AD7265 Analog Devices, AD7265 Datasheet - Page 3

• Manufacturer Part Number: AD7265
• Description: Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7265

• Resolution (bits): 12bit
• # Chan: 12
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: Uni (Vref),Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

SPECIFICATIONS
T
reference or external reference = 2.5 V ± 1%, unless otherwise noted.
Table 1.
Parameter
DYNAMIC PERFORMANCE
SAMPLE AND HOLD
DC ACCURACY
ANALOG INPUT
A
Signal-to-Noise Ratio (SNR)
Signal-to-Noise + Distortion Ratio (SINAD)
Total Harmonic Distortion (THD)
Spurious-Free Dynamic Range (SFDR)
Intermodulation Distortion (IMD)
Channel-to-Channel Isolation
Aperture Delay
Aperture Jitter
Aperture Delay Matching
Full Power Bandwidth
Resolution
Integral Nonlinearity
Differential Nonlinearity
Straight Binary Output Coding
Twos Complement Output Coding
Single-Ended Input Range
Pseudo Differential Input Range: V
Fully Differential Input Range: V
= T
Second-Order Terms
Third-Order Terms
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Positive Gain Error
Positive Gain Error Match
Zero Code Error
Zero Code Error Match
Negative Gain Error
Negative Gain Error Match
MIN
to T
MAX
T
5
3
, V
3
DD
2
= 2.7 V to 5.25 V, f
2, 4
3
2
V
IN+
IN+
2
2
IN+
and V
and V
− V
2
IN−
SCLK
IN−
IN−
2
6
= 16 MHz, f
Specification
71
69
70
68
–77
–73
–75
–88
–88
–88
11
50
200
3.5/3
12
±1
±1.5
±0.99
−0.99/+1.5
±6
±2
±2.5
±0.5
±2
±0.5
±5
±1
±2
±0.5
0 V to V
0 V to 2 × V
0 to V
2 × V
V
V
33/26
CM
CM
± V
± V
REF
REF
REF
REF
REF
S
/2
= 1 MSPS, V
REF
Rev. A | Page 3 of 28
1
Unit
dB min
dB min
dB min
dB min
dB max
dB max
dB max
dB typ
dB typ
dB typ
ns max
ps typ
ps max
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
V
V
V
V
V
DRIVE
= 2.7 V to 5.25 V; specifications apply using internal
Test Conditions/Comments
f
f
pseudo differential modes
f
f
pseudo differential modes
f
f
pseudo differential modes
f
fa = 30 kHz, fb = 50 kHz
@ 0.1 dB, V
±0.5 LSB typ; differential mode
±0.5 LSB typ; single-ended and pseudo
differential modes
Differential mode
Single-ended and pseudo differential modes
RANGE pin low
RANGE pin high
RANGE pin low
RANGE pin high
V
V
@ 3 dB, V
IN
IN
IN
IN
IN
IN
IN
CM
CM
= 50 kHz sine wave; differential mode
= 50 kHz sine wave; single-ended and
= 50 kHz sine wave; differential mode
= 50 kHz sine wave; single-ended and
= 50 kHz sine wave; differential mode
= 50 kHz sine wave; single-ended and
= 50 kHz sine wave
= common-mode voltage
= V
REF
DD
DD
= 5 V/V
= 5 V/V
DD
DD
= 3 V
= 3 V
7
= V
REF
/2
AD7265