AD7995YRMZ-0

AD7995YRMZ-0 Datasheet

AD7991/AD7995/AD7999

Part	Datasheet
AD7995YRMZ-0	AD7995YRMZ-0 (pdf)

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Preliminary Technical Data 4-Channel, 12-/10-/8-Bit ADC with I2CCompatible Interface in 8-Lead SOT23 AD7991/AD7995/AD7999 12-/10-/8-bit ADC with fast conversion time 2 µs typ 4 Channel / 3 Channel with Reference input Specified for VDD of V to V Sequencer operation Temperature Range -40 °C to 125 °C serial interface supports standard, fast, and High-speed modes 2 versions allow 2 I2C addresses Low power consumption Shutdown mode µA max 8-lead SOT23 and 8 lead MSOP packages System Monitoring Battery Powered Systems Data Acquisition Medical Instruments FUNCTIONAL BLOCK DIAGRAM VIN0 VIN1 VIN2 VIN3/Vref I/P T/H MUX 12-/10-/8-BIT SAR ADC CONTROL LOGIC & I2C INTERFACE SCL SDA AD7991/7995/7999 Figure The AD7991/AD7995/AD7999 are 12-/10-/8-bit, low power, successive approximation ADCs with an I2C-compatible interface. The parts operate from a single V to V power supply and feature a 2 µs conversion time. The part contains a 4-channel multiplexer and track-and-hold amplifier that can handle input frequencies up to 11 MHz. The AD7991/AD7995/AD7999 provides a 2-wire serial interface compatible with I2C interfaces. The parts come in two versions with each part having an individual I2C address. This will allow two of the same devices be connected to the same I2C bus. Both parts support standard, fast and high-speed I2C interface modes The AD7991/AD7995/AD7999 normally remain in a shutdown state while not converting, and power up only for conversions. The conversion process is controlled by a command mode, where every time an I2C read operation is executed on the AD7991/AD7995/AD7999, a conversion is performed and the result is returned on the I2C bus. The reference for the part is taken from VDD, this allows the widest dynamic input range to the ADC. Thus the analog input range to the ADC is 0V to VDD. An external reference may also be used with this part. The external reference may be applied through the Ain3 input. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. PRODUCT HIGHLIGHTS 4 single ended analog input channels, with the option of having 3 single ended analog input channels and 1 reference input channel. I2C compatible serial Interface. Standard, Fast and HsModes Automatic shutdown. Reference derived from the power supply or external reference. 8-lead SOT23 and 8 lead MSOP Packages. Table 1 Related Devices Device Number Resolution Input Channels AD7998 AD7997 AD7994 AD7993 AD7992 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: Fax: 2007 Analog Devices, Inc. All rights reserved. AD7991/AD7995/AD7999 Converter 17 Typical Connection Diagram 18 Analog Input 18 Internal Register Structure 20 Configuration Register 20 SAMPLE DELAY and BIT TRIAL DELAY 20 Conversion Result Register 21 Serial Interface 22 Serial Bus 22 Writing to the 23 Writing Data to the Configuration Register 23 reading from the AD7991/AD7995/AD7999 24 Placing the 25 into High Speed 25 Mode of 26 Outline Dimensions 27 Ordering 27 Preliminary Technical Data AD7991/AD7995/AD7999 AD7991 SPECIFICATIONS Temperature range is as follows Y version -40°C to +125°C. Unless otherwise noted, VDD = V to V fSCL = Mhz Unless otherwise noted TA = TMIN to TMAX. Table Parameter DYNAMIC PERFORMANCE1 Y Version Signal-to-Noise + Distortion SINAD 2 Signal-to-Noise Ratio SNR 2 Total Harmonic Distortion THD 2 Peak Harmonic or Spurious Noise SFDR 2 Intermodulation Distortion IMD 2 Second Order Terms Third Order Terms Channel-to-Channel Isolation2 Full Power Bandwidth2 DC ACCURACY Resolution Integral Nonlinearity1, 2 Differential Nonlinearity1, 2 Offset Error2 Offset Error Matching Offset Temperature drift Gain Error2 Gain Error Matching Gain Temperature drift ANALOG INPUT Voltage Range DC Leakage Current Input Capacitance REFERENCE INPUT REFIN Input Voltage Range DC Leakage Current REFIN Input Capacitance Input Impedance LOGIC INPUTS SDA, SCL Input High Voltage, VINH Input Low Voltage, VINL Input Leakage Current, IIN Input Capacitance, CIN3 Input Hysteresis, VHYST LOGIC OUTPUTS OPEN DRAIN Output Low Voltage, VOL -90 11 2 12 ±1 ±4 TBD ±2 TBD 0 to REFIN ±1 30 to VDD ±1 30 69 VDD ±1 10 VDD Unit dB min dB min dB max dB max dB typ dB typ dB typ MHz typ MHz typ Test Conditions/Comments FIN = 10 kHz sine wave for fSCL from MHz to MHz FIN = 1 kHz sine wave for fSCL up to 400 kHz fa = kHz, fb = kHz for fSCL from MHz to MHz fa = kHz, fb = kHz for fSCL up to 400 kHz FIN = 108 Hz see the Terminology Section 3 dB Bits LSB max LSB typ LSB max LSB typ LSB max LSB max ppm/°C typ LSB max LSB max ppm/°C typ Guaranteed no missed codes to 12 bits V µA max pF typ V min/V max µA max pF typ V min V max µA max pF max V min VIN = 0 V or VDD V max V max ISINK = 3 mA ISINK = 6 mA AD7991/AD7995/AD7999 Preliminary Technical Data Parameter Floating-State Leakage Current Floating-State Output Capacitance3 Output Coding THROUGHPUT RATE ORDERING GUIDE Model AD7991YRJZ-1 AD7991YRJZ-0 AD7991YRMZ-0 AD7991YRMZ-1 AD7995YRJZ-0 AD7995YRJZ-1 AD7995YRMZ-0 AD7999YRJZ-1 Temperature Range -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C Package Description 8-LEAD SOT-23 8-LEAD SOT-23 8-LEAD MSOP 8-LEAD MSOP 8-LEAD SOT-23 8-LEAD SOT-23 8-LEAD MSOP 8-LEAD SOT-23 Branding C56 C55 C56 C57 C58 C57 C5B Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR06461-0-8/07 PrF

