Datasheet

REV.
–2–
AD7665–SPECIFICATIONS
Parameter Conditions Min Typ Max Unit
RESOLUTION 16 Bits
ANALOG INPUT
Voltage Range V
IND
– V
INGND
±4 REF, 0 V to 4 REF, ±2 REF (See Table I)
Common-Mode Input Voltage V
INGND
–0.1 +0.5 V
Analog Input CMRR f
IN
= 180 kHz 62 dB
Input Impedance See Table I
THROUGHPUT SPEED
Complete Cycle In Warp Mode 1.75 µs
Throughput Rate In Warp Mode 1 570 kSPS
Time between Conversions In Warp Mode 1 ms
Complete Cycle In Normal Mode 2 µs
Throughput Rate In Normal Mode 0 500 kSPS
Complete Cycle In Impulse Mode 2.25 µs
Throughput Rate In Impulse Mode 0 444 kSPS
DC ACCURACY
Integral Linearity Error –2.5 +2.5 LSB
1
No Missing Codes 16 Bits
Transition Noise 0.7 LSB
Bipolar Zero Error
2
, T
MIN
to T
MAX
±5 V Range, Normal or –25 +25 LSB
Impulse Modes
Other Range or Mode –0.06 +0.06 % of FSR
Bipolar Full-Scale Error
2
, T
MIN
to T
MAX
–0.25 +0.25 % of FSR
Unipolar Zero Error
2
, T
MIN
to T
MAX
–0.18 +0.18 % of FSR
Unipolar Full-Scale Error
2
, T
MIN
to T
MAX
–0.38 +0.38 % of FSR
Power Supply Sensitivity AVDD = 5 V ±5% ±9.5 LSB
AC ACCURACY
Signal-to-Noise f
IN
= 10 kHz 89 90 dB
3
f
IN
= 180 kHz 90 dB
Spurious-Free Dynamic Range f
IN
= 180 kHz 100 dB
Total Harmonic Distortion f
IN
= 180 kHz –100 dB
Signal-to-(Noise+Distortion) f
IN
= 10 kHz 88.5 90 dB
f
IN
= 180 kHz, –60 dB Input 30 dB
–3 dB Input Bandwidth 3.6 MHz
SAMPLING DYNAMICS
Aperture Delay 2ns
Aperture Jitter 5 ps rms
Transient Response Full-Scale Step 1 µs
REFERENCE
External Reference Voltage Range 2.3 2.5 AVDD – 1.85 V
External Reference Current Drain 570 kSPS Throughput 114 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
Pipeline Delay Conversion Results Available Immediately
after Completed Conversion
V
OL
I
SINK
= 1.6 mA 0.4 V
V
OH
I
SOURCE
= –570 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
5
570 kSPS Throughput
AVDD 14 mA
DVDD
6
4.5 mA
OVDD
6
20 µA
(–40C to +85C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.)
C