Datasheet

AD7357
Rev. B | Page 3 of 20
SPECIFICATIONS
V
DD
= 2.5 ± 10% V, V
DRIVE
= 2.25 V to 3.6 V, internal reference = 2.048 V, f
SCLK
= 80 MHz, f
SAMPLE
= 4.2 MSPS; T
A
= T
MIN
to T
MAX
1
, unless
otherwise noted.
Table 2.
AD7357B/AD7357Y AD7357WY
Parameter
Min Typ Max Min Typ Max
Unit
Test Conditions/
Comments
DYNAMIC PERFORMANCE f
IN
= 500 kHz sine wave
Signal-to-Noise Ratio (SNR) 74.5 76.5 74.5 76.5 dB
74 −40°C to +25°C only
Signal-to-Noise and Distortion (SINAD)
2
74 76 74 76 dB
73.5 −40°C to +25°C only
Total Harmonic Distortion (THD)
2
−83 −80 −83 −80 dB
−79 −40°C to +25°C only
Spurious Free Dynamic Range (SFDR) −85 −82 −85 −82 dB
−81 −40°C to +25°C only
Intermodulation Distortion (IMD)
2
fa = 1 MHz + 50 kHz,
fb = 1 MHz – 50 kHz
Second-Order Terms −86 −86 dB
Third-Order Terms −79 −79 dB
ADC-to-ADC Isolation
2
−100 −100 dB f
IN
= 1 MHz, f
NOISE
= 100 kHz
to 2.5 MHz
CMRR
2
−100 −100 dB f
NOISE
= 100 kHz to 2.5 MHz
SAMPLE-AND-HOLD
Aperture Delay 3.5 3.5 ns
Aperture Delay Match 40 40 ps
Aperture Jitter 16 16 ps
Full Power Bandwidth
@ 3 dB 110 110 MHz
@ 0.1 dB 77 77 MHz @ 0.1 dB
DC ACCURACY
Resolution 14 14 Bits
Integral Nonlinearity (INL)
2
±2 ±3 ±2 ±3 LSB
Differential Nonlinearity (DNL)
2
±0.5 ±0.99 ±0.5 ±0.99 LSB Guaranteed no missed
codes to 14 bits
Positive Full-Scale Error
2
±20 ±20 LSB
Positive Full-Scale Error Match
2
±20 ±20 LSB
Midscale Error
2
0/35 0/38 LSB
Midscale Error Match
2
±12 ±15 LSB
Negative Full-Scale Error
2
±20 ±20 LSB
Negative Full-Scale Error Match
2
±20 ±20 LSB
ANALOG INPUT
Fully Differential Input Range
(V
IN+
and V
IN−
)
V
CM
± V
REF
/2 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 1.6 0.5 1.6 V The voltage around which
V
IN+
and V
IN−
are centered
DC Leakage Current ±0.5 ±5 ±0.5 ±5 μA
Input Capacitance 32 32 pF When in track mode
8 8 pF When in hold mode