Datasheet

R =200
SER
W R =130
SW
W
R =200W
SER
R =130
SW
W
C =5pF
PAR
C =20pF
S
C =20pF
S
CH_XX
AGND
Inputrange: 2V±
REF
V
DC
R =200
SER
W R =130
SW
W
R =200W
SER
R =130
SW
W
C =5pF
PAR
C =10pF
S
C =10pF
S
CH_XX
AGND
Inputrange: 4V±
REF
V
DC
ADS8556
ADS8557
ADS8558
www.ti.com SBAS404B –OCTOBER 2006– REVISED JANUARY 2012
ELECTRICAL CHARACTERISTICS: GENERAL (continued)
Over recommended operating free-air temperature range of –40°C to +125°C, AVDD = 4.5V to 5.5V, BVDD = 2.7V to 5.5V,
HVDD = 10V to 15V, HVSS = –15V to –10V, V
REF
= 2.5V (internal), and f
DATA
= maximum, unless otherwise noted.
ADS8556, ADS8557, ADS8558
PARAMETER CONDITIONS MIN TYP
(1)
MAX UNIT
POWER-SUPPLY REQUIREMENTS (continued)
ADS8556, f
DATA
= maximum 251.7 298.5 mW
ADS8557, f
DATA
= maximum 253.2 303.0 mW
ADS8558, f
DATA
= maximum 262.2 318.0 mW
ADS8556, f
DATA
= 250kSPS (auto-NAP mode) 122.5 150.0 mW
Power dissipation
(9)
ADS8557, f
DATA
= 250kSPS (auto-NAP mode) 122.5 152.5 mW
ADS8558, f
DATA
= 250kSPS (auto-NAP mode) 122.5 157.5 mW
Auto-NAP mode, no ongoing conversion,
26.0 38.3 mW
internal conversion clock
Power-down mode 3.8 580.0 μW
(9) At AVDD = 5V, BVDD = 3V, HVDD = 15V, and HVSS = –15V.
Figure 1. EQUIVALENT INPUT CIRCUITS
Copyright © 2006–2012, Texas Instruments Incorporated 9