Datasheet

Data Sheet AD7091R
Rev. 0 | Page 3 of 20
SPECIFICATIONS
V
DD
= 2.7 V to 5.25 V, V
DRIVE
= 1.65 V to 5.25 V, V
REF
= 2.5 V internal reference, f
SAMPLE
= 1 MSPS, f
SCLK
= 50 MHz, T
A
= −40°C to +125°C,
unless otherwise noted.
Table 1.
Parameter Test Conditions/Comments Min Typ Max Unit
DYNAMIC PERFORMANCE
1
f
IN
= 10 kHz sine wave
Signal-to-Noise Ratio (SNR)
2
66.5 69 dB
f
SAMPLE
= 500 kSPS 67.5 70 dB
Signal-to-Noise-and-Distortion Ratio (SINAD)
2
66 69 dB
Total Harmonic Distortion (THD)
2
−84 −79 dB
Spurious Free Dynamic Range (SFDR)
2
−85
−78
dB
Aperture Delay
2
5 ns
Aperture Jitter
2
40 ps
Full Power Bandwidth
2
At −3 dB 7.5 MHz
At −0.1 dB 1.2 MHz
DC ACCURACY
Resolution 12 Bits
Integral Nonlinearity (INL)
2, 3
V
DRIVE
≤ 3.3 V ±0.8 ±1 LSB
V
DRIVE
> 3.3 V with external V
REF
±1
LSB
Differential Nonlinearity (DNL)
2
Guaranteed no missing codes to 12 bits ±0.3 ±0.9 LSB
Offset Error
2
±0.6 ±2 LSB
Gain Error
2
±0.8 ±3 LSB
Total Unadjusted Error (TUE)
2
−2 LSB
ANALOG INPUT
Input Voltage Range 0 V
REF
V
DC Leakage Current ±1 µA
Input Capacitance
4
During acquisition phase 7 pF
Outside acquisition phase 1 pF
VOLTAGE REFERENCE INPUT/OUTPUT
REF
OUT
2.485 2.5 2.525 V
REF
IN
2.7 V
DD
V
Drift ±4.5 ±25 ppm/°C
LOGIC INPUTS
Input High Voltage (V
INH
) 0.7 × V
DRIVE
V
Input Low Voltage (V
INL
) 0.3 × V
DRIVE
V
Input Current (I
IN
) Typically 10 nA, V
IN
= 0 V or V
DRIVE
±1 µA
Input Capacitance (C
IN
)
4
5 pF
LOGIC OUTPUTS
Output High Voltage (V
OH
) I
SOURCE
= 200 µA V
DRIVE
− 0.2 V
Output Low Voltage (V
OL
)
I
SINK
= 200 µA
0.4
V
Floating State Leakage Current ±1 µA
Floating State Output Capacitance
4
5 pF
Output Coding Straight binary
CONVERSION RATE
Conversion Time 650 ns
Track-and-Hold Acquisition Time
2, 4
Full-scale step input 350 ns
Throughput Rate 1 MSPS