ADS8380 Datasheet, PDF (1/35 Pages) Burr-Brown (TI) – 18-BIT, 600-kHz, PSEUDO-DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE AND REFERENCE

BurrĆBrown Products
from Texas Instruments
ADS8380
SLAS387A – NOVEMBER 2004 – REVISED DECEMBER 2004
18-BIT, 600-kHz, PSEUDO-DIFFERENTIAL INPUT, MICROPOWER SAMPLING
ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE AND REFERENCE
FEATURES
• 600-kHz Sample Rate
• ±2 LSB Typ, ±4 LSB Max INL
• 18-Bit NMC Ensured Over Temperature
• SINAD 91 dB, SFDR 119 dB at f_i = 1 kHz
• High-Speed Serial Interface up to 40 MHz
• Onboard Reference Buffer
• Onboard 4.096-V Reference
• Pseudo-Differential Input, 0 V to 4.2 V
• Onboard Conversion Clock
• Selectable Output Format, 2's Complement or
Straight Binary
• Zero Latency
• Wide Digital Supply
• Low Power:
– 115 mW at 600 kHz
– 15 mW During Nap Mode
– 10 µW During Power Down
• 28-Pin 6 x 6 QFN Package
APPLICATIONS
• Medical Instruments
• Optical Networking
• Transducer Interface
• High Accuracy Data Acquisition Systems
• Magnetometers
DESCRIPTION
The ADS8380 is a high performance 18-bit, 600-kHz
A/D converter with single-ended (pseudo-differential)
input. The device includes an 18-bit capacitor-based
SAR A/D converter with inherent sample and hold.
The ADS8380 offers a high-speed CMOS serial
interface with clock speeds up to 40 MHz.
The ADS8380 is available in a 28 lead 6 × 6 QFN
package and is characterized over the industrial
–40°C to 85°C temperature range.
Type/Speed
18-Bit Pseudo-Diff
500 kHz
ADS8383
18-Bit Pseudo-Bipolar, Fully Diff
16-Bit Pseudo-Diff
16-Bit Pseudo-Bipolar, Fully Diff
14-Bit Pseudo-Diff
12-Bit Pseudo-Diff
High Speed SAR Converter Family
~ 600 kHz
750 kHZ
ADS8381
ADS8380 (S)
ADS8382 (S)
ADS8371
1 MHz
ADS7886
1.25 MHz
2 MHz
ADS8401/05 ADS8411
ADS8402/06 ADS8412
ADS7890 (S)
3 MHz
ADS7891
4 MHz
ADS7881
REFOUT
+IN
−IN
REFIN
+
_
CDAC
4.096-V
Internal
Reference
SAR
Comparator
Clock
Output
Latches
and
3-State
Drivers
Conversion
and
Control Logic
FS
SCLK
SB/2C
SDO
CS
CONVST
BUSY
PD
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004, Texas Instruments Incorporated