SPECIFICATIONS (CONT)
ELECTRICAL
TA = +25°C, VCC = +12V or +15V, VEE = –12V or –15V, VLOGIC = +5V unless otherwise specified.
ADC774J, ADC774SH
ADC774K, ADC774TH
TYP
PARAMETER
MIN
TYP
MAX
MIN
MAX
UNITS
INTERNAL REFERENCE VOLRAGE
Voltage
+9.9
2.0
+10
+10.1
*
*
*
*
V
mA
Source Current Available for External Loads (6)
POWER SUPPLY REQUIREMENTS
Voltage: VCC
+11.4
–11.4
+4.5
+16.5
–16.5
+5.5
5
20
15
*
*
*
*
*
*
*
*
*
*
V
V
V
mA
mA
mA
mW
VEE
VLOGIC
Current: ICC
3.5
15
9
*
*
*
*
IEE
ILOGIC
Power Dissipation (±15V Supplies)
`
325
450
TEMPERATURE RANGE (Ambient: TMIN , TMAX
)
Specifications: J, K Grades
S, T Grades
Storage
0
–55
–65
+75
+125
+150
*
*
*
*
*
*
°C
°C
°C
*Same specification as ADC774JH, JP, SH.
NOTES: (1) With fixed 50Ω resistor from Ref Out to Ref In. This parameter is also adjustable to zero at +25C. (2) FS in this specification table means Full Scale Range.
That is, for a ±10V input range FS means 20V; for a 0V to +10V range, FS means 10V. The term Full Scale for these specification instead of Full-Scale Range is used
to be consistent with other vendors' specifications tables. (3) Using internal reference. (4) See “Controlling the ADC774” section for detailed information concerning
digital timing. (5) The Harris HI-774 uses a subranging/error correction technique that allows one to begin conversion before a preceding sample-hold or multiplexer
has settled to ±1/2LSB. For 12-bit accurate conversions, the input transient to the ADC774 must settle to less than ±1/2LSB before conversion is started. The ADC774
is compatible with HI-774 in all other respects. (6) External loading must be constant during conversion. The reference output requires no buffer amplifier with either
±12V or ±15V power supplies.
PIN CONFIGURATION
Top View
DIP
Power-up Reset
+5VDC Supply (VLOGIC
)
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
STATUS
DB11 (MSB)
DB10
12/8
CS
Control
Logic
3
AO
4
DB9
Clock
R/C
5
DB8
CE
6
DB7
10V
Reference
12 Bits
+VCC
7
DB6
Ref Out
Analog Common
Ref In
8
DB5
12 Bits
12-Bit
D/A
9
DB4
Converter
10
11
12
13
14
DB3
Comparator
VEE
DB2
10kΩ
Bipolar Offset
10V Range
20V Range
DB1
5Ω
DB0 (LSB)
Digital Common
5Ω
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
ADC774
3
BB [ BURR-BROWN CORPORATION ]
