AVDD1 = 5V, AVDD2 = 1.8V, AVSS = 0V, IOVDD = 1.8V,
VREF = 4.096V, high-reference range, high-speed mode, wideband
filter, OSR = 32, 1x input range, input precharge buffers on, reference precharge
buffer off, and TA = 25°C (unless otherwise noted)
Figure 5-7 Max-Speed Mode, Shorted-Input FFT![ADS127L21 Max-Speed Mode, Shorted-Input FFT GUID-20230526-SS0I-PXK1-DDK9-BCXFN8TVBHBX-low.svg](/ods/images/SBASAK4B/GUID-20230526-SS0I-PXK1-DDK9-BCXFN8TVBHBX-low.svg)
VREF = 2.5V, wideband filter,
2x range |
Figure 5-9 Max-Speed Mode, Shorted-Input FFT
Figure 5-11 Max-Speed Mode, Shorted-Input FFT
Figure 5-13 High-Speed Mode, Shorted-Input FFT![ADS127L21 High-Speed Mode, Shorted-Input FFT GUID-20230526-SS0I-TDR1-N2F8-WRNJKVJ6LS90-low.svg](/ods/images/SBASAK4B/GUID-20230526-SS0I-TDR1-N2F8-WRNJKVJ6LS90-low.svg)
VREF = 2.5V, wideband filter,
2x range |
Figure 5-15 High-Speed Mode, Shorted-Input FFT
Figure 5-17 High-Speed Mode, Shorted-Input FFT
Figure 5-19 Mid-Speed Mode, Shorted-Input FFT![ADS127L21 Mid-Speed Mode, Shorted-Input FFT GUID-20230526-SS0I-PX18-HWGF-JG70R6R32XMD-low.svg](/ods/images/SBASAK4B/GUID-20230526-SS0I-PX18-HWGF-JG70R6R32XMD-low.svg)
VREF = 2.5V, wideband filter,
2x range |
Figure 5-21 Mid-Speed Mode, Shorted-Input FFT
Figure 5-23 Mid-Speed Mode, Shorted-Input FFT
Figure 5-25 Low-Speed Mode, Shorted-Input FFT![ADS127L21 Low-Speed Mode, Shorted-Input FFT GUID-20230526-SS0I-5JHB-FT2Z-M5QNNDCBKVBZ-low.svg](/ods/images/SBASAK4B/GUID-20230526-SS0I-5JHB-FT2Z-M5QNNDCBKVBZ-low.svg)
VREF = 2.5V, wideband filter,
2x range |
Figure 5-27 Low-Speed Mode, Shorted-Input FFT
Figure 5-29 Low-Speed Mode, Shorted-Input FFT
Figure 5-31 Max-Speed Mode Code Distributions
Figure 5-33 Mid-Speed Mode Code Distributions![ADS127L21 Noise
Performance Distributions GUID-20230526-SS0I-VKNR-KNWJ-P0T3BKLZLLRV-low.svg](/ods/images/SBASAK4B/GUID-20230526-SS0I-VKNR-KNWJ-P0T3BKLZLLRV-low.svg)
Wideband filter, OSR = 64, 30
units |
Figure 5-35 Noise
Performance Distributions
Figure 5-37 Noise
Performance vs Reference Voltage
Figure 5-39 Noise
Performance vs Temperature
Figure 5-41 Input
Current vs Differential Voltage
Figure 5-43 Input
Current vs Differential Voltage![ADS127L21 Input
Current vs Temperature GUID-20230615-SS0I-4QMH-PR8K-4FDCLLL1NXLX-low.svg](/ods/images/SBASAK4B/GUID-20230615-SS0I-4QMH-PR8K-4FDCLLL1NXLX-low.svg)
Precharge buffers off, VIN =
full scale, VREF = 2.5V |
Figure 5-45 Input
Current vs Temperature![ADS127L21 Input
Current vs Temperature GUID-20230615-SS0I-HR0D-NGLZ-BZH3Q93QL7VH-low.svg](/ods/images/SBASAK4B/GUID-20230615-SS0I-HR0D-NGLZ-BZH3Q93QL7VH-low.svg)
Precharge buffers on, VIN =
full scale, VREF = 2.5V |
Figure 5-47 Input
Current vs Temperature
Figure 5-49 Offset Error Distribution![ADS127L21 Long-Term Offset Drift GUID-20220711-SS0I-DFXN-BRDL-RKWBBRHNMF8L-low.svg](/ods/images/SBASAK4B/GUID-20220711-SS0I-DFXN-BRDL-RKWBBRHNMF8L-low.svg)
