الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > الدوائر المتكاملة الخطية التناظرية > AD7541AKNZ

AD7541AKNZ

12-bit multiplying CMOS DAC, R-2R, 4-quadrant, 0.6µs settling, 18-pin PDIP

2340

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جزء الشركة المصنعة ： جزء الشركة المصنعة

AD7541AKNZ

الحزمة ： الحزمة

PDIP-18 (22.86 x 6.35 x 3.3mm, through-hole)

العلامة التجارية ： العلامة التجارية

فئات المنتجات:：فئات المنتجات

الدوائر المتكاملة الخطية التناظرية, الدوائر المتكاملة الدوائر المتكاملة

توصيات أخرى قد تكون مهتماً بها.

SII9396SCNUC-BAR

IS43TR16256BL-125KBLI

الوصف

نظرة عامة على المنتج

The AD7541AKNZ is a 12-bit monolithic multiplying CMOS DAC from Analog Devices with R-2R ladder architecture, 12-bit linearity, TTL/CMOS compatible inputs, and 0.6µs settling time in an 18-pin PDIP package.

المواصفات الرئيسية

Resolution	12 bits
Architecture	R-2R ladder, current output
Linearity (K-grade)	±0.012% of FSR (±1/2 LSB)
Settling Time	0.6 µs to 0.1% of FSR (max)
Gain Error	±3 LSB max at 25°C (K-grade)
جهد الإمداد	+5V to +15V
تبديد الطاقة	20 mW typical
Input Resistance	10 kΩ typical (R-2R network)
Reference Input Range	-10V to +10V
Multiplication	4-quadrant
Data Interface	Parallel (12-bit)
درجة حرارة التشغيل	0°C to +70°C
الحزمة	18-pin PDIP (through-hole)

الميزات

12-bit linearity with endpoint accuracy (±1/2 LSB for K-grade)
Full 4-quadrant multiplication capability
All parts guaranteed monotonic to 12 bits
TTL/CMOS compatible digital inputs
Latch-up free design (no protection Schottky diodes needed)
Low logic input leakage current: ±1µA max
Low power dissipation: 20mW typical
Internal feedback resistor for easy output amplifier connection

التطبيقات

Waveform generators and function generators
Programmable amplifiers and attenuators
Digitally controlled calibration circuits
Programmable filters and oscillators
Analog signal processing and instrumentation

مقدمة المنتج:AD7541AKNZ مقدمة المنتج

The AD7541AKNZ is a 12-bit monolithic multiplying digital-to-analog converter from Analog Devices using a thin-film R-2R ladder network on CMOS. The K-grade provides the highest accuracy with ±1/2 LSB integral nonlinearity and ±3 LSB gain error at 25°C. The device supports full 4-quadrant multiplication when used with an external operational amplifier, allowing the analog output to be scaled by both the digital code and the reference voltage polarity. The 0.6µs settling time enables high-speed signal generation. The internal RFEEDBACK resistor simplifies output amplifier connection by matching the R-2R ladder resistance. The latch-up free CMOS design eliminates the need for external protection Schottky diodes that were required on the original AD7541.

مبدأ العمل:AD7541AKNZ مبدأ العمل

The AD7541AKNZ uses a 12-bit R-2R thin-film resistor ladder network with NMOS SPDT switches to implement the DAC function. Each bit of the 12-bit digital input controls a switch that connects the corresponding ladder node to either the IOUT1 bus (bit=1) or the IOUT2 bus (bit=0). The current flowing through each ladder arm is weighted by the R-2R network: the MSB carries half the total current, and each subsequent bit carries half the previous. The total output current at IOUT1 is the sum of all selected weighted currents, proportional to the digital input code and the reference voltage. For unipolar operation, the IOUT1 pin connects to the inverting input of an external op-amp, and the internal RFEEDBACK resistor (matched to the 10kΩ ladder resistance) provides the feedback path. For 4-quadrant multiplication, both IOUT1 and IOUT2 connect to op-amps in a bipolar configuration, allowing the reference voltage to be either polarity. The thin-film resistors are laser-trimmed at wafer level to achieve the ±1/2 LSB linearity of the K-grade. The low 20mW power dissipation results from the CMOS switches consuming almost no static power.

وصف الدبوس:AD7541AKNZ تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوصف
1-4	BIT 1-4	المدخلات الرقمية	MSB through bit 4 (TTL/CMOS)
5	VREF IN	Analog Input	Reference voltage input (-10V to +10V)
6	IOUT2	Analog Output	Complementary current output (connect to GND or op-amp)
7	IOUT1	Analog Output	Main current output (connect to op-amp inverting input)
8	GND	الطاقة	أرضي
9	BIT 5	المدخلات الرقمية	Bit 5 data input
10-12	BIT 6-8	المدخلات الرقمية	Bits 6 through 8
13-16	BIT 9-12	المدخلات الرقمية	Bits 9 through 12 (LSB)
17	RFEEDBACK	Analog Output	Internal feedback resistor (connect to op-amp output)
18	V+	الطاقة	Positive supply (+5V to +15V)

Application Scenarios:In which products and applications isAD7541AKNZ مستعمل

Waveform Generation: 4-quadrant multiplication and 0.6µs settling enable arbitrary waveform synthesis with positive and negative reference
Programmable Gain: Digital code controls the gain applied to the VREF input, implementing digitally programmable amplifiers/attenuators
Calibration Circuits: 12-bit monotonicity and ±1/2 LSB linearity provide precise digital trim for offset and gain calibration
Programmable Filters: Multiplying capability allows real-time filter coefficient adjustment by changing the digital input code
Instrumentation: R-2R ladder provides well-defined output impedance; internal RFEEDBACK simplifies op-amp interface

Alternative Models:What chips are recommended as replacements for AD7541AKNZ

الطراز	الشركة المصنعة	الفرق الرئيسي	الحزمة	Specs
AD7541AJNZ	ADI	J-grade, ±1 LSB linearity, lower cost	-	-
AD7541AKRZ	ADI	K-grade in 18-pin SOIC (surface mount)	-	-
AD7537KNZ	ADI	Dual 12-bit DAC, 24-pin DIP	-	-
DAC7541AGL	TI	12-bit, voltage output, SOIC-16	-	-
MCP4922-E/P	الرقاقة الدقيقة	Dual 12-bit, SPI, PDIP-14	-	-