LINEAR TECHNOLOGY LTC1594 LTC1598 User Guide
Summary
These micropower, 12-bit A/D converters are designed for robust data acquisition in demanding environments. Featuring selectable 4- or 8-channel multiplexing and ultra-low operating currents (down to 1nA), they are ideal for battery-operated systems, remote monitoring, and portable instrumentation. The comprehensive manual details electrical specifications, serial I/O compatibility (SPI/QSPI/MICROWIRE), and application examples for engineers building high-precision, low-power sensor interfaces.
Page 1 Text Content
LTC1594/LTC1598 4- and 8-Channel, Micropower Sampling
12-Bit Serial I/O A/D Converters
FEATURES DESCRIPTIO 12-Bit Resolution The LTC®1594/LTC1598 are micropower, 12-bit sampling Auto Shutdown to 1n A A/D converters that feature 4- and 8-channel multiplexers, Low Supply Current: 320µA Typ respectively. They typically draw only 320µA of supply
Guaranteed ±3/4LSB Max DNL current when converting and automatically power down to Single Supply 5V Operation a typical supply current of 1n A between conversions. The (3V Versions Available: LTC1594L/LTC1598L) LTC1594 is available in a 16-pin SO package and the Multiplexer: 4-Channel MUX (LTC1594) LTC1598 is packaged in a 24-pin SSOP. Both operate on 8-Channel MUX (LTC1598) a 5V supply. The 12-bit, switched-capacitor, successive Separate MUX Output and ADC Input Pins approximation ADCs include a sample-and-hold.
MUX and ADC May Be Controlled Separately
On-chip serial ports allow efficient data transfer to a wide
Sampling Rate: 16.8ksps
range of microprocessors and microcontrollers over three
I/O Compatible with QSPI, SPI and MICROWIRETM, etc.
or four wires. This, coupled with micropower consump-
Small Package: 16-Pin Narrow SO (LTC1594)
tion, makes remote location possible and facilitates trans-
24-Pin SSOP (LTC1598)
mitting data through isolation barriers.
APPLICATIO S The circuit can be used in ratiometric applications or with
SU PP LY UR RE NT (µ A)
an external reference. The high impedance analog inputs
Pen Screen Digitizing
and the ability to operate with reduced spans (to 1.5V full
Battery-Operated Systems
scale) allow direct connection to sensors and transducers
Remote Data Acquisition
in many applications, eliminating the need for gain stages.
Isolated Data Acquisition
, LTC and LT are registered trademarks of Linear Technology Corporation.
Battery Monitoring
MICROWIRE is a trademark of National Semiconductor Corporation.
Temperature Measurement
TYPICAL APPLICATIO 24µW, 4-Channel, 12-Bit ADC Samples at 200Hz and Runs Off a 5V Supply
OPTIONAL ADC FILTER
Supply Current vs Sample Rate
TA = 25°C VCC = 5V
1µF VREF = 5V
ADCINMUXOUT VREF VCC f CLK = 320k Hz
CH0 SERIAL DATA LINK
CH1 MICROWIRE AND
CSADC SPI COMPATABLE
CSMUX
ANALOG
CH3 12-BIT 5, 14 INPUTS 8-CHANNEL CLK
CH4 MUX SAMPLING MPU
0V TO 5V
ADC DIN
RANGE CH5
CH6 CH7
COM NC
GND 0.1
4, 9 1594/98 TA01 SAMPLE FREQUENCY (k Hz)
1594/98 TA02
15948fa
Page Summary Contents For LINEAR TECHNOLOGY LTC1594 LTC1598 User Guide
Manual Details
| Brand | Linear |
|---|---|
| Pages | 24 |
| File Size | 1018.23 KB |
| Published | June 21, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What is the maximum sampling rate?
The device offers a sampling rate up to 16.8ksps.
Does it support battery operation and data monitoring?
Yes, the product supports remote data acquisition and can be used for battery monitoring via MICROWIRE.
How many channels are available on each model?
The LTC1594 provides 4-channel multiplexing, while the LTC1598 offers 8-channel multiplexing.
What connection types does it support for data transfer?
It features on-chip serial ports compatible with QSPI, SPI, MICROWIRE, and three or four wires.