30 units, offset calibrated at t =
0 |
Figure 5-51 Long-Term Offset Drift
Figure 5-53 Gain
Error Distribution![ADS127L21 Gain
Drift Distribution GUID-20230616-SS0I-BMXV-1PMP-SWRSVKF8ZGW4-low.svg](/ods/images/SBASAK4B/GUID-20230616-SS0I-BMXV-1PMP-SWRSVKF8ZGW4-low.svg)
Precharge buffers off, 30 units |
Figure 5-55 Gain
Drift Distribution![ADS127L21 Long-Term Gain Drift GUID-20220711-SS0I-3CPX-6BWW-5TFNCQ0DBRGX-low.svg](/ods/images/SBASAK4B/GUID-20220711-SS0I-3CPX-6BWW-5TFNCQ0DBRGX-low.svg)
30 units, gain calibrated at t =
0 |
Figure 5-57 Long-Term Gain Drift
Figure 5-59 THD
Distribution
Figure 5-61 THD
vs Input Amplitude
Figure 5-63 INL
Error vs Input Voltage
Figure 5-65 INL
Error vs Input Voltage
Figure 5-67 INL
Distributions
Figure 5-69 DC
CMRR Distribution
Figure 5-71 CMRR
vs Frequency
Figure 5-73 Oscillator Frequency Distribution
Figure 5-75 VCM
Voltage Distribution![ADS127L21 REFP
Input Current vs Reference Voltage GUID-D1EDBBF3-109C-45CD-AE7B-09F079E3E030-low.svg](/ods/images/SBASAK4B/GUID-D1EDBBF3-109C-45CD-AE7B-09F079E3E030-low.svg)
REFP precharge buffer off |
Figure 5-77 REFP
Input Current vs Reference Voltage
Figure 5-79 DC
PSRR Distribution
Figure 5-81 PSRR
vs Power-Supply Frequency
Figure 5-83 Power-Supply Current vs Temperature
Figure 5-85 Power-Supply Current vs Temperature
Figure 5-87 IOVDD
Current vs Oversampling Ratio
Figure 5-8 Max-Speed Mode, Shorted-Input FFT
Figure 5-10 Max-Speed Mode, Shorted-Input FFT![ADS127L21 Max-Speed Mode, Full-Scale FFT GUID-20240318-SS0I-VBXP-FGJV-FSVGTLWLBNRV-low.svg](/ods/images/SBASAK4B/GUID-20240318-SS0I-VBXP-FGJV-FSVGTLWLBNRV-low.svg)
VIN = –0.2dBFS, 1kHz,
wideband filter |
Figure 5-12 Max-Speed Mode, Full-Scale FFT
Figure 5-14 High-Speed Mode, Shorted-Input FFT
Figure 5-16 High-Speed Mode, Shorted-Input FFT![ADS127L21 High-Speed Mode, Full-Scale FFT GUID-20240318-SS0I-LVQF-MVHR-NDMX8LDXZTJG-low.svg](/ods/images/SBASAK4B/GUID-20240318-SS0I-LVQF-MVHR-NDMX8LDXZTJG-low.svg)
VIN = –0.2dBFS, 1kHz,
wideband filter |
Figure 5-18 High-Speed Mode, Full-Scale FFT
Figure 5-20 Mid-Speed Mode, Shorted-Input FFT
Figure 5-22 Mid-Speed Mode, Shorted-Input FFT![ADS127L21 Mid-Speed Mode, Full-Scale FFT GUID-20240318-SS0I-ZCMZ-MQPK-SRJSVMJVWNZ4-low.svg](/ods/images/SBASAK4B/GUID-20240318-SS0I-ZCMZ-MQPK-SRJSVMJVWNZ4-low.svg)
VIN = –0.2dBFS, 1kHz,
wideband filter |
Figure 5-24 Mid-Speed Mode, Full-Scale FFT
Figure 5-26 Low-Speed Mode, Shorted-Input FFT
Figure 5-28 Low-Speed Mode, Shorted-Input FFT![ADS127L21 Low-Speed Mode, Full-Scale FFT GUID-20240318-SS0I-K3ZV-CMFQ-SX80N96QCHJ2-low.svg](/ods/images/SBASAK4B/GUID-20240318-SS0I-K3ZV-CMFQ-SX80N96QCHJ2-low.svg)
VIN = –0.2dBFS, 1kHz,
wideband filter |
Figure 5-30 Low-Speed Mode, Full-Scale FFT
Figure 5-32 High-Speed Mode Code Distributions
