Datasheet
Model AD670J AD670K
Min Typ Max Min Typ Max Units
OPERATING TEMPERATURE RANGE 0 +70 0 +70 °C
RESOLUTION 8 8 Bit
CONVERSION TIME 10 10 µs
RELATIVE ACCURACY 61/2 61/4 LSB
T
MIN
to T
MAX
6l/2 61/2 LSB
DIFFERENTIAL LINEARITY ERROR
1
T
MIN
to T
MAX
GUARANTEED NO MISSING CODES ALL GRADES
GAIN ACCURACY
@ +25°C 61.5 60.75 LSB
T
MIN
to T
MAX
62.0 61.0 LSB
UNIPOLAR ZERO ERROR
@ +25°C 61.5 60.75 LSB
T
MIN
to T
MAX
62.0 61.0 LSB
BIPOLAR ZERO ERROR
@ +25°C 61.5 60.75 LSB
T
MIN
to T
MAX
62.0 61.0 LSB
ANALOG INPUT RANGES
DIFFERENTIAL (–V
IN
to +V
IN
)
Low Range 0 to +255 0 to +255 mV
–128 to +127 –128 to +127 mV
High Range 0 to +2.55 0 to +2.55 V
–1.28 to +1.27 –1.28 to +1.27 V
ABSOLUTE (Inputs to Power GND)
Low Range T
MIN
to T
MAX
–0.150 V
CC
– 3.4 –0.150 V
CC
– 3.4 V
High Range T
MIN
to T
MAX
–1.50 V
CC
–1.50 V
CC
V
BIAS CURRENT (255 mV RANGE)
T
MIN
to T
MAX
200 500 200 500 nA
OFFSET CURRENT (255 mV RANGE)
T
MIN
to T
MAX
40 200 40 200 nA
2.55 V RANGE INPUT RESISTANCE 8.0 12.0 8.0 12.0 kΩ
2.55 V RANGE FULL-SCALE MATCH
+ AND – INPUT ±1/2 ±1/2 LSB
COMMON-MODE REJECTION
RATIO (255 mV RANGE) 11LSB
COMMON-MODE REJECTION
RATIO (2.55 V RANGE) 1 1 LSB
POWER SUPPLY
Operating Range 4.5 5.5 4.5 5.5 V
Current I
CC
30 45 30 45 mA
Rejection Ratio T
MIN
to T
MAX
0.015 0.015 % of FS/%
DIGITAL OUTPUTS
SINK CURRENT (V
OUT
= 0.4 V)
T
MIN
to T
MAX
1.6 1.6 mA
SOURCE CURRENT (V
OUT
= 2.4 V)
T
MIN
to T
MAX
0.5 0.5 mA
THREE-STATE LEAKAGE CURRENT 640 640 µA
OUTPUT CAPACITANCE 5 5 pF
DIGITAL INPUT VOLTAGE
V
INL
0.8 0.8 V
V
INH
2.0 2.0 V
DIGITAL INPUT CURRENT
(0 ≤ V
IN
≤ +5 V)
I
INL
–100 –100 µA
I
INH
+100 +100 µA
INPUT CAPACITANCE 10 10 pF
NOTES
1
Tested at V
CC
= 4 5 V, 5.0 V and 5.5 V.
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.
Specifications subject to change without notice.
AD670–SPECIFICATIONS
(@ V
CC
= +5 V and
+258C,
unless otherwise noted)
REV. A
–2–