Datasheet

–3–REV. 0
AD7396/AD7397
Parameter Symbol Conditions +3 V 10% +5 V 10% Units
STATIC PERFORMANCE
Resolution
1
N 10 10 Bits
Relative Accuracy
2
INL T
A
= +25°C ±1.75 ±1.75 LSB max
Relative Accuracy
2
INL T
A
= –40°C, +85°C, +125°C ±2.0 ±2.0 LSB max
Differential Nonlinearity
2
DNL Monotonic ±1 ±1LSB max
Zero-Scale Error V
ZSE
Data = 000
H
9.0 9.0 mV max
Full-Scale Voltage Error V
FSE
T
A
= +25°C, +85°C, +125°C, Data = 3FF
H
±42 ±42 mV max
Full-Scale Voltage Error V
FSE
T
A
= –40°C, Data = 3FF
H
±48 ±48 mV max
Full-Scale Tempco
3
TCV
FS
–45 –45 ppm/°C typ
REFERENCE INPUT
V
REF
Range V
REF
0/V
DD
0/V
DD
V min/max
Input Resistance R
REF
2.5 2.5 M typ
4
Input Capacitance
3
C
REF
5 5 pF typ
ANALOG OUTPUT
Output Current (Source) I
OUT
Data = 200
H
, V
OUT
= 5 LSB 1 1 mA typ
Output Current (Sink) I
OUT
Data = 200
H
, V
OUT
= 5 LSB 3 3 mA typ
Capacitive Load
3
C
L
No Oscillation 100 100 pF typ
LOGIC INPUTS
Logic Input Low Voltage V
IL
0.5 0.8 V max
Logic Input High Voltage V
IH
V
DD
– 0.6 4.0 V min
Input Leakage Current I
IL
10 10 µA max
Input Capacitance
3
C
IL
10 10 pF max
INTERFACE TIMING
3, 5
Chip Select Write Width t
CS
45 35 ns min
DAC Select Setup t
AS
30 15 ns min
DAC Select Hold t
AH
0 0 ns min
Data Setup t
DS
30 15 ns min
Data Hold t
DH
20 10 ns min
Load Setup t
LS
20 20 ns min
Load Hold t
LH
10 10 ns min
Load Pulsewidth t
LDW
30 30 ns min
Reset Pulsewidth t
RSW
40 30 ns min
AC CHARACTERISTICS
Output Slew Rate SR Data = 000
H
to 3FF
H
to 000
H
0.05 0.05 V/µs typ
Settling Time
6
t
S
To ±0.1% of Full Scale 70 60 µs typ
Shutdown Recovery Time t
SDR
90 80 µs typ
DAC Glitch Q Code 7FF
H
to 800
H
to 7FF
H
65 65 nV/s typ
Digital Feedthrough Q 15 15 nV/s typ
Feedthrough V
OUT
/V
REF
V
REF
= 1.5 V
DC
+1 V p-p
,
Data = 000
H
, f = 100 kHz –63 –63 dB typ
SUPPLY CHARACTERISTICS
Power Supply Range V
DD RANGE
DNL < ±1 LSB 2.7/5.5 2.7/5.5 V min/max
Positive Supply Current I
DD
V
IL
= 0 V, No Load 125/200 125/200 µA typ/max
Shutdown Supply Current I
DD_SD
SHDN = 0, V
IL
= 0 V, No Load 0.1/1.5 0.1/1.5 µA typ/max
Power Dissipation P
DISS
V
IL
= 0 V, No Load 600 1000 µW max
Power Supply Sensitivity PSS V
DD
= ±5% 0.006 0.006 %/% max
NOTES
1
One LSB = V
REF
/4096 V for the 10-bit AD7397.
2
The first two codes (000
H
, 001
H
) are excluded from the linearity error measurement.
3
These parameters are guaranteed by design and not subject to production testing.
4
Typicals represent average readings measured at +25°C.
5
All input control signals are specified with t
R
= t
F
= 2 ns (10% to 90% of +3 V) and timed from a voltage level of +1.6 V.
6
The settling time specification does not apply for negative going transitions within the last 3 LSBs of ground.
Specifications subject to change without notice.
AD7397 10-BIT
ELECTRICAL CHARACTERISTICS
(@ V
REF IN
= +2.5 V, –40C < T
A
< +85C, unless otherwise noted)