engineering reference data for CS5534-BSZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CS5534-ASZ | CS5532-BSZ | CS5532-ASZ |
|---|---|---|---|---|
| Package | 24-SSOP | 24-SSOP (0.209 in, 5.30 mm) - same | 24-SSOP - same | 24-SSOP - same |
| Brand | Cirrus Logic | Cirrus Logic | Cirrus Logic | Cirrus Logic |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit |
| Input Channels | 4 differential | 4 differential | 2 differential | 2 differential |
| Sampling Rate | 3.84 kSPS | 3.84 kSPS | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage Range | 2.375 V to 5 V | 2.375 V to 5 V | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Current | 13 mA | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Integrated PGIA | Yes (ultra-low-noise) | Yes | Yes | Yes |
| Interface | 3-wire serial (SPI-compatible) | 3-wire serial | 3-wire serial | 3-wire serial |
Key Differentiators
- Four differential channels on one converter (vs CS5532-BSZ)
- Integrated ultra-low-noise PGIA (vs ADS124S08)
- Wide 2.375V-5V supply range (vs CS5530-ISZ)
Design Notes
The CS5534-BSZ operates from 2.375V to 5V and draws about 13 mA. Because achieved resolution is dominated by supply and reference cleanliness rather than the converter itself, power the analog supply from a low-noise LDO (not a switching rail directly) and use a precision low-noise voltage reference. Decouple VA+ and VD close to the pins with 0.1 uF ceramics plus bulk 10 uF. Estimated: at 5 V and 13 mA the device dissipates only about 65 mW, so no thermal design effort is required for the 24-SSOP package.
Keep the differential input traces to the PGIA short, symmetrical, and guarded by ground to preserve the ultra-low-noise performance. Place an RC anti-alias filter ahead of the inputs; the 3.84 kSPS output rate still oversamples internally, but out-of-band interference can fold into the passband. Route the SPI 3-wire clock away from analog inputs, and synchronize conversion timing to the 50/60 Hz mains period to exploit the charge-balance architecture's line-noise rejection.
Substitution risk: modern 24-bit ADCs (ADS124S08, AD7124-8, MAX11254) are NOT drop-in replacements for the CS5534-BSZ despite better parametrics - pinout, package, and command protocol all differ, per cross-reference analysis. Stay within the CS5532/34 family (CS5534-ASZ, CS5532-BSZ) for same-footprint substitution. Also verify grade suffixes (AS vs BS, Z plating designation) against procurement documents, as distributor comparisons show these suffixes differ in plating/package description details.
Compliance Information
Matte tin contact plating reported in distributor parametric data. RoHS/REACH status not explicitly stated in provided web data - verify on DigiKey/Mouser product pages.
