AD974 Datasheet, PDF (4/20 Pages) Analog Devices – 4-Channel, 16-Bit, 200 kSPS Data Acquisition System

AD974
ABSOLUTE MAXIMUM RATINGS¹
Analog Inputs
VxA, VxB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25 V
CAP . . . . . . . . . . . . . . . . +V_ANA + 0.3 V to AGND2 – 0.3 V
REF . . . . . . . . . . . . . . . . . . . . Indefinite Short to AGND2,
Ground Voltage Differences
Momentary Short to V_ANA
DGND, AGND1, AGND2 . . . . . . . . . . . . . . . . . . . ± 0.3 V
Supply␣ Voltages
V_ANA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7 V
V_DIG to V_ANA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±7 V
V_DIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7 V
Digital Inputs . . . . . . . . . . . . . . . . . . . –0.3 V to V_DIG + 0.3 V
Internal␣ Power␣ Dissipation²
PDIP (N), SOIC (R), SSOP (RS) . . . . . . . . . . . . . 700 mW
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . .+150°C
Storage Temperature Range N, R . . . . . . . . –65°C to +150°C
Lead Temperature Range
(Soldering␣ 10␣ sec) . . . . . . . . . . . . . . . . . . . . . . . . . .+300°C
NOTES
1_{Stresses above those listed under Absolute Maximum Ratings may cause perma-}
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2_{Specification is for device in free air:}
28-Lead PDIP: θ_JA = 100°C/W, θ_JC = 31°C/W
28-Lead SOIC: θ_JA = 75°C/W, θ_JC = 24°C/W
28-Lead SSOP: θ_JA = 109°C/W, θ_JC = 39°C/W
PIN CONFIGURATION
SOIC, DIP AND SSOP
AGND1 1
28 V2B
V3A 2
27 V2A
V3B 3
26 V1B
V4A 4
25 V1A
V4B 5
24 V_ANA
BIP 6
23 A0
AD974
CAP 7 _{TOP VIEW} 22 A1
REF 8 ^{(Not to Scale)} 21 BUSY
AGND2 9
20 CS
R/C 10
19 WR1
V_DIG 11
PWRD 12
18 WR2
17 DATA
EXT/INT 13
16 DATACLK
DGND 14
15 SYNC
1.6mA I_OL
TO OUTPUT
PIN
C_L
100pF
500␮A I_OH
+1.4V
Figure 1. Load Circuit for Digital Interface Timing
Model
AD974AN
AD974BN
AD974AR
AD974BR
AD974ARS
AD974BRS
Temperature
Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
ORDERING GUIDE
Max INL
± 3.0 LSB
± 2.0 LSB
± 3.0 LSB
± 2.0 LSB
± 3.0 LSB
± 2.0 LSB
Min S/(N+D)
83 dB
85 dB
83 dB
85 dB
83 dB
85 dB
Package
Description
28-Lead Plastic DIP
28-Lead Plastic DIP
28-Lead SOIC
28-Lead SOIC
28-Lead SSOP
28-Lead SSOP
Package
Options
N-28B
N-28B
R-28
R-28
RS-28
RS-28
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD974 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. A