AD7765 Analog Devices, AD7765 Datasheet - Page 3

• Manufacturer Part Number: AD7765
• Description: 24-Bit, 156 kSPS, 112 dB Sigma-Delta ADC with On-Chip Buffers and Serial Interface
• Manufacturer: Analog Devices

Specifications of AD7765

• Resolution (bits): 24bit
• # Chan: 1
• Sample Rate: 40MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: 6.5 V p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

SPECIFICATIONS
AV
the on-chip amplifier with components as shown in the Optimal row in Table 7, unless otherwise noted.
Table 2.
Parameter
DYNAMIC PERFORMANCE
Decimate 256×
Decimate 128×
DD
Normal Power Mode
Low Power Mode
Normal Power Mode
Low Power Mode
1 = DV
Dynamic Range
Signal-to-Noise Ratio (SNR)
Spurious-Free Dynamic Range (SFDR)
Total Harmonic Distortion (THD)
Dynamic Range
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Dynamic Range
Signal-to-Noise Ratio (SNR)
Spurious-Free Dynamic Range (SFDR)
Total Harmonic Distortion (THD)
Intermodulation Distortion (IMD)
Dynamic Range
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Intermodulation Distortion (IMD)
DD
= 2.5 V, AV
DD
2 = AV
2
2
2
2
DD
3 = AV
DD
Test Conditions/Comments
MCLK = 40 MHz, ODR = 78.125 kHz, f
Modulator inputs shorted
Differential amplifier inputs shorted
Input amplitude = −0.5 dB
Nonharmonic
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −60 dB
MCLK = 40 MHz, ODR = 78.125 kHz, f
Modulator inputs shorted
Differential amplifier inputs shorted
Input amplitude = −0.5 dB
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −6 dB
Input amplitude = −60 dB
MCLK = 40 MHz, ODR = 156.25 kHz, f
Modulator inputs shorted
Differential amplifier inputs shorted
Nonharmonic
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −6 dB, f
Second-order terms
Third-order terms
MCLK = 40 MHz, ODR = 156.25 kHz, f
Modulator inputs shorted
Differential amplifier inputs shorted
Input amplitude = −0.5 dB
Input amplitude = −0.5 dB
Input amplitude = −6 dB
Input amplitude = −6 dB
Input amplitude = −6 dB, f
Second-order terms
Third-order terms
4 = 5 V, V
REF
+ = 4.096 V, MCLK amplitude = 5 V, T
Rev. A | Page 3 of 32
IN
IN
A = 50.3 kHz, f
A= 50.3 kHz, f
IN
IN
= 1 kHz sine wave
= 1 kHz sine wave
IN
IN
= 1 kHz sine wave
= 1 kHz sine wave
IN
IN
B = 47.3 kHz
B = 47.3 kHz
A
= +25°C, normal power mode, using
1
Specification
115
110
113.4
109
106
130
−105
−103
−71
113
110
112
109
106
−105
−111
−100
−76
112
108
110.4
107
105
130
−105
−103
−117
−108
110
109
109
107
105
−105
−111
−100
−134
−110
Unit
dB typ
dB min
dB typ
dB typ
dB min
dBFS typ
dB typ
dB typ
dB typ
dB typ
dB min
dB typ
dB typ
dB min
dB typ
dB typ
dB max
dB typ
dB typ
dB min
dB typ
dB typ
dB min
dBFS typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB min
dB typ
dB typ
dB min
dB typ
dB typ
dB max
dB typ
dB typ
AD7765