Application guide

Sensor data acquisition

Explore sensor amplification, analog conversion and reference supplies for measurement instruments.

4 functional blocks8 components for evaluationCompare all parameters ↓

Explore the system

Component building blocks

01Sensor signal conditioning2 components 02Analog data acquisition2 components 03Measurement reference2 components 04Auxiliary power rails2 components

Functional blocks for selection; device connections and component values depend on your design.

FUNCTION / 01

Sensor signal conditioning

Condition low-level differential and sensor signals using instrumentation or zero-drift amplifiers. Check sensor bias, common-mode range and bandwidth.

BIF620 Instrumentation amplifierPackage: SOP-8 BIF8552 Dual-channel zero-drift operational amplifierPackage: SOP-8

FUNCTION / 02

Analog data acquisition

Digitize analog signals using the channel count, resolution, sample rate and interface recorded for each ADC.

BI7606PMC 8-channel, 16-bit ADCPackage: LQFP64 BI1115PMC 4-channel, 16-bit ADC with I²C interfacePackage: MSOP-10

FUNCTION / 03

Measurement reference

Provide a voltage reference for an analog measurement path; select the output voltage and accuracy for the converter design.

BIW584PMC Voltage ReferencesPackage: SOP-8 BIW586PMC Voltage ReferencesPackage: SOP-8

FUNCTION / 04

Auxiliary power rails

Generate local controller and analog rails with step-down conversion and LDO regulation. Match the input range and current to the rail.

BIW54302PMC 28 V input step-down DC/DC converterPackage: TSOT23-6 BIW3042PM1C 200 mA LDO regulatorPackage: DFN-10

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Electrical parameters & cross references

All handbook parameters for the components shown above. Scroll each table horizontally to view every column.

Instrumentation Amplifiers

BI Part Number	Cross Reference	Function	Supply voltage (V)	Input offset voltage (µV)	Input bias current (nA)	Supply current (mA)	Gain bandwidth (MHz)	Slew rate (V/µs)	Package
BIF620	AD620	Instrumentation amplifier	±15	125	28	1.7	0.001	1.2	SOP-8

Zero-drift Operational Amplifiers

BI Part Number	Cross Reference	Function	Channels	Supply voltage (V)	Input offset voltage (µV)	Input bias current (nA)	Supply current (mA)	Gain bandwidth (MHz)	Slew rate (V/µs)	Package
BIF8552	AD8552	Dual-channel zero-drift operational amplifier	2	5.5	15	1	0.58	2	0.8	SOP-8

Analog-to-digital Converters

BI Part Number	Cross Reference	Function	Channels	Resolution (bits)	SNR (dB)	INL	Maximum sample rate (MSPS)	Interface	Package
BI7606PMC	AD7606	8-channel, 16-bit ADC	8	16	92	±1LSB	0.2	SPI, Parallel	LQFP64
BI1115PMC	ADS1115	4-channel, 16-bit ADC with I²C interface	4	16	—	1LSB	0.002	I2C	MSOP-10

Voltage References

BI Part Number	Cross Reference	Function	Reference voltage (V)	Initial accuracy	Input voltage (V)	Output current (A)	Noise	Temperature drift (ppm/°C)	Package
BIW584PMC	AD584	Voltage References	Programmable(10V/7.5V/5V/2.5V)	±0.1%	~40V	±10mA	50µVpp(0.1Hz~10Hz)	10	SOP-8
BIW586PMC	AD586	Voltage References	5	±0.2%	~40V	±10mA	10µVpp(0.1Hz~10Hz)	10	SOP-8

Buck Converters

BI Part Number	Cross Reference	Function	Rectification	Input voltage (V)	Output voltage (V)	Output current (A)	Quiescent current (mA)	Switching frequency (kHz)	Efficiency (%)	Package
BIW54302PMC	—	28 V input step-down DC/DC converter	Synchronous	4.5–28	ADJ(VFB=0.6V)	3	0.14	500	90	TSOT23-6

Low-dropout Regulators

BI Part Number	Cross Reference	Function	Input voltage (V)	Output voltage (V)	Initial accuracy	Output current (A)	Ripple rejection	Quiescent current (mA)	Package
BIW3042PM1C	LT3042	200 mA LDO regulator	~20V	1.5–15	±1%	0.2	92dB@10kHz	4	DFN-10

Selection based on documented BI component functions. Cross references are comparison aids and do not establish drop-in compatibility or transfer another manufacturer’s qualification.