Datasheet

AD7356
Rev. A | Page 3 of 20
SPECIFICATIONS
V
DD
= 2.5 V ± 10%, V
DRIVE
= 2.25 V to 3.6 V, internal reference = 2.048 V, f
SCLK
= 80 MHz, f
SAMPLE
= 5 MSPS, T
A
= T
MIN
to T
MAX
1
, unless
otherwise noted.
Table 2.
Parameter Min Typ Max Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
IN
= 1 MHz sine wave
Signal-to-Noise Ratio (SNR)
2
70 71.5 dB
Signal-to-(Noise and Distortion) (SINAD)
2
69.5 71 dB
Total Harmonic Distortion (THD)
2
−84 −77.5 dB
Spurious Free Dynamic Range (SFDR)
2
−85 −78.5 dB
Intermodulation Distortion (IMD)
2
fa = 1 MHz + 50 kHz, fb = 1 MHz − 50 KHz
Second-Order Terms −84 dB
Third-Order Terms −76 dB
ADC-to-ADC Isolation
2
−100 dB f
IN
= 1 MHz, f
NOISE
= 100 kHz to 2.5 MHz
CMRR
2
−100 dB f
NOISE
= 100 kHz to 2.5 MHz
SAMPLE AND HOLD
Aperture Delay 3.5 ns
Aperture Delay Match 40 ps
Aperture Jitter 16 ps
Full Power Bandwidth
@ 3 dB 110 MHz
@ 0.1 dB 77 MHz
DC ACCURACY
Resolution 12 Bits
Integral Nonlinearity (INL)
2
±0.5 ±1 LSB
Differential Nonlinearity (DNL)
2
±0.5 ±0.99 LSB Guaranteed no missed codes to 12 bits
Positive Full-Scale Error
2
±1 ±6 LSB
Positive Full-Scale Error Match
2
±2 ±8 LSB
Midscale Error
2
+5 0/+11 LSB
Midscale Error Match
2
±2 ±8 LSB
Negative Full-Scale Error
2
±1 ±6 LSB
Negative Full-Scale Error Match
2
±2 ±8 LSB
ANALOG INPUT
Fully Differential Input Range (V
IN+
and V
IN−
) V
CM
± V
REF
/2 V V
CM
= common-mode voltage, V
IN+
and
V
IN−
must remain within GND and V
DD
Common-Mode Voltage Range 0.5 1.9 V The voltage around which V
IN+
and V
IN−
are
centered
DC Leakage Current ±0.5 ±5 A
Input Capacitance 32 pF When in track mode
8 pF When in hold mode
REFERENCE INPUT/OUTPUT
V
REF
Input Voltage Range 2.048 + 0.1 V
DD
V
V
REF
Input Current 0.3 0.45 mA When in reference overdrive mode
V
REF
Output Voltage 2.038 2.058 V 2.048 V ± 0.5% max @ V
DD
= 2.5 V ± 5%
2.043 2.053 V 2.048 V ± 0.25% max @ V
DD
= 2.5 V ± 5% and 25°C
V
REF
Temperature Coefficient 6 20 ppm/°C
V
REF
Long Term Stability 100 ppm For 1000 hours
V
REF
Thermal Hysteresis
2
50 ppm
V
REF
Noise 60 V rms
V
REF
Output Impedance 1 Ω