Datasheet

AD7661
Rev. 0 | Page 3 of 28
SPECIFICATIONS
Table 2. –40°C to +85°C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted
Parameter Conditions Min Typ Max Unit
RESOLUTION 16 Bits
ANALOG INPUT
Voltage Range V
IN
– V
INGND
0 V
REF
V
Operating Input Voltage V
IN
–0.1 +3 V
V
INGND
–0.1 +0.5 V
Analog Input CMRR f
IN
= 10 kHz 68 dB
Input Current 100 kSPS Throughput 1.1 µA
Input Impedance
1
THROUGHPUT SPEED
Complete Cycle 10 µs
Throughput Rate 0 100 kSPS
DC ACCURACY
Integral Linearity Error –2.5 +2.5 LSB
2
No Missing Codes 16 Bits
Differential Linearity Error –1.0 +1.5 LSB
Transition Noise 0.7 LSB
Unipolar Zero Error, T
MIN
to T
MAX
3
±5 LSB
Unipolar Zero Error Temperature Drift
3
±0.25 ppm/°C
Full-Scale Error, T
MIN
to T
MAX
3
REF = 2.5 V ±0.08 % of FSR
Full-Scale Error Temperature Drift ±0.4 ppm/°C
Power Supply Sensitivity AVDD = 5 V ± 5% ±2 LSB
AC ACCURACY
Signal-to-Noise f
IN
= 20 kHz 88 89.3 dB
4
Spurious Free Dynamic Range f
IN
= 20 kHz 96 107 dB
Total Harmonic Distortion f
IN
= 20 kHz –107 –96 dB
Signal-to-(Noise + Distortion) f
IN
= 20 kHz 88 89.3 dB
–60 dB Input, f
IN
= 20 kHz 30 dB
–3 dB Input Bandwidth 820 kHz
SAMPLING DYNAMICS
Aperture Delay 2 ns
Aperture Jitter 5 ps rms
Transient Response Full-Scale Step 8.75 µs
REFERENCE
Internal Reference Voltage V
REF
@ 25°C 2.48 2.5 2.52 V
Internal Reference Temperature Drift –40°C to +85°C ±3 ±15 ppm/°C
Output Voltage Hysteresis –40°C to +85°C 50 ppm
Long Term Drift 100 ppm/1000 Hours
Line Regulation AVDD = 5 V ± 5% ±15 ppm/V
Turn-On Settling Time C
REF
= 10 µF 5 ms
Temperature Pin
Voltage Output @ 25°C 300 mV
Temperature Sensitivity 1 mV/°C
Output Resistance 4.3 kΩ
External Reference Voltage Range 2.3 2.5 AVDD – 1.85 V
External Reference Current Drain 100 kSPS Throughput 35 µA