Datasheet

REV. A
–2–
AD7677–SPECIFICATIONS
(–40C to +85C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise stated.)
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 85 dB
Input Current 1 MSPS Throughput 11 µA
Input Impedance See Analog Input Section
THROUGHPUT SPEED
Complete Cycle In Warp Mode 1 µs
Throughput Rate In Warp Mode 0.001 1 MSPS
Time Between Conversions In Warp Mode 1 ms
Complete Cycle In Normal Mode 1.25 µs
Throughput Rate In Normal Mode 0 800 kSPS
Complete Cycle In Impulse Mode 1.5 µs
Throughput Rate In Impulse Mode 0 666 kSPS
DC ACCURACY
Integral Linearity Error –1 +1 LSB
1, 2
Differential Linearity Error –1 +1 LSB
2
No Missing Codes 16 Bits
Transition Noise 0.35 LSB
+Full-Scale Error
3
In Warp Mode –25 +25 LSB
–Full Scale Error
3
In Warp Mode –20 +20 LSB
Zero Error
3
In Warp Mode –15 +15 LSB
+Full-Scale Error
3
In Impulse or Normal Mode –40 +40 LSB
–Full Scale Error
3
In Impulse or Normal Mode –20 +20 LSB
Zero Error
3
In Impulse or Normal Mode –23 +23 LSB
Power Supply Sensitivity AVDD = 5 V ± 5% ±1.4 LSB
AC ACCURACY
Signal-to-Noise f
IN
= 20 kHz 92 94 dB
2, 4
f
IN
= 45 kHz 94 dB
Spurious Free Dynamic Range f
IN
= 20 kHz 104.5 110 dB
2
f
IN
= 45 kHz 110 dB
Total Harmonic Distortion f
IN
= 20 kHz –110 –103.5 dB
2
f
IN
= 45 kHz –110 dB
Signal-to-(Noise+Distortion) f
IN
= 20 kHz 92 94 dB
2
f
IN
= 45 kHz 94
f
IN
= 45 kHz, –60 dB Input 34 dB
–3 dB Input Bandwidth 15.8 MHz
SAMPLING DYNAMICS
Aperture Delay 2ns
Aperture Jitter 5 ps rms
Transient Response Full-Scale Step 250 ns
REFERENCE
External Reference Voltage Range 2.3 2.5 AVDD – 1.85 V
External Reference Current Drain 1 MSPS Throughput 37 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
Pipeline Delay Results Available Immediately after
Completed Conversion
V
OL
I
SINK
= 1.6 mA 0.4 V
V
OH
I
SOURCE
= –100 µA OVDD – 0.6 V