14-Bit, 8-Channel, 250 kSPS PulSAR ADC, SGM5208 Replace AD7949.
SGM5208-14
SGM5208-14.pdf
SGM5208-14.pdfFEATURES
• Low-Power, Flexible Supply Range:
2.7V to 5.5V Analog Supply
8.7mW (250kSPS in Auto-NAP Mode, VA = 2.7V,
VBD = 2.7V)
14.2mW (500kSPS, VA = 2.7V, VBD = 2.7V)
• Up to 500kSPS Sampling Rate
• Excellent DC Performance:
±1.2 LSB Typical, ±2 LSB Maximum INL at 2.7V
±0.6 LSB Typical, -1, 1.5LSB Maximum DNL at 2.7V
14-Bit NMC Over Temperature
• Excellent AC Performance at 5V, fIN = 1kHz:
80dB SNR, 87dB SFDR, -83dB THD
• Flexible Analog Input Arrangement:
On-Chip 8 Channels Mux with Breakout
Auto, Manual Channel Select and Trigger
• Other Hardware Features:
On-Chip Conversion Clock (CCLK)
Software, Hardware Reset
Programmable Status, Polarity EOC/nINT
Daisy-Chain Mode
Global nCONVST (Independent of nCS)
Deep, Nap, and Auto-NAP Power-Down Modes
SPI, DSP Compatible Serial Interface
Separate I/O Supply: 2.7V to VA
SCLK up to 40MHz (VA = VBD = 5V)
• Available in Green TQFN-4×4-24L and TSSOP-24
Packages
PIN CONFIGUTION
优势替代
FEATURES
• 14-bit resolution with no missing codes
• 8-channel multiplexer with choice of inputs
Unipolar single-ended
Differential (GND sense)
Pseudobipolar
• Throughput: 250 kSPS
• INL/DNL: ±0.5/±0.25 LSB typical
• SINAD: 85 dB @ 20 kHz
• THD: −100 dB @ 20 kHz
• Analog input range: 0 V to VREF with VREF up to VDD
• Multiple reference types
Internal selectable 2.5 V or 4.096 V
External buffered (up to 4.096 V)
External (up to VDD)
• Internal temperature sensor (TEMP)
• Channel sequencer, selectable 1-pole filter, busy indicator
• No pipeline delay, SAR architecture
• Single-supply 2.3 V to 5.5 V operation with
1.8 V to 5.5 V logic interface
• Serial interface compatible with SPI, MICROWIRE,
QSPI, and DSP
• Power dissipation
2.9 mW @ 2.5 V/200 kSPS
10.8 mW @ 5 V/250 kSPS
• Standby current: 50 nA
• 20-lead 4 mm × 4 mm LFCSP package
PIN CONFIGUTION
