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CS4385-CQZR

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Cirrus Logic Digital To Analog Converters (DACs), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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CS4385-CQZR

Cirrus Logic · Digital To Analog Converters (DACs) · LQFP-48(7x7)

CS4385-CQZR from Cirrus Logic, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 DSDA2 input Direct Stream Digital input for DSD serial audio data, channel A2.
2 DSDB1 input Direct Stream Digital input for DSD serial audio data, channel B1.
3 DSDA1 input Direct Stream Digital input for DSD serial audio data, channel A1.
4 VD power_in Positive digital power supply, 2.37 V to 2.63 V (2.5 V typ) per Recommended Operating Conditions.
5 GND power_in Ground reference, should be connected to analog ground.
6 MCLK input Master clock input for the delta-sigma modulator and digital filters.
7 LRCK input Left/right clock input that determines the active channel on the serial audio data line, at the audio sample rate Fs.
8 SDIN1 input Serial audio data input for two's complement serial audio data.
9 SCLK input Serial clock input for the serial audio interface.
10 M4(TST) input Hardware Mode mode-selection input M4; in Software Mode it is a test pin that must be connected to ground and not left floating.
11 SDIN2 input Serial audio data input for two's complement serial audio data.
12 M3(TST) input Hardware Mode mode-selection input M3; in Software Mode it is a test pin that must be connected to ground and not left floating.
13 SDIN3 input Serial audio data input for two's complement serial audio data.
14 SDIN4 input Serial audio data input for two's complement serial audio data.
15 M2(SCL/CCLK) input Hardware Mode select M2; in Software Mode the serial control port clock, needing an external pull-up to the logic voltage in I2C mode.
16 M1(SDA/CDIN) bidirectional Hardware Mode select M1; in Software Mode SDA is the I2C data I/O line needing an external pull-up, and CDIN is the SPI control data input.
17 M0(AD0/CS) input Hardware Mode select M0; in Software Mode AD0 is the I2C chip address bit 0 and CS is the SPI chip select.
18 VLC power_in Control port power supply setting the control port signal level, 1.71 V to 5.25 V per Recommended Operating Conditions.
19 RST input Reset input; the device enters a low power mode and all internal registers reset to defaults when low.
20 FILT+ output Positive voltage reference for the internal sampling circuits, requiring capacitive decoupling to analog ground.
21 VQ output Internal quiescent voltage filter connection, must be capacitively coupled to analog ground, and any current drawn alters device performance.
22 MUTEC234 output Mute control output that goes high during power-up initialization, reset, muting, power-down or incorrect MCLK to LRCK ratio, for external mute circuits.
23 AOUTB4- output Differential analog output, negative side of channel B4.
24 AOUTB4+ output Differential analog output, positive side of channel B4.
25 AOUTA4+ output Differential analog output, positive side of channel A4.
26 AOUTA4- output Differential analog output, negative side of channel A4.
27 AOUTB3- output Differential analog output, negative side of channel B3.
28 AOUTB3+ output Differential analog output, positive side of channel B3.
29 AOUTA3+ output Differential analog output, positive side of channel A3.
30 AOUTA3- output Differential analog output, negative side of channel A3.
31 GND power_in Ground reference, should be connected to analog ground.
32 VA power_in Positive analog power supply, 4.75 V to 5.25 V (5.0 V typ) per Recommended Operating Conditions.
33 AOUTB2- output Differential analog output, negative side of channel B2.
34 AOUTB2+ output Differential analog output, positive side of channel B2.
35 AOUTA2+ output Differential analog output, positive side of channel A2.
36 AOUTA2- output Differential analog output, negative side of channel A2.
37 AOUTB1- output Differential analog output, negative side of channel B1.
38 AOUTB1+ output Differential analog output, positive side of channel B1.
39 AOUTA1+ output Differential analog output, positive side of channel A1.
40 AOUTA1- output Differential analog output, negative side of channel A1.
41 MUTEC1 output Mute control output that goes high during power-up initialization, reset, muting, power-down or incorrect MCLK to LRCK ratio, for external mute circuits.
42 DSD_SCLK input Serial clock input for the Direct Stream Digital audio interface.
43 VLS power_in Serial audio interface power supply setting the serial port signal level, 1.71 V to 5.25 V per Recommended Operating Conditions.
44 DSDB4 input Direct Stream Digital input for DSD serial audio data, channel B4.
45 DSDA4 input Direct Stream Digital input for DSD serial audio data, channel A4.
46 DSDB3 input Direct Stream Digital input for DSD serial audio data, channel B3.
47 DSDA3 input Direct Stream Digital input for DSD serial audio data, channel A3.
48 DSDB2 input Direct Stream Digital input for DSD serial audio data, channel B2.

