الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > الدوائر المتكاملة الخطية التناظرية > MCP4922-E/SL

MCP4922-E/SL

Dual 12-bit DAC, SPI, 2.7-5.5V, 4.5us settling, SOIC-14, AEC-Q100

6368

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جزء الشركة المصنعة ： جزء الشركة المصنعة

MCP4922-E/SL

الحزمة ： الحزمة

SOIC-14 (8.65 x 3.9 x 1.5 mm)

الوصف

نظرة عامة على المنتج

The MCP4922-E/SL from Microchip Technology is a dual-channel 12-bit voltage output Digital-to-Analog Converter (DAC) with SPI interface and external voltage reference. Operating from 2.7V to 5.5V with 350 uA typical current consumption and 4.5 us settling time, it is available in a 14-pin SOIC package rated for extended temperature (-40C to +125C) and AEC-Q100 Grade 1 qualified.

المواصفات الرئيسية

Resolution	12-bit
القنوات	2 (Dual)
الواجهة	SPI (up to 20 MHz)
جهد الإمداد	2.7V to 5.5V
Output Settling Time	4.5 us
INL (typ)	+/-2 LSB
DNL (max)	+/-0.75 LSB
Operating Current	350 uA typical
الحزمة	SOIC-14 (8.65 x 3.9 mm)
درجة حرارة التشغيل	-40C to +125C

الميزات

12-bit resolution with dual channel output
External voltage reference input (VREF)
Fast settling time: 4.5 us
SPI interface up to 20 MHz clock
AEC-Q100 Grade 1 qualified for automotive
Shutdown mode reduces current to 0.1 uA

التطبيقات

Set point and offset adjustment
Sensor calibration and trimming
Motor speed control references
Audio volume and gain control

مقدمة المنتج:MCP4922-E/SL مقدمة المنتج

The MCP4922-E/SL from Microchip Technology is a dual-channel 12-bit voltage output DAC with an SPI interface and external voltage reference pin. It provides high accuracy with INL of +/-2 LSB typical and DNL of +/-0.75 LSB maximum. The device operates from 2.7V to 5.5V with typical current consumption of 350 uA, making it suitable for both portable and industrial applications. The SPI interface supports clock rates up to 20 MHz for fast data loading. AEC-Q100 Grade 1 qualification makes it suitable for automotive applications. An optional shutdown mode reduces power consumption to 0.1 uA for battery-powered designs.

مبدأ العمل:MCP4922-E/SL مبدأ العمل

The MCP4922-E/SL uses a resistor-string DAC architecture with an output buffer amplifier. The 12-bit digital input code selects a tap point on the resistor string, which is buffered to produce the analog output voltage. The output voltage is determined by: VOUT = VREF * (D / 4096) * (2 * GAIN), where D is the 12-bit digital code (0-4095) and GAIN is selectable as 1x or 2x via the SPI command. The external VREF pin allows the output range to be set independently of the supply voltage. The SPI interface loads a 16-bit command word containing channel select, output gain, shutdown control, and 12-bit data. Both DAC channels share the same VREF input.

وصف الدبوس:MCP4922-E/SL تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوظيفة
1	VDD	الطاقة	Supply voltage 2.7-5.5V
2	CS#	المدخلات	SPI chip select (active low)
3	SCK	المدخلات	SPI clock input
4	SDI	المدخلات	SPI serial data input
5	LDAC#	المدخلات	Latch DAC input (active low, for simultaneous update)
6	SHDN#	المدخلات	Hardware shutdown (active low)
7	VOUTB	المخرجات	DAC channel B analog output
8	AVSS	أرضي	Analog ground
9	VREF	المدخلات	External voltage reference input
10	VOUTA	المخرجات	DAC channel A analog output
11	SDO	المخرجات	SPI serial data output (daisy-chain)

Application Scenarios:In which products and applications isMCP4922-E/SL مستعمل

Set point and offset adjustment in industrial control
Sensor calibration and trimming circuits
Motor speed and torque control voltage references
Audio volume, balance, and gain control
Automotive actuator position control

Alternative Models:What chips are recommended as replacements for MCP4922-E/SL

الشركة المصنعة	رقم الجزء	الحزمة	الملاحظات
الرقاقة الدقيقة	MCP4922-E/P	PDIP-14	Through-hole version
الرقاقة الدقيقة	MCP4922-E/ST	TSSOP-14	Smaller TSSOP package
الرقاقة الدقيقة	MCP4912-E/SL	SOIC-14	10-bit resolution, lower cost
الرقاقة الدقيقة	MCP4902-E/SL	SOIC-14	8-bit resolution, lowest cost
TI	DAC7513E/2K5	SOT-23-6	Single 12-bit DAC, smaller package