AD7918BRUZ - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7918BRUZ
Manufacturer

ADI
ChipWorker Part#

CW236039
Category

Analog to Digital, ADC IC
Package

TSSOP-20
Description

ANALOG DEVICES AD7918BRUZ Analog to Digital Converter, 10Bit, 1MSPS, Single, 2.7V, 5.25V, TSSOP
Documentation

Datasheet

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AD7918BRUZ Specifications

Attribute	Attribute Value

Part Number	AD7918BRUZ
Manufacturer	ADI
ChipWorker Part#	CW236039
Category	Analog to Digital, ADC IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	20 Pin
Case/Package	TSSOP-20
Digital Logic Level	SAR
Supply Voltage (DC)	2.70V (min)
Supply Current	600 µA
Number of Circuits	1 Circuit
Number of Channels	8 Channel
Number of Positions	20 Position
Number of Bits	10 Bit
Power Dissipation	13.5 mW
Sample Rate	1 Msps
Resolution (Bits)	10.0 Bit
Input Capacitance	20.0 pF
Number of ADCs	1 ADC
Number of Inputs	8 Input
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	13.5 mW
Number of Input Channels	8 Channel
Supply Voltage (Max)	5.25 V
Supply Voltage (Min)	2.7 V
Input Voltage	2.5V, 5V
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Size-Length	6.5 mm
Size-Width	4.4 mm
Size-Height	1.05 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
Mil-Spec	No
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99

Product Description

Product Details
The AD7908/AD7918/AD7928 are, respectively, 8-bit, 10-bit, and 12-bit, high speed, low power, 8-channel, successive approximation ADCs. The parts operate from a single 2.7 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 8 MHz.
The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. There are no pipeline delays associated with the part.
The AD7908/AD7918/AD7928 use advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7908/AD7918/AD7928 consume 2 mA maximum with 3 V supplies; with 5 V supplies, the current consumption is 2.7 mA maximum.
Through the configuration of the control register, the analog input range for the part can be selected as 0 V to REFIN or 0 V to 2 × REFIN, with either straight binary or twos complement output coding. The AD7908/AD7918/AD7928 each feature eight single-ended analog inputs with a channel sequencer to allow a preprogrammed selection of channels to be converted sequentially.
The conversion time for the AD7908/AD7918/AD7928 is determined by the SCLK frequency, which is also used as the master clock to control the conversion.
**Product Highlights**
1. High Throughput with Low Power Consumption. The AD7908/ AD7918/AD7928 offer up to 1 MSPS throughput rates. At the maximum throughput rate with 3 V supplies, the AD7908/ AD7918/AD7928 dissipate just 6 mW of power maximum.
2. Eight Single-Ended Inputs with a Channel Sequencer. A sequence of channels can be selected, through which the ADC cycles and converts on.
3. Single-Supply Operation with VDRIVE Function. The AD7908/ AD7918/AD7928 operate from a single 2.7 V to 5.25 V supply. The VDRIVE function allows the serial interface to connect directly to either 3 V or 5 V processor systems independent of AVDD.
4. Flexible Power/Serial Clock Speed Management. The conversion rate is determined by the serial clock, allowing the conversion time to be reduced through the serial clock speed increase. The parts also feature various shutdown modes to maximize power efficiency at lower throughput rates. Current consumption is 0.5 μA max when in full shutdown.
5. No Pipeline Delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once off conversion control.
### Features and Benefits
Fast throughput rate: 1 MSPS
Specified for AVDD of 2.7 V to 5.25 V
Low Power:
6.0 mW max at 1 MSPS with 3 V supply
13.5 mW max at 1 MSPS with 5 V supply
Eight (single-ended) inputs with sequencer
Wide input bandwidth: AD7928, 70 dB min SINAD at 50 kHz input frequency
Flexible power/serial clock speed management
No pipeline delays
High speed serial interface SPI®/QSPI™/MICROWIRE™/DSP compatible

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