Datasheet

REV. A
–2–
AD7675–SPECIFICATIONS
Parameter Conditions Min Typ Max Unit
RESOLUTION 16 Bits
ANALOG INPUT
Voltage Range V
IN+
– V
IN–
–V
REF
+V
REF
V
Operating Input Voltage V
IN+,
V
IN–
to AGND –0.1 +3 V
Analog Input CMRR f
IN
= 10 kHz 79 dB
Input Current 100 kSPS Throughput 1 µA
Input Impedance See Analog Input Section
THROUGHPUT SPEED
Complete Cycle 10 µs
Throughput Rate 0 100 kSPS
DC ACCURACY
Integral Linearity Error –1.5 +1.5 LSB
1
No Missing Codes 16 Bits
Transition Noise 0.35 LSB
+Full-Scale Error
2
–22 +22 LSB
–Full-Scale Error
2
–22 +22 LSB
Zero Error
2
–8 +8 LSB
Power Supply Sensitivity AVDD = 5 V ± 5% ±0.5 LSB
AC ACCURACY
Signal-to-Noise f
IN
= 20 kHz 92 94 dB
3
f
IN
= 45 kHz 94 dB
3
Spurious Free Dynamic Range f
IN
= 20 kHz 104.5 110 dB
3
f
IN
= 45 kHz 110 dB
3
Total Harmonic Distortion f
IN
= 20 kHz –110 –103.5 dB
3
f
IN
= 45 kHz –110 dB
3
Signal-to-(Noise+Distortion) f
IN
= 20 kHz 92 94 dB
3
f
IN
= 45 kHz 94 dB
3
f
IN
= 45 kHz, –60 dB Input 34 dB
3
–3 dB Input Bandwidth 3.9 MHz
SAMPLING DYNAMICS
Aperture Delay 2ns
Aperture Jitter 5 ps rms
Transient Response Full-Scale Step 8.75 µs
REFERENCE
External Reference Voltage Range 2.3 2.5 AVDD – 1.85 V
External Reference Current Drain 100 kSPS Throughput 35 µA
DIGITAL INPUTS
Logic Levels
V
IL
–0.3 +0.8 V
V
IH
2.0 DVDD + 0.3 V
I
IL
–1 +1 µA
I
IH
–1 +1 µA
DIGITAL OUTPUTS
Data Format Parallel or Serial 16-Bit Conversion Results Available
Pipeline Delay Immediately After Completed Conversion
V
OL
I
SINK
= 1.6 mA 0.4 V
V
OH
I
SOURCE
= –100 µA OVDD – 0.6 V
POWER SUPPLIES
Specified Performance
AVDD 4.75 5 5.25 V
DVDD 4.75 5 5.25 V
OVDD 2.7 5.25
4
V
Operating Current 300 kSPS Throughput
AVDD 3mA
DVDD
5
750 µA
OVDD
5
7.5 µA
Power Dissipation
5
100 kSPS Throughput 17 25 mW
100 SPS Throughput 15 µW
In Power-Down Mode
5
7 µW
TEMPERATURE RANGE
7
Specified Performance T
MIN
to T
MAX
–40 +85 °C
NOTES
1
LSB means Least Significant Bit. With the ±2.5 V input range, one LSB is 76.3 µV.
2
See Definition of Specifications section. These specifications do not include the error contribution from the external reference.
3
All specifications in dB are referred to a full-scale input FS. Tested with an input signal at 0.5 dB below full-scale unless otherwise specified.
4
The max should be the minimum of 5.25 V and DVDD + 0.3 V.
5
Tested in Parallel Reading Mode.
6
With OVDD below DVDD + 0.3 V and all digital inputs forced to DVDD or DGND, respectively.
7
Contact factory for extended temperature range.
Specifications subject to change without notice.
(–40C to +85C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.)