The ADS8354, ADS7854, and ADS7254 belong to a family of pin-compatible, dual, high-speed, simultaneous-sampling, analog-to-digital converters (ADCs) that support fully-differential analog inputs.
Each device includes two individually programmable reference sources that can be used for system-level gain calibration. Also, a flexible serial interface that can operate over a wide power-supply range enables easy communication with a large variety of host controllers. Power consumption for a given throughput can be optimized by using the two low-power modes supported by the device. All devices are fully specified over the extended industrial temperature range (–40°C to 125°C) and are available in pin-compatible, WQFN-16 (3-mm ×
3-mm) and TSSOP-16 packages.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
ADSxx54 | TSSOP (16) | 5.00 mm × 4.40 mm |
WQFN (16) | 3.00 mm × 3.00 mm |
Changes from A Revision (July 2014) to B Revision
Changes from * Revision (October 2013) to A Revision
PRODUCT | RESOLUTION (Bits) | INPUT CONFIGURATION | NMC (Bits) | INL (LSB) | SNR (dB) |
---|---|---|---|---|---|
ADS8354 | 16 | Fully-differential | 16 | ±2.5 | 93 (typ) |
ADS7854 | 14 | Fully-differential | 14 | ±1.5 | 88 (typ) |
ADS7254 | 12 | Fully-differential | 12 | ±1 | 74 (typ) |
ADS8353 | 16 | Single-ended and pseudo-differential |
16 | ±2.5 | 89 (typ) |
ADS7853 | 14 | Single-ended and pseudo-differential |
14 | ±2 | 84 (typ) |
ADS7253 | 12 | Single-ended and pseudo-differential |
12 | ±1 | 73.5 (typ) |
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NAME | NO. | |||
TSSOP | WQFN | |||
AINM_A | 2 | 16 | Analog input | Negative analog input, channel A |
AINM_B | 7 | 5 | Analog input | Negative analog input, channel B |
AINP_A | 1 | 15 | Analog input | Positive analog input, channel A |
AINP_B | 8 | 6 | Analog input | Positive analog input, channel B |
AVDD | 16 | 14 | Supply | Supply voltage for ADC operation |
CS | 11 | 9 | Digital input | Chip-select signal; active low |
DVDD | 9 | 7 | Digital I/O supply | Digital I/O supply |
GND | 15 | 13 | Supply | Digital ground |
REFGND_A | 4 | 2 | Supply | Reference ground potential A |
REFGND_B | 5 | 3 | Supply | Reference ground potential B |
REFIO_A | 3 | 1 | Analog input/output | Reference voltage input/output, channel A |
REFIO_B | 6 | 4 | Analog input/output | Reference voltage input/output, channel B |
SCLK | 12 | 10 | Digital input | Clock for serial communication |
SDI | 10 | 8 | Digital input | Data input for serial communication |
SDO_A | 13 | 11 | Digital output | Data output for serial communication, channel A and channel B |
SDO_B | 14 | 12 | Digital output | Data output for serial communication, channel B |
Thermal pad | — | Thermal pad | Supply | Exposed thermal pad (only for WQFN). TI recommends connecting this pin to the printed circuit board (PCB) ground. |