AD7091R-8 Series

4-Channel, I2C, Ultralow Power 12-Bit ADC in 20-Lead LFCSP/TSSOP

Catalog

4-Channel, I2C, Ultralow Power 12-Bit ADC in 20-Lead LFCSP/TSSOP

Part	Supplier Device Package	Number of A/D Converters	Operating Temperature [Max]	Operating Temperature [Min]	Input Type	Ratio - S/H:ADC	Number of Inputs	Package / Case	Number of Bits	Data Interface	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Mounting Type	Reference Type	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Architecture	Sampling Rate (Per Second)	Configuration	Package / Case [y]	Package / Case [x]	Package / Case	Package / Case [x]	Package / Case [x]
Analog Devices AD7091R-2BCPZ	16-LFCSP-WQ (4x4)	1	125 °C	-40 °C	Single Ended	1:1	2	16-WQFN Exposed Pad CSP	12 bits	DSP SPI	5.25 V	2.09 V	Surface Mount	External Internal	2.09 V	5.25 V	SAR	1 M	S/H-ADC
Analog Devices AD7091R-8BCPZ	24-LFCSP (4x4)	1	125 °C	-40 °C	Single Ended	1:1	8	24-WFQFN Exposed Pad CSP	12 bits	DSP SPI	5.25 V	2.09 V	Surface Mount	External Internal	2.09 V	5.25 V	SAR	1 M	S/H-ADC
Analog Devices AD7091R-5BRUZ	20-TSSOP	1	125 °C	-40 °C	Single Ended	1:1	4	20-TSSOP	12 bits	I2C	5.25 V	2.7 V	Surface Mount	External Internal	2.7 V	5.25 V	SAR	22.22 k per second	MUX-S/H-ADC	4.4 mm	0.173 in
Analog Devices AD7091R-5BCPZ-RL7	20-LFCSP (4x4)	1	125 °C	-40 °C	Single Ended	1:1	4	20-WFQFN Exposed Pad CSP	12 bits	I2C	5.25 V	2.7 V	Surface Mount	External Internal	2.7 V	5.25 V	SAR	22.22 k per second	MUX-S/H-ADC
Analog Devices AD7091RBCPZ-RL	10-LFCSP-WD (3x2)	1	125 °C	-40 °C	Single Ended	1:1	1	10-WFDFN Exposed Pad CSP	12 bits	DSP SPI	5.25 V	2.09 V	Surface Mount	External Internal	2.09 V	5.25 V	SAR	1 M	S/H-ADC
Analog Devices AD7091R-8BRUZ	24-TSSOP	1	125 °C	-40 °C	Single Ended	1:1	8	24-TSSOP	12 bits	DSP SPI	5.25 V	2.09 V	Surface Mount	External Internal	2.09 V	5.25 V	SAR	1 M	S/H-ADC			0.173 in 4.4 mm
Analog Devices AD7091RBRMZ-RL7	10-MSOP	1	125 °C	-40 °C	Single Ended	1:1	1	10-MSOP 10-TFSOP	12 bits	DSP SPI	5.25 V	2.09 V	Surface Mount	External Internal	2.09 V	5.25 V	SAR	1 M	S/H-ADC				3 mm	0.118 in
Analog Devices AD7091R-5BCPZ	20-LFCSP (4x4)	1	125 °C	-40 °C	Single Ended	1:1	4	20-WFQFN Exposed Pad CSP	12 bits	I2C	5.25 V	2.7 V	Surface Mount	External Internal	2.7 V	5.25 V	SAR	22.22 k per second	MUX-S/H-ADC
Analog Devices AD7091R-4BCPZ	20-LFCSP (4x4)	1	125 °C	-40 °C	Single Ended	1:1	4	20-WFQFN Exposed Pad CSP	12 bits	DSP SPI	5.25 V	2.09 V	Surface Mount	External Internal	2.09 V	5.25 V	SAR	1 M	S/H-ADC
Analog Devices AD7091R-4BRUZ-RL7	20-TSSOP	1	125 °C	-40 °C	Single Ended	1:1	4	20-TSSOP	12 bits	DSP SPI	5.25 V	2.09 V	Surface Mount	External Internal	2.09 V	5.25 V	SAR	1 M	S/H-ADC	4.4 mm	0.173 in

Catalog

4-Channel, I2C, Ultralow Power 12-Bit ADC in 20-Lead LFCSP/TSSOP

Key Features

• I2C-compatible serial interface supports standard and fast modes

• Ultralow power: 90 μW typical at 3 V in fast mode

• Specified for VDD of 2.7 V to 5.25 V

• On-chip accurate 2.5 V reference, 5 ppm/°C typical drift

• 4 single-ended analog input channels

• ALERT function

• BUSY function

• Autocycle mode

• Wide input bandwidth68 dB signal-to-noise ratio (SNR) typical at input frequency of 1 kHz

• 68 dB signal-to-noise ratio (SNR) typical at input frequency of 1 kHz

• Flexible power/throughput rate management

• No pipeline delays

• Power-down mode550 nA typical at VDD = 5.25 V435 nA typical at VDD = 3 V

• 550 nA typical at VDD = 5.25 V

• 435 nA typical at VDD = 3 V

• 20-lead LFCSP and TSSOP packages

• Temperature range: −40°C to +125°C

Description

TheAD7091R-2/AD7091R-4/ AD7091R-8 family is a multichannel 12-bit, ultralow power, successive approximation analog-to-digital converter (ADC) that is available in two, four, or eight analog input channel options. The AD7091R-2 / AD7091R-4 / AD7091R-8 operate from a single 2.7 V to 5.25 V power supply and are capable of achieving a sampling rate of 1 MSPS.The AD7091R-2 / AD7091R-4 / AD7091R-8 family offers up to eight single-ended analog input channels with a channel sequencer that allows a preprogrammed selection of channels to be converted sequentially. The AD7091R-2 / AD7091R-4 / AD7091R-8 also feature an on-chip conversion clock, an on-chip accurate 2.5 V reference, and a high speed serial interface.The AD7091R-2 / AD7091R-4 / AD7091R-8 have a serial port interface (SPI) that allows data to be read after the conversion while achieving a 1 MSPS throughput rate. The conversion process and data acquisition are controlled using theCONVSTpin.The AD7091R-2 / AD7091R-4 / AD7091R-8 use advanced design techniques to achieve ultralow power dissipation at high throughput rates. They also feature flexible power management options. An on-chip configuration register allows the user to set up different operating conditions. These include power management, alert functionality, busy indication, channel sequencing, and general-purpose output pins. The MUXOUTand ADCINpins allow signal conditioning of the multiplexer output prior to acquisition by the ADC.ApplicationsBattery powered systemsPersonal digital assistantsMedical instrumentsMobile communicationsInstrumentation and control systemsData acquisition systemsOptical sensorsDiagnostic/monitoring functions