AD7265 Series

Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC

Manufacturer: Analog Devices Inc./Maxim Integrated

Catalog

Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC

Part	Supplied Contents	Contents	Number of Bits	Sampling Rate (Per Second)	Number of A/D Converters	Data Interface	Input Voltage (Min)	Input Voltage (Max)	Power (Typ)	Utilized IC / Part	Ratio - ADC	Ratio - S/H	Reference Type	Operating Temperature (Max)	Operating Temperature (Min)	Features	Configuration	Input Type	Mounting Type	Package Width	Package Name	Package Length	Voltage - Supply, Analog (Max)	Voltage - Supply, Analog (Min)	Architecture	Package / Case	Voltage - Supply, Digital (Min)	Voltage - Supply, Digital (Max)	Number of Inputs
Analog Devices Inc./Maxim Integrated EVAL-AD7265EDZ	Board(s)	Board	12 bits	1 MHz	2 count	DSP SPI	0 mV	5 V	7 mW 17 mW	AD7265
Analog Devices Inc./Maxim Integrated AD7265BSUZ			12 bits	1 MHz	2 count	DSP SPI					1	1	External Internal	125 °C	-40 °C	Simultaneous Sampling	MUX-S/H-ADC	Differential Pseudo-Differential Single Ended	Surface Mount	7 mm	32-TQFP	7 mm	5.25 V	2.7 V	SAR	32-TQFP	2.7 V	5.25 V	12 6
Analog Devices Inc./Maxim Integrated AD7265BCPZ-REEL			12 bits	1 MHz	2 count	DSP SPI					1	1	External Internal	125 °C	-40 °C	Simultaneous Sampling	MUX-S/H-ADC	Differential Pseudo-Differential Single Ended	Surface Mount	5 mm	32-LFCSP-VQ	5 mm	5.25 V	2.7 V	SAR	32-VFQFN Exposed Pad CSP	2.7 V	5.25 V	12 6
Analog Devices Inc./Maxim Integrated AD7265BSUZ-REEL7			12 bits	1 MHz	2 count	DSP SPI					1	1	External Internal	125 °C	-40 °C	Simultaneous Sampling	MUX-S/H-ADC	Differential Pseudo-Differential Single Ended	Surface Mount	7 mm	32-TQFP	7 mm	5.25 V	2.7 V	SAR	32-TQFP	2.7 V	5.25 V	12 6
Analog Devices Inc./Maxim Integrated AD7265BCPZ-REEL7			12 bits	1 MHz	2 count	DSP SPI					1	1	External Internal	125 °C	-40 °C	Simultaneous Sampling	MUX-S/H-ADC	Differential Pseudo-Differential Single Ended	Surface Mount	5 mm	32-LFCSP-VQ	5 mm	5.25 V	2.7 V	SAR	32-VFQFN Exposed Pad CSP	2.7 V	5.25 V	12 6
Analog Devices Inc./Maxim Integrated AD7265BSUZ-REEL			12 bits	1 MHz	2 count	DSP SPI					1	1	External Internal	125 °C	-40 °C	Simultaneous Sampling	MUX-S/H-ADC	Differential Pseudo-Differential Single Ended	Surface Mount	7 mm	32-TQFP	7 mm	5.25 V	2.7 V	SAR	32-TQFP	2.7 V	5.25 V	12 6
Analog Devices Inc./Maxim Integrated AD7265BCPZ			12 bits	1 MHz	2 count	DSP SPI					1	1	External Internal	125 °C	-40 °C	Simultaneous Sampling	MUX-S/H-ADC	Differential Pseudo-Differential Single Ended	Surface Mount	5 mm	32-LFCSP-VQ	5 mm	5.25 V	2.7 V	SAR	32-VFQFN Exposed Pad CSP	2.7 V	5.25 V	12 6

Description

The AD7265 is a dual, 12-bit, high speed, low power, successive approximation ADC that operates from a single 2.7 V to 5.25 V power supply and features throughput rates of up to 1 MSPS. The device contains two ADCs, each preceded by a 3-channel multiplexer, and a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 30 MHz.The conversion process and data acquisition use standard control inputs allowing easy interfacing to microprocessors or DSPs. The input signal is sampled on the falling edge ofCS; conversion is also initiated at this point. The conversion time is determined by the SCLK frequency. The AD7265 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With 5 V supplies and a 1 MSPS throughput rate, the part consumes 4 mA maximum. The part also offers flexible power/throughput rate management when operating in normal mode, because the quiescent current consumption is so low.The analog input range for the part can be selected to be a 0 V to VREF(or 2 × VREF) range, with either straight binary or twos complement output coding. The AD7265 has an on-chip 2.5 V reference that can be overdriven when an external reference is preferred. This external reference range is 100 mV to VDD. The AD7265 is available in 32-lead LFCSP and 32-lead TQFP.PRODUCT HIGHLIGHTSTwo Complete ADC Functions Allow Simultaneous Sampling and Conversion of Two Channels.Each ADC has three fully/pseudo differential pairs, or six single-ended channels, as programmed. The conversion result of both channels is simultaneously available on separate data lines, or in succession on one data line if only one serial port is available.High Throughput with Low Power Consumption.The AD7265 offers a 1 MSPS throughput rate with 9 mW maximum power dissipation when operating at 3 V.The AD7265 offers both a standard 0 V to VREFinput range and a 2 × VREFinput range.No Pipeline Delay.The part features two standard successive approximation ADCs with accurate control of the sampling instant via aCSinput and once off conversion control.