AD7680
Rev. A | Page 3 of 24
SPECIFICATIONS
1
Table 2. V
DD
= 4.5 V to 5.5 V, f
SCLK
= 2.5 MHz, f
SAMPLE
= 100 kSPS, unless otherwise noted; T
A
= T
MIN
to T
MAX
, unless otherwise noted
Parameter A, B Versions
1
Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
IN
= 10 kHz sine wave
Signal-to-Noise + Distortion (SINAD)
2
83 dB min
85 dB typ
Signal-to-Noise Ratio (SNR)
2
84 dB min
86 dB typ
Total Harmonic Distortion (THD)
2
−97 dB typ
Peak Harmonic or Spurious Noise (SFDR)
2
−95 dB typ
Intermodulation Distortion (IMD)
2
Second-Order Terms −94 dB typ
Third-Order Terms −100 dB typ
Aperture Delay 20 ns max
Aperture Jitter 30 ps typ
Full Power Bandwidth 8 MHz typ @ −3 dB
2.2 MHz typ @ −0.1 dB
DC ACCURACY
No Missing Codes 15 Bits typ
Integral Nonlinearity
2
±4 LSB typ
Offset Error
2
±1.68 mV max
Gain Error
2
±0.038 % FS max
ANALOG INPUT
Input Voltage Ranges 0 to V
DD
V
DC Leakage Current ±0.3 μA max
Input Capacitance 30 pF typ
LOGIC INPUTS
Input High Voltage, V
INH
2.8 V min
Input Low Voltage, V
INL
0.4 V max
Input Current, I
IN
±0.3 μA max Typically 10 nA, V
IN
= 0 V or V
DD
Input Capacitance, C
IN
2, 3
10 pF max
LOGIC OUTPUTS
Output High Voltage, V
OH
V
DD
− 0.2 V min I
SOURCE
= 200 μA
Output Low Voltage, V
OL
0.4 V max I
SINK
= 200 μA
Floating-State Leakage Current ±0.3 μA max
Floating-State Output Capacitance
2, 3
10 pF max
Output Coding Straight (Natural) Binary
CONVERSION RATE
Conversion Time 8 μs max 20 SCLK cycles with SCLK at 2.5 MHz
9.6 μs max 24 SCLK cycles with SCLK at 2.5 MHz
Track-and-Hold Acquisition Time 1.5 μs max
400 ns max Sine wave input ≤ 10 kHz
Throughput Rate 100 kSPS See the Serial Interface section
POWER REQUIREMENTS
V
DD
4.5/5.5 V min/V max
I
DD
Digital I/P
S
= 0 V or V
DD
Normal Mode (Static) 5.2 mA max SCLK on or off. V
DD
= 5.5 V
Normal Mode (Operational) 4.8 mA max f
SAMPLE
= 100 kSPS. V
DD
= 5.5 V; 3.3 mA typ
Full Power-Down Mode 0.5 μA max SCLK on or off. V
DD
= 5.5 V
Power Dissipation
4
V
DD
= 5.5 V
Normal Mode (Operational) 26.4 mW max f
SAMPLE
= 100 kSPS
Full Power-Down 2.75 μW max
1
Temperature range as follows: B Version: −40°C to +85°C.
2
See the Terminology section.
3
Sample tested during initial release to ensure compliance.
4
See the Power vs. Throughput Rate section.
