Datasheet

Parameter A Version
1
B Version
1
Units Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to Noise + Distortion Ratio
3
70 71 dB min Typically SNR Is 72 dB
(SNR) V
IN
= 10 kHz Sine Wave, f
SAMPLE
= 200 kHz (100 kHz)
Total Harmonic Distortion (THD) –78 –78 dB max V
IN
= 10 kHz Sine Wave, f
SAMPLE
= 200 kHz (100 kHz)
Peak Harmonic or Spurious Noise –78 –78 dB max V
IN
= 10 kHz Sine Wave, f
SAMPLE
= 200 kHz (100 kHz)
Intermodulation Distortion (IMD)
Second Order Terms –78 –80 dB typ fa = 9.983 kHz, fb = 10.05 kHz, f
SAMPLE
= 200 kHz (100 kHz)
Third Order Terms –78 –80 dB typ fa = 9.983 kHz, fb = 10.05 kHz, f
SAMPLE
= 200 kHz (100 kHz)
DC ACCURACY
Resolution 12 12 Bits
Integral Nonlinearity ±1 ±1 LSB max 2.5 V External Reference V
DD
= 3 V, V
DD
= 5 V (B Grade Only)
±1 ±0.5 LSB max 5 V External Reference V
DD
= 5 V
(±1) LSB max (L Version, 5 V External Reference, V
DD
= 5 V)
(±1) LSB max (L Version)
Differential Nonlinearity ±1 ±1 LSB max Guaranteed No Missed Codes to 12 Bits. 2.5 V External Reference
V
DD
= 3 V, 5 V External Reference V
DD
= 5 V
Total Unadjusted Error ±1 ±1 LSB typ
Unipolar Offset Error ±1 ±1 LSB max 2.5 V External Reference V
DD
= 3 V, 5 V External Reference V
DD
= 5 V
Unipolar Offset Error (±2.5) (±2.5) LSB max (L Versions, 2.5 V External Reference V
DD
= 3 V, 5 V External
Reference V
DD
= 5 V)
Positive Full-Scale Error ±2.5 ±2.5 LSB max 2.5 V External Reference V
DD
= 3 V, 5 V External Reference V
DD
= 5 V
Positive Full-Scale Error (±4) (±4) LSB max (L Versions, 2.5 V External Reference V
DD
= 3 V, 5 V External
Reference V
DD
= 5 V)
Negative Full-Scale Error ±2.5 ±2.5 LSB max 2.5 V External Reference V
DD
= 3 V, 5 V External Reference V
DD
= 5 V
Negative Full-Scale Error (±4) (±4) LSB max (L Versions, 2.5 V External Reference V
DD
= 3 V, 5 V External
Reference V
DD
= 5 V)
Bipolar Zero Error ±2 ±2 LSB max 2.5 V External Reference V
DD
= 3 V, 5 V External Reference V
DD
= 5 V
Bipolar Zero Error (±2.5) (±2.5) LSB max (L Versions, 2.5 V External Reference V
DD
= 3 V, 5 V External
Reference V
DD
= 5 V)
ANALOG INPUT
Input Voltage Ranges 0 to V
REF
0 to V
REF
Volts i.e., AIN(+) – AIN(–) = 0 to V
REF
, AIN(–) Can Be Biased
Up But AIN(+) Cannot Go Below AIN(–)
±V
REF
/2 ±V
REF
/2 Volts i.e., AIN(+) – AIN(–) = –V
REF
/2 to +V
REF
/2, AIN(–) Should
Be Biased to +V
REF
/2 and AIN(+) Can Go Below AIN(–) But
Cannot Go Below 0 V
Leakage Current ±1 ±1 µA max
Input Capacitance 20 20 pF typ
REFERENCE INPUT/OUTPUT
REF
IN
Input Voltage Range 2.3/V
DD
2.3/V
DD
V min/max Functional from 1.2 V
Input Impedance 150 150 kΩ typ
REF
OUT
Output Voltage 2.3/2.7 2.3/2.7 V min/max
REF
OUT
Tempco 20 20 ppm/°C typ
LOGIC INPUTS
Input High Voltage, V
INH
2.4 2.4 V min AV
DD
= DV
DD
= 4.5 V to 5.5 V
2.1 2.1 V min AV
DD
= DV
DD
= 3.0 V to 3.6 V
Input Low Voltage, V
INL
0.8 0.8 V max AV
DD
= DV
DD
= 4.5 V to 5.5 V
0.6 0.6 V max AV
DD
= DV
DD
= 3.0 V to 3.6 V
Input Current, I
IN
±10 ±10 µA max Typically 10 nA, V
IN
= 0 V or V
DD
Input Capacitance, C
IN
4
10 10 pF max
AD7853/AD7853L–SPECIFICATIONS
1, 2
REV. B
–2–
(AV
DD
= DV
DD
= +3.0 V to +5.5 V, REF
IN
/REF
OUT
= 2.5 V
External Reference, f
CLKIN
= 4 MHz (1.8 MHz B Grade (0ⴗC to +70ⴗC), 1 MHz A and B Grades (–40ⴗC to +85ⴗC) for L Version); f
SAMPLE
= 200 kHz
(AD7853) 100 kHz (AD7853L); SLEEP = Logic High; T
A
= T
MIN
to T
MAX
, unless otherwise noted.) Specifications in () apply to the AD7853L.