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Preliminary Technical Data
4-Channel, 12-/10-/8-Bit ADC with I2CCompatible Interface in 8-Lead SOT23

AD7991/AD7995/AD7999
12-/10-/8-bit ADC with fast conversion time 2 µs typ 4 Channel / 3 Channel with Reference input Specified for VDD of V to V Sequencer operation Temperature Range -40 °C to 125 °C serial interface supports standard, fast,
and High-speed modes 2 versions allow 2 I2C addresses Low power consumption

Shutdown mode µA max 8-lead SOT23 and 8 lead MSOP packages

System Monitoring Battery Powered Systems Data Acquisition Medical Instruments

FUNCTIONAL BLOCK DIAGRAM

VIN0 VIN1

VIN2 VIN3/Vref

I/P T/H MUX
12-/10-/8-BIT SAR ADC

CONTROL LOGIC &

I2C INTERFACE

SCL SDA

AD7991/7995/7999

Figure

The AD7991/AD7995/AD7999 are 12-/10-/8-bit, low power, successive approximation ADCs with an I2C-compatible interface. The parts operate from a single V to V power supply and feature a 2 µs conversion time. The part contains a 4-channel multiplexer and track-and-hold amplifier that can handle input frequencies up to 11 MHz.

The AD7991/AD7995/AD7999 provides a 2-wire serial interface compatible with I2C interfaces. The parts come in two versions with each part having an individual I2C address. This will allow two of the same devices be connected to the same I2C bus. Both parts support standard, fast and high-speed I2C interface modes

The AD7991/AD7995/AD7999 normally remain in a shutdown state while not converting, and power up only for conversions. The conversion process is controlled by a command mode, where every time an I2C read operation is executed on the AD7991/AD7995/AD7999, a conversion is performed and the result is returned on the I2C bus.

The reference for the part is taken from VDD, this allows the widest dynamic input range to the ADC. Thus the analog input range to the ADC is 0V to VDD. An external reference may also be used with this part. The external reference may be applied through the Ain3 input.

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.

PRODUCT HIGHLIGHTS
4 single ended analog input channels, with the option of having 3 single ended analog input channels and 1 reference input channel.

