Datasheet

AD7933/AD7934
Rev. B | Page 3 of 32
SPECIFICATIONS
AD7933 SPECIFICATIONS
V
DD
= V
DRIVE
= 2.7 V to 5.25 V, internal/external V
REF
= 2.5 V, unless otherwise noted. f
CLKIN
= 25.5 MHz, f
SAMPLE
= 1.5 MSPS; T
A
= T
MIN
to
T
MAX
1
, unless otherwise noted.
Table 2.
Parameter Value
1
Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
IN
= 50 kHz sine wave
Signal-to-Noise + Distortion (SINAD)
2
61 dB min Differential mode
60 dB min Single-ended mode
Total Harmonic Distortion (THD)
2
−70 dB max
Peak Harmonic or Spurious Noise (SFDR)
2
−72 dB max
Intermodulation Distortion (IMD)
2
fa = 30 kHz, fb = 50 kHz
Second-Order Terms −86 dB typ
Third-Order Terms −90 dB typ
Channel-to-Channel Isolation −75 dB typ f
IN
= 50 kHz, f
NOISE
= 300 kHz
Aperture Delay
2
5 ns typ
Aperture Jitter
2
72 ps typ
Full Power Bandwidth
2
50 MHz typ @ 3 dB
10 MHz typ @ 0.1 dB
DC ACCURACY
Resolution 10 Bits
Integral Nonlinearity
2
±0.5 LSB max
Differential Nonlinearity
2
±0.5 LSB max Guaranteed no missed codes to 10 bits
Single-Ended and Pseudo Differential
Input
Straight binary output coding
Offset Error
2
±2 LSB max
Offset Error Match
2
±0.5 LSB max
Gain Error
2
±1.5 LSB max
Gain Error Match
2
±0.5 LSB max
Fully Differential Input Twos complement output coding
Positive Gain Error
2
±1.5 LSB max
Positive Gain Error Match
2
±0.5 LSB max
Zero-Code Error
2
±2 LSB max
Zero-Code Error Match
2
±0.5 LSB max
Negative Gain Error
2
±1.5 LSB max
Negative Gain Error Match
2
±0.5 LSB max
ANALOG INPUT
Single-Ended Input Range 0 to V
REF
V RANGE bit = 0
0 to 2 × V
REF
V RANGE bit = 1
Pseudo Differential Input Range
V
IN+
0 to V
REF
V RANGE bit = 0
0 to 2 × V
REF
V RANGE bit = 1
V
IN−
−0.3 to +0.7 V typ V
DD
= 3 V
−0.3 to +1.8 V typ V
DD
= 5 V
Fully Differential Input Range
3
V
IN+
and V
IN−
V
CM
± V
REF
/2 V V
CM
= V
REF
/2, RANGE bit = 0
V
IN+
and V
IN−
V
CM
± V
REF
V V
CM
= V
REF
, RANGE bit = 1
DC Leakage Current
4
±1 μA max
Input Capacitance 45 pF typ When in track
10 pF typ When in hold