Datasheet

TIMING SPECIFICATIONS
(All Models, T
A
= +25°C, V
CC
= +12 V or +15 V, V
EE
= –12 V or –15 V)
Symbol Parameter Min Typ Max
t
DC
Data Valid to End of CS 50 – – ns
t
AC
Address Valid to End of CS 100 _ _ ns
t
CP
CS Pulse Width 100 – – ns
t
DH
Data Hold Time 0 – – ns
t
SETT
Output Voltage Settling Time – 2 4 µs
AD667–SPECIFICATIONS
(@ T
A
= +258C, 612 V, 615 V power supplies unless otherwise noted)
Model AD667J AD667K
Min Typ Max Min Typ Max Units
DIGITAL INPUTS
Resolution 12 12 Bits
Logic Levels (TTL, Compatible, T
MIN
–T
MAX
)
1
V
IH
(Logic “l’’) +2.0 +5.5 +2.0 +5.5 V
V
IL
(Logic “0”) 0 +0.8 0 +0.8 V
I
IH
(V
IH
= 5.5 V) 3 10 3 10 µA
I
IL
(V
IL
= 0.8 V) 1 5 1 5 µA
TRANSFER CHARACTERISTICS
ACCURACY
Linearity Error @ +25°C +1/4 61/2 ±1/8 61/4 LSB
T
A
= T
MIN
to T
MAX
±1/2 63/4 ±1/4 61/2 LSB
Differential Linearity Error @ +25°C ±1/2 63/4 ±1/4 61/2 LSB
T
A
= T
MIN
to T
MAX
Monotonicity Guaranteed Monotonicity Guaranteed LSB
Gain Error
2
±0.1 60.2 ±0.1 60.2 % FSR
3
Unipolar Offset Error
2
±1 62 ±1 62 LSB
Bipolar Zero
2
±0.05 60.1 ±0.05 60.1 % of FSR
DRIFT
Differential Linearity ±2 ±2 ppm of FSR/°C
Gain (Full Scale) T
A
= 25°C to T
MIN
or T
MAX
±5 ±30 ±5 ±15 ppm of FSR/°C
Unipolar Offset T
A
= –25°C to T
MIN
or T
MAX
±1 ±3 ±3 ppm of FSR/°C
Bipolar Zero T
A
= 25°C to T
MIN
or T
MAX
±5 ±10 ±10 ppm of FSR/°C
CONVERSION SPEED
Settling Time to ±0.01% of FSR for
FSR Change (2 kΩi500 pF Load)
with 10 kΩ Feedback 3 4 3 4 µs
with 5 kΩ Feedback 2 3 2 3 µs
For LSB Change 1 1 µs
Slew Rate 10 10 V/µs
ANALOG OUTPUT
Ranges
4
±2.5, ±5, ±10, ±2.5, ±5, ±10, V
+5, +10 +5, +10
Output Current ±5 ±5mA
Output Impedance (DC) 0.05 0.05 Ω
Short Circuit Current 40 40 mA
REFERENCE OUTPUT 9.90 10.00 10.10 9.90 10.00 10.10 V
External Current 0.1 1.0 0.1 1.0 mA
POWER SUPPLY SENSITIVITY
V
CC
= +11.4 V to +16.5 V dc 5 10 5 10 ppm of FS/%
V
EE
= –11.4 V to –16.5 V dc 5 10 5 10 ppm of FS/%
POWER SUPPLY REQUIREMENTS
Rated Voltages ±12, ±15 ±12, ±15 V
Range
4
611.4 616.5 611.4 616.5 V
Supply Current
+11.4 V to +16.5 V dc 8 12 8 12 mA
–11.4 V to –16.5 V dc 20 25 20 25 mA
TEMPERATURE RANGE
Specification 0 +70 0 +70 °C
Storage –65 +125 –65 +125 °C
NOTES
1
The digital input specifications are 100% tested at +25°C, and guaranteed but not tested over the full temperature range.
2
Adjustable to zero.
3
FSR means “Full-Scale Range” and is 20 V for ±10 V range and 10 V for the ±5 V range.
4
A minimum power supply of ±12.5 V is required for a ±10 V full-scale output and ±11.4 V is required for all other voltage ranges.
Specifications subject to change without notice.
Specifications shown in boldface are tested on all production units at final electrical
test. Results from those tests are used to calculate outgoing quality levels. All min and
max specifications are guaranteed, although only those shown in boldface are tested
on all production units.
ABSOLUTE MAXIMUM RATINGS
V
CC
to Power Ground . . . . . . . . . . . . . . . . . . . . . 0 V to +18 V
V
EE
to Power Ground . . . . . . . . . . . . . . . . . . . . . 0 V to –18 V
Digital Inputs (Pins 11–15, 17–28)
to Power Ground . . . . . . . . . . . . . . . . . . . . –1.0 V to +7.0 V
Ref In to Reference Ground . . . . . . . . . . . . . . . . . . . . . . ±12 V
Bipolar Offset to Reference Ground . . . . . . . . . . . . . . . . ±12 V
10 V Span R to Reference Ground . . . . . . . . . . . . . . . . . ±12 V
20 V Span R to Reference Ground . . . . . . . . . . . . . . . . . ±24 V
Ref Out, V
OUT
(Pins 6, 9) . . Indefinite Short to Power Ground
. . . . . . . . . . . . . . . . . . . . . . . . . . . Momentary Short to V
CC
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 mW
REV. A
–2–