Figure 5-34 Low-Speed Mode Code Distributions![ADS127L21 Noise
Performance Distributions GUID-20230526-SS0I-T3ZW-0WDJ-6K76X92SHXX4-low.svg](/ods/images/SBASAK4B/GUID-20230526-SS0I-T3ZW-0WDJ-6K76X92SHXX4-low.svg)
Sinc4 filter, OSR = 64, 30 units |
Figure 5-36 Noise
Performance Distributions![ADS127L21 Noise
Performance vs Temperature GUID-20230526-SS0I-TJFP-HZ3Q-GMMH1GR797ZK-low.svg](/ods/images/SBASAK4B/GUID-20230526-SS0I-TJFP-HZ3Q-GMMH1GR797ZK-low.svg)
Wideband filter, OSR = 64 |
Figure 5-38 Noise
Performance vs Temperature![ADS127L21 Dynamic Range Distributions GUID-20230622-SS0I-VQ40-XZXN-8MTNPNRSSVQT-low.svg](/ods/images/SBASAK4B/GUID-20230622-SS0I-VQ40-XZXN-8MTNPNRSSVQT-low.svg)
Wideband filter, OSR = 64, 30
units |
Figure 5-40 Dynamic Range Distributions
Figure 5-42 Input
Current vs Differential Voltage
Figure 5-44 Input
Current vs Differential Voltage![ADS127L21 Input
Current vs Temperature GUID-20230615-SS0I-RVL8-R574-BPTPB5SPRCJ4-low.svg](/ods/images/SBASAK4B/GUID-20230615-SS0I-RVL8-R574-BPTPB5SPRCJ4-low.svg)
Precharge buffers off, VIN =
full scale, VREF = 2.5V |
Figure 5-46 Input
Current vs Temperature![ADS127L21 Input
Current vs Temperature GUID-20230615-SS0I-1M9N-KHSS-1TLCDN6F73NP-low.svg](/ods/images/SBASAK4B/GUID-20230615-SS0I-1M9N-KHSS-1TLCDN6F73NP-low.svg)
Precharge buffers on, VIN =
full scale, VREF = 2.5V |
Figure 5-48 Input
Current vs Temperature
Figure 5-50 Offset Error vs Temperature
Figure 5-52 Gain
Error Distribution![ADS127L21 Gain
Drift Distribution GUID-20230616-SS0I-HC2Z-TMWH-4G6LKGXBX21Z-low.svg](/ods/images/SBASAK4B/GUID-20230616-SS0I-HC2Z-TMWH-4G6LKGXBX21Z-low.svg)
Precharge buffers on, 30 units |
Figure 5-54 Gain
Drift Distribution![ADS127L21 Gain
Error vs Clock Frequency GUID-B6420254-DA6A-4B49-8331-70F2022866CC-low.svg](/ods/images/SBASAK4B/GUID-B6420254-DA6A-4B49-8331-70F2022866CC-low.svg)
Gain error calibrated at nominal clock
frequency |
Figure 5-56 Gain
Error vs Clock Frequency
Figure 5-58 THD
Distribution
Figure 5-60 THD
Overtemperature Distributions![ADS127L21 Intermodulation Distortion FFT GUID-20230525-SS0I-QMZW-BK9N-ZZQFGR1NNFQC-low.svg](/ods/images/SBASAK4B/GUID-20230525-SS0I-QMZW-BK9N-ZZQFGR1NNFQC-low.svg)
f1 = 9.7kHz, f2 =
10.3kHz, VIN = −6.5dBFS |
Figure 5-62 Intermodulation Distortion FFT
Figure 5-64 INL
Error vs Input Voltage
Figure 5-66 INL
Error vs Input Voltage
Figure 5-68 INL
Over-Temperature Distributions
Figure 5-70 DC
CMRR vs Temperature
Figure 5-72 CMRR
vs Frequency
Figure 5-74 Oscillator Frequency vs Temperature
Figure 5-76 VCM
Voltage vs Temperature
Figure 5-78 REFP
Input Current vs Reference Voltage
Figure 5-80 DC
PSRR vs Temperature
Figure 5-82 Power-Supply Current vs Temperature
Figure 5-84 Power-Supply Current vs Temperature
Figure 5-86 IOVDD
Current vs Oversampling Ratio
Figure 5-88 Power-Down Mode Supply Current vs Temperature