Datasheet

AD7266
Rev. B | Page 3 of 28
SPECIFICATIONS
T
A
= T
MIN
to T
MAX
, V
DD
= 2.7 V to 3.6 V, f
SCLK
= 24 MHz, f
S
= 1.5 MSPS, V
DRIVE
= 2.7 V to 3.6 V; V
DD
= 4.75 V to 5.25 V,
f
SCLK
= 32 MHz, f
S
= 2 MSPS, V
DRIVE
= 2.7 V to 5.25 V; specifications apply using internal reference or external reference = 2.5 V ± 1%,
unless otherwise noted
1
.
Table 1.
Parameter Specification Unit Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-Noise Ratio (SNR)
2
71 dB min f
IN
= 50 kHz sine wave; differential mode
69 dB min
f
IN
= 50 kHz sine wave; single-ended and
pseudo differential modes
Signal-to-Noise + Distortion Ratio (SINAD)
2
70 dB min f
IN
= 50 kHz sine wave; differential mode
68 dB min
f
IN
= 50 kHz sine wave; single-ended and
pseudo differential modes
Total Harmonic Distortion (THD)
2
–77 dB max f
IN
= 50 kHz sine wave; differential mode
–73 dB max
f
IN
= 50 kHz sine wave; single-ended and
pseudo differential modes
Spurious-Free Dynamic Range (SFDR)
2
–75 dB max f
IN
= 50 kHz sine wave
Intermodulation Distortion (IMD)
2
fa = 30 kHz, fb = 50 kHz
Second-Order Terms –88 dB typ
Third-Order Terms –88 dB typ
Channel-to-Channel Isolation –88 dB typ
SAMPLE AND HOLD
Aperture Delay
3
11 ns max
Aperture Jitter
3
50 ps typ
Aperture Delay Matching
3
200 ps max
Full Power Bandwidth 33/26 MHz typ @ 3 dB, V
DD
= 5 V/V
DD
= 3 V
3.5/3 MHz typ @ 0.1 dB, V
DD
= 5 V/V
DD
= 3 V
DC ACCURACY
Resolution 12 Bits
Integral Nonlinearity
2
±1 LSB max ±0.5 LSB typ; differential mode
±1.5 LSB max
±0.5 LSB typ; single-ended and pseudo
differential modes
Differential Nonlinearity
2, 4
±0.99 LSB max Differential mode
−0.99/+1.5 LSB max Single-ended and pseudo differential modes
Straight Binary Output Coding
Offset Error ±7 LSB max ±2 LSB typ
Offset Error Match ±2 LSB typ
Gain Error ±2.5 LSB max
Gain Error Match ±0.5 LSB typ
Twos Complement Output Coding
Positive Gain Error ±2 LSB max
Positive Gain Error Match ±0.5 LSB typ
Zero Code Error ±5 LSB max
Zero Code Error Match ±1 LSB typ
Negative Gain Error ±2 LSB max
Negative Gain Error Match ±0.5 LSB typ
ANALOG INPUT
5
Single-Ended Input Range 0 V to V
REF
V RANGE pin low
0 V to 2 × V
REF
RANGE pin high
Pseudo Differential Input Range: V
IN+
− V
IN−
6
0 to V
REF
V RANGE pin low
2 × V
REF
V RANGE pin high
Fully Differential Input Range: V
IN+
and V
IN−
V
CM
± V
REF
/2 V V
CM
= common-mode voltage
7
= V
REF
/2
V
IN+
and V
IN−
V
CM
± V
REF
V V
CM
= V
REF