AD7927BRUZ Analog Devices Inc, AD7927BRUZ Datasheet - Page 2

• Manufacturer Part Number: AD7927BRUZ
• Description: IC ADC 12BIT 8CH 200KSPS 20TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7927BRUZ

• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Bits: 12
• Sampling Rate (per Second): 200k
• Number Of Converters: 1
• Power Dissipation (max): 7.5mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Resolution (bits): 12bit
• Sampling Rate: 200kSPS
• Input Channel Type: Single Ended
• Supply Voltage Range - Analog: 2.7V To 5.25V
• Supply Current: 1.5mA
• Number Of Elements: 1
• Resolution: 12Bit
• Architecture: SAR
• Sample Rate: 200KSPS
• Input Polarity: Unipolar
• Input Type: Voltage
• Rated Input Volt: 2.5/5V
• Differential Input: No
• Power Supply Requirement: Analog and Digital
• Single Supply Voltage (typ): 3/5V
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.25V
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Power Dissipation: 7.5mW
• Differential Linearity Error: -0.9LSB/1.5LSB
• Integral Nonlinearity Error: ±1LSB
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Package Type: TSSOP
• Input Signal Type: Single-Ended
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7927CBZ - BOARD EVALUATION FOR AD7927
• Lead Free Status / Rohs Status: Compliant

AD7927
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Pin Configuration and Function Descriptions............................. 7
Terminology ...................................................................................... 8
Typical Performance Characteristics ........................................... 10
Control Register.............................................................................. 12
Sequencer Operation...................................................................... 13
Shadow Register.............................................................................. 14
Typical Connection Diagram........................................................ 17
REVISION HISTORY
1/07—Rev. 0 to Rev. A
Updated Format..................................................................Universal
Updated Layout................................................................................. 8
Updated Layout............................................................................... 10
Changes to Figure 12 Caption....................................................... 14
Changes to Figure 13 Caption....................................................... 15
Changes to Ordering Guide .......................................................... 27
1/03—Revision 0: Initial Version
Timing Specifications .................................................................. 5
ESD Caution.................................................................................. 6
Circuit Information.................................................................... 15
Converter Operation.................................................................. 15
Analog Input ............................................................................... 15
ADC Transfer Function............................................................. 16
Handling Bipolar Input Signals ................................................ 16
Rev. A | Page 2 of 28
Modes of Operation ....................................................................... 19
Serial Interface ................................................................................ 22
Microprocessor Interfacing........................................................... 24
Application Hints ........................................................................... 26
Outline Dimensions ....................................................................... 27
Analog Input Selection .............................................................. 17
Digital Inputs .............................................................................. 17
V
The Reference ............................................................................. 18
Normal Mode (PM1 = PM0 = 1) ............................................. 19
Full Shutdown (PM1 = 1, PM0 = 0) ........................................ 19
Auto Shutdown (PM1 = 0, PM0 = 1)....................................... 20
Powering Up the AD7927 ......................................................... 21
Power vs. Throughput Rate....................................................... 21
Writing Between Conversions .................................................. 22
AD7927 to TMS320C541 .......................................................... 24
AD7927 to ADSP-21xx.............................................................. 24
AD7927 to DSP563xx ................................................................ 25
Grounding and Layout .............................................................. 26
Evaluating the AD7927 Performance ...................................... 26
Ordering Guide .......................................................................... 27
DRIVE
............................................................................................ 18