Document
Data Sheet
2.7 V to 5.5 V, <100 µA, 8-/10-/12-Bit nanoDACs with I2C Compatible Interface in LFCSP and SC70
AD5602/AD5612/AD5622
FEATURES
Single 8-, 10-, 12-bit DACs, 2 LSB INL 6-lead LFCSP and SC70 packages Micropower operation: 100 µA maximum at 5 V Power down to <150 nA at 3 V 2.7 V to 5.5 V power supply Guaranteed monotonic by design Power-on reset to 0 V with brownout detection 3 power-down functions I2C compatible serial interface supports standard (100 kHz),
fast (400 kHz), and high speed (3.4 MHz) modes On-chip output buffer amplifier, rail-to-rail operation
APPLICATIONS
Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators
FUNCTIONAL BLOCK DIAGRAM
VDD GND
POWER-ON RESET
AD5602/AD5612/AD5622
DAC REGISTER
REF(+)
8-/10-/12-BIT DAC
OUTPUT BUFFER
VOUT
INPUT CONTROL
LOGIC
POWER-DOWN CONTROL LOGIC
RESISTOR NETWORK
ADDR SCL SDA
Figure 1.
Table 1. Related Devices Device No.
AD5601/AD5611/AD5621
Description
2.7 V to 5.5 V, <100 µA, 8-, 10-, 12-bit nanoDAC with SPI interface in tiny LFCSP and SC70 packages
05446-001
GENERAL DESCRIPTION
The AD5602/AD5612/AD5622, members of the nanoDAC® family, are single 8-, 10-, 12-bit buffered voltage-out digital-toanalog converters (DAC) that operate from a single 2.7 V to 5.5 V supply, consuming <100 µA at 5 V. These DACs come in tiny LFCSP and SC70 packages. Each DAC contains an on-chip precision output amplifier that allows rail-to-rail output swing to be achieved.
The AD5602/AD5612/AD5622 use a 2-wire I2C compatible serial interface that operates in standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes.
The references for AD5602/AD5612/AD5622 derive from the power supply inputs to give the widest dynamic output range. Each device incorporates a power-on reset circuit that ensures the DAC output powers up to 0 V and remains there until a valid write takes place to the device. The devices contain a power-down feature that reduces the current consumption of the devices to <150 nA at 3 V and provides software selectable output loads while in power-down mode. The devices are put into power-down mode over the serial interface. The low power consumption of the AD5602/AD5612/ AD5622 in normal operation makes them ideally suited for use in portable, battery operated equipment. The typical power consumption is 0.4 mW at 5 V.
Rev. E
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PRODUCT HIGHLIGHTS
1. Available in 6-lead LFCSP and SC70 packages. 2. Maximum 100 µA power consumption, single-supply
operation. These devices operate from a single 2.7 V to 5.5 V supply, typically consuming 0.2 mW at 3 V and 0.4 mW at 5 V, making them ideal for battery-powered applications. 3. The on-chip output buffer amplifier allows the output of the DAC to swing rail-to-rail with a typical slew rate of 0.5 V/µs. 4. Reference derived from the power supply. 5. Standard, fast, and high speed mode I2C interface. 6. Designed for very low power consumption. 7. Power-down capability. When powered down, the DAC typically consumes <150 nA at 3 V. 8. Power-on reset and brownout detection.
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AD5602/AD5612/AD5622
TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3
I2C Timing Specifications............................................................ 4 Timing Diagram ........................................................................... 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configurations and Function Descriptions ........................... 7 Typical P.