Key specifications

Parameter Value
Manufacturer Cirrus Logic
Package LQFP-48(7x7)
Category ADC/DAC/Data Conversion
Pins 48

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Analog power supply (VA) VA 4.75 5 5.25 V GND = 0 V 8
Digital internal power (VD) VD 2.37 2.5 2.63 V GND = 0 V 8
Serial data port interface power (VLS) VLS 1.71 5 5.25 V GND = 0 V 8
Control port interface power (VLC) VLC 1.71 5 5.25 V GND = 0 V 8
Ambient Operating Temperature (Power Applied) TA -40 85 °C Commercial Grade (-CQZ) 8
Analog power (absolute) VA -0.3 6 V GND = 0 V 8
Digital internal power (absolute) VD -0.3 3.2 V GND = 0 V 8
Serial data port interface power (absolute) VLS -0.3 6 V GND = 0 V 8
Control port interface power (absolute) VLC -0.3 6 V GND = 0 V 8
Input Current Any Pin Except Supplies Iin -10 10 mA Printed as ±10 mA 8
Digital Input Voltage, Serial data port interface VIND-S -0.3 V Upper limit printed as VLS+0.4 (not converted) 8
Digital Input Voltage, Control port interface VIND-C -0.3 V Upper limit printed as VLC+0.4 (not converted) 8
Ambient Operating Temperature (Power Applied) Top -55 125 °C 8
Storage Temperature Tstg -65 150 °C 8
Dynamic Range 24-bit A-weighted 108 114 dB Fs = 48 kHz, 96 kHz, 192 kHz and DSD; A-weighted 9
Dynamic Range 24-bit unweighted 105 111 dB Fs = 48 kHz, 96 kHz, 192 kHz and DSD; unweighted 9
Total Harmonic Distortion + Noise 24-bit THD+N -100 dB 24-bit, 0 dB 9
Total Harmonic Distortion + Noise 24-bit THD+N -91 dB 24-bit, -20 dB 9
Total Harmonic Distortion + Noise 24-bit THD+N -51 dB 24-bit, -60 dB 9
Total Harmonic Distortion + Noise 16-bit THD+N -94 dB 16-bit, 0 dB 9
Total Harmonic Distortion + Noise 16-bit THD+N -74 dB 16-bit, -20 dB 9
Total Harmonic Distortion + Noise 16-bit THD+N -34 dB 16-bit, -60 dB 9
Power Supply Current, normal operation IA 84 91 mA normal operation, VA = 5 V 11
Power Supply Current, normal operation ID 20 25 mA normal operation, VD = 2.5 V 11
Power Dissipation, normal operation 470 520 mW VA = 5 V, VD = 2.5 V, normal operation 11
Input Leakage Current Iin -10 10 μA Any pin except supplies; printed as ±10 μA 14
Passband to -0.01 dB corner 0 0.454 Fs Fast roll-off, Single-Speed Mode 48 kHz 12
Passband to -3 dB corner 0 0.499 Fs Fast roll-off, Single-Speed Mode 48 kHz 12
Frequency Response -0.01 0.01 dB Fast roll-off, Single-Speed Mode 48 kHz; 10 Hz to 20 kHz 12
StopBand 0.547 Fs Fast roll-off, Single-Speed Mode 48 kHz 12
StopBand Attenuation 102 dB Fast roll-off, Single-Speed Mode 48 kHz 12
Passband to -0.01 dB corner 0 0.43 Fs Fast roll-off, Double-Speed Mode 96 kHz 12
StopBand 0.583 Fs Fast roll-off, Double-Speed Mode 96 kHz 12
StopBand Attenuation 80 dB Fast roll-off, Double-Speed Mode 96 kHz 12
Passband to -0.01 dB corner 0 0.105 Fs Fast roll-off, Quad-Speed Mode 192 kHz 12
Passband to -3 dB corner 0 0.49 Fs Fast roll-off, Quad-Speed Mode 192 kHz 12
StopBand 0.635 Fs Fast roll-off, Quad-Speed Mode 192 kHz 12
StopBand Attenuation 90 dB Fast roll-off, Quad-Speed Mode 192 kHz 12
Passband to -0.01 dB corner 0 0.417 Fs Slow roll-off, Single-Speed Mode 48 kHz 13
Passband to -3 dB corner 0 0.499 Fs Slow roll-off, Single-Speed Mode 48 kHz 13
Frequency Response -0.01 0.01 dB Slow roll-off, Single-Speed Mode 48 kHz; 10 Hz to 20 kHz 13
StopBand 0.583 Fs Slow roll-off, Single-Speed Mode 48 kHz 13
StopBand Attenuation 64 dB Slow roll-off, Single-Speed Mode 48 kHz 13
Passband to -0.01 dB corner 0 0.296 Fs Slow roll-off, Double-Speed Mode 96 kHz 13
StopBand 0.792 Fs Slow roll-off, Double-Speed Mode 96 kHz 13
StopBand Attenuation 70 dB Slow roll-off, Double-Speed Mode 96 kHz 13
Passband to -0.01 dB corner 0 0.104 Fs Slow roll-off, Quad-Speed Mode 192 kHz 13
Passband to -3 dB corner 0 0.481 Fs Slow roll-off, Quad-Speed Mode 192 kHz 13
StopBand 0.868 Fs Slow roll-off, Quad-Speed Mode 192 kHz 13
StopBand Attenuation 75 dB Slow roll-off, Quad-Speed Mode 192 kHz 13
Package Thermal Resistance, multi-layer θJA 48 °C/Watt multi-layer board 11
Package Thermal Resistance, dual-layer θJA 65 °C/Watt dual-layer board 11
Package Thermal Resistance, junction-to-case θJC 15 °C/Watt 11

CAD (KiCad official)

  • Symbol: CS4385-CQZR
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: cs4385-cqzr-etched.step / cs4385-cqzr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cs4385-cqzr.step / cs4385-cqzr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Cirrus Logic datasheet (55 pp, sha256 4ddd535a987d5608, retrieved 2026-10-28, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF