EVAL-AD7685SDZ Analog Devices, EVAL-AD7685SDZ Datasheet - Page 10

• Manufacturer Part Number: EVAL-AD7685SDZ
• Description: Data Conversion IC Development Tools Eval Board16-Bit 250 KSPS Serial MSOP
• Manufacturer: Analog Devices
• Type: ADCr
• Series: AD7685r

Specifications of EVAL-AD7685SDZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: AD7685
• Interface Type: SPI
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Factory Pack Quantity: 1

AD7685
TYPICAL PERFORMANCE CHARACTERISTICS
250000
200000
150000
100000
50000
–100
–120
–140
–160
–180
–0.5
–1.0
–1.5
–2.0
–20
–40
–60
–80
2.0
1.5
1.0
0.5
0
0
0
0
0
80E5 80E6 80E7 80E8 80E9
Figure 8. Histogram of a DC Input at the Code Center
0
20
Figure 7. Integral Nonlinearity vs. Code
0
16384
12
40
FREQUENCY (kHz)
Figure 9. FFT Plot
29041
CODE IN HEX
32768
CODE
204292
60
8192 POINT FFT
VDD = REF = 5V
f
f
SNR = 93.3dB
THD = –111.6dB
SFDR = –113.7dB
SECOND HARMONIC = –113.7dB
THIRD HARMONIC = –117.6dB
S
IN
= 250kSPS
= 20.45kHz
POSITIVE INL = +0.33LSB
NEGATIVE INL = –0.50LSB
27755
80EA 80EB 80EC 80ED
80
49152
20
VDD = REF = 5V
100
0
120
0
65536
Rev. C | Page 10 of 28
140000
120000
100000
80000
60000
40000
20000
–100
–120
–140
–160
–180
–0.5
–1.0
–1.5
–2.0
–20
–40
–60
–80
2.0
1.5
1.0
0.5
0
0
0
0
0
804E 804F 8050 8051 8052 8053 8054 8055 8056 8057
Figure 11. Histogram of a DC Input at the Code Center
0
Figure 10. Differential Nonlinearity vs. Code
20
2
16384
213
8667
40
Figure 12. FFT Plot
FREQUENCY (kHz)
60966
CODE IN HEX
32768
CODE
125055
16384 POINT FFT
VDD = REF = 2.5V
f
f
SNR = 88.8dB
THD = –103.5dB
SFDR = –104.5dB
SECOND HARMONIC = –112.4dB
THIRD HARMONIC = –105.4dB
60
S
IN
= 250kSPS
= 20.45kHz
POSITIVE DNL = +0.21LSB
NEGATIVE DNL = –0.30LSB
59082
80
6956
49152
VDD = REF = 2.5V
179
100
0
8058
120
65536
0