I2C compatible serial Interface. Standard, Fast and HsModes

Automatic shutdown.

Reference derived from the power supply or external reference.
8-lead SOT23 and 8 lead MSOP Packages.

Table 1 Related Devices

Device Number Resolution

Input Channels

AD7998

AD7997

AD7994

AD7993

AD7992

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel:

Fax:
2007 Analog Devices, Inc. All rights reserved.

AD7991/AD7995/AD7999
Converter 17 Typical Connection Diagram 18 Analog Input 18 Internal Register Structure 20 Configuration Register 20 SAMPLE DELAY and BIT TRIAL DELAY 20 Conversion Result Register 21 Serial Interface 22 Serial Bus 22 Writing to the 23 Writing Data to the Configuration Register 23 reading from the AD7991/AD7995/AD7999 24 Placing the 25 into High Speed 25 Mode of 26 Outline Dimensions 27 Ordering 27

Preliminary Technical Data

AD7991/AD7995/AD7999

AD7991 SPECIFICATIONS

Temperature range is as follows Y version -40°C to +125°C. Unless otherwise noted, VDD = V to V fSCL = Mhz Unless otherwise noted TA = TMIN to TMAX.

Table Parameter DYNAMIC PERFORMANCE1

Y Version

Signal-to-Noise + Distortion SINAD 2

Signal-to-Noise Ratio SNR 2

Total Harmonic Distortion THD 2

Peak Harmonic or Spurious Noise SFDR 2

Intermodulation Distortion IMD 2

Second Order Terms Third Order Terms Channel-to-Channel Isolation2 Full Power Bandwidth2

DC ACCURACY Resolution Integral Nonlinearity1, 2

Differential Nonlinearity1, 2

Offset Error2 Offset Error Matching Offset Temperature drift Gain Error2 Gain Error Matching Gain Temperature drift ANALOG INPUT Voltage Range DC Leakage Current Input Capacitance REFERENCE INPUT REFIN Input Voltage Range

DC Leakage Current REFIN Input Capacitance Input Impedance LOGIC INPUTS SDA, SCL Input High Voltage, VINH Input Low Voltage, VINL Input Leakage Current, IIN Input Capacitance, CIN3 Input Hysteresis, VHYST LOGIC OUTPUTS OPEN DRAIN Output Low Voltage, VOL
-90 11 2
12 ±1 ±4 TBD ±2 TBD
0 to REFIN ±1 30
to VDD
±1 30 69

VDD ±1 10 VDD

Unit
dB min dB min dB max dB max
dB typ dB typ dB typ MHz typ MHz typ

Test Conditions/Comments FIN = 10 kHz sine wave for fSCL from MHz to MHz FIN = 1 kHz sine wave for fSCL up to 400 kHz
fa = kHz, fb = kHz for fSCL from MHz to MHz fa = kHz, fb = kHz for fSCL up to 400 kHz

FIN = 108 Hz see the Terminology Section 3 dB

Bits LSB max LSB typ LSB max LSB typ LSB max LSB max ppm/°C typ LSB max LSB max ppm/°C typ

Guaranteed no missed codes to 12 bits

V µA max pF typ

V min/V max µA max pF typ

V min V max µA max pF max V min

VIN = 0 V or VDD

V max V max

ISINK = 3 mA ISINK = 6 mA

AD7991/AD7995/AD7999

Preliminary Technical Data

Parameter Floating-State Leakage Current Floating-State Output Capacitance3 Output Coding

THROUGHPUT RATE
ORDERING GUIDE

Model AD7991YRJZ-1 AD7991YRJZ-0 AD7991YRMZ-0 AD7991YRMZ-1 AD7995YRJZ-0 AD7995YRJZ-1 AD7995YRMZ-0 AD7999YRJZ-1

Temperature Range -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C -40°C to 125° C

Package Description 8-LEAD SOT-23 8-LEAD SOT-23 8-LEAD MSOP 8-LEAD MSOP 8-LEAD SOT-23 8-LEAD SOT-23 8-LEAD MSOP 8-LEAD SOT-23

Branding C56 C55 C56 C57 C58 C57 C5B

Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.

PR06461-0-8/07 PrF

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Datasheet ID: AD7995YRMZ-0 517747