at TA ≈ 25°C, VOCM pin = open,
RF = 1 kΩ, RL = 1 kΩ, VOUT = 2 VPP,
50 Ω input match, G = 1 V/V, PD = VS+, single-ended
input, differential output, and input and output referenced to default midsupply for
ac-coupled tests (unless otherwise noted); see Figure 7-1 for a gain of 1 V/V test circuit
![Main Amplifier Differential Open-Loop Gain and Phase vs Frequency GUID-4A745D59-7A28-4D03-B54C-15265FA5F0B4-low.gif](/ods/images/SBOS831B/GUID-4A745D59-7A28-4D03-B54C-15265FA5F0B4-low.gif)
Simulated with a 1 kΩ differential load and
0.6 pF internal feedback capacitors removed |
Figure 6-37 Main Amplifier Differential Open-Loop Gain and Phase vs Frequency
Figure 6-39 Input Spot Noise vs Frequency![CMRR vs Frequency GUID-93D1428C-605F-4628-92EE-01D5085BB1D3-low.gif](/ods/images/SBOS831B/GUID-93D1428C-605F-4628-92EE-01D5085BB1D3-low.gif)
Common-mode input to differential output, simulated with G = 1 V/V |
Figure 6-41 CMRR vs Frequency
Figure 6-43 Common-Mode Voltage, Small- and Large-Signal Response (VOCM Pin
Driven)![Output Common-Mode Noise vs Frequency GUID-153917F8-87FA-4536-9706-CFF2D44C72C4-low.gif](/ods/images/SBOS831B/GUID-153917F8-87FA-4536-9706-CFF2D44C72C4-low.gif)
The
VOCM pin is either driven to mid-supply by low-impedance
source or allowed to float and default to
mid-supply |
Figure 6-45 Output Common-Mode Noise vs Frequency![–PSRR
vs VOCM Approaching VS– GUID-EF4807AA-0281-4EF2-97CC-555E07084D24-low.gif](/ods/images/SBOS831B/GUID-EF4807AA-0281-4EF2-97CC-555E07084D24-low.gif)
Simulated with single-ended to differential gain of 1,
PSRR for negative supply to differential output |
Figure 6-47 –PSRR
vs VOCM Approaching VS–![Input
Offset Voltage (VIO) GUID-282A28A2-D93A-40A5-8EE5-E57EC3291150-low.gif](/ods/images/SBOS831B/GUID-282A28A2-D93A-40A5-8EE5-E57EC3291150-low.gif)
Total of 561 PW units trimmed at a 5 V supply |
Figure 6-49 Input
Offset Voltage (VIO)![Input
Offset Voltage vs Temperature GUID-9904C726-70B2-4570-9749-CB92F7B34F09-low.gif](/ods/images/SBOS831B/GUID-9904C726-70B2-4570-9749-CB92F7B34F09-low.gif)
5 V
and 3 V delta from 25°C VIO, 52 PW
units |
Figure 6-51 Input
Offset Voltage vs Temperature![Input
Offset Voltage Drift Histogram GUID-89937E01-02F4-4194-AD84-56B95CAD8095-low.gif](/ods/images/SBOS831B/GUID-89937E01-02F4-4194-AD84-56B95CAD8095-low.gif)
–40°C to +125°C endpoint drift, total of 52 PW
units |
Figure 6-53 Input
Offset Voltage Drift Histogram![±Maximum VOUT vs Differential Load Resistance GUID-1C01B5F5-7EAE-475C-AB64-B5A0DF257D67-low.gif](/ods/images/SBOS831B/GUID-1C01B5F5-7EAE-475C-AB64-B5A0DF257D67-low.gif)
Maximum differential output swing, VOCM at
mid-supply |
Figure 6-55 ±Maximum VOUT vs Differential Load Resistance![Common-Mode Output Offset from VS+ / 2 Default Value
Histogram GUID-F892AB44-81DE-4CBD-B9D4-4653CF2F30C2-low.gif](/ods/images/SBOS831B/GUID-F892AB44-81DE-4CBD-B9D4-4653CF2F30C2-low.gif)
VOCM input floating, total of 240
units |
Figure 6-57 Common-Mode Output Offset from VS+ / 2 Default Value
Histogram
Figure 6-59 PD Turn-On Waveform![Closed-Loop Output Impedance vs Frequency GUID-55F5F5A2-7268-45AE-AA7A-D06EF1735099-low.gif](/ods/images/SBOS831B/GUID-55F5F5A2-7268-45AE-AA7A-D06EF1735099-low.gif)
Simulated closed-loop differential output impedance |
Figure 6-38 Closed-Loop Output Impedance vs Frequency![Output Balance vs Frequency GUID-E1874950-7BAF-49EE-83EA-CA050BA9E53A-low.gif](/ods/images/SBOS831B/GUID-E1874950-7BAF-49EE-83EA-CA050BA9E53A-low.gif)
Differential mode output to common-mode
output, simulated with G = 1 V/V Note: SSOB is equal to
a 20 mVPP output balance (OB). |
Figure 6-40 Output Balance vs Frequency![Power-Supply Rejection Ratio vs Frequency GUID-4B801519-7579-4F8D-AC73-BAD380A5BAFD-low.gif](/ods/images/SBOS831B/GUID-4B801519-7579-4F8D-AC73-BAD380A5BAFD-low.gif)
Single-ended to differential gain of 1, PSRR simulated to differential output |
Figure 6-42 Power-Supply Rejection Ratio vs Frequency
Figure 6-44 Common-Mode Voltage, Small- and Large-Step Response (VOCM Pin
Driven)![VOCM Offset vs VOCM Setting GUID-6AA06C87-A260-4A86-8D92-F3BBFB585743-low.gif](/ods/images/SBOS831B/GUID-6AA06C87-A260-4A86-8D92-F3BBFB585743-low.gif)
Average VOCM output offset of 39 units,
standard deviation < 2 mV |
Figure 6-46 VOCM Offset vs VOCM Setting![+PSRR
vs VOCM Approaching VS+ GUID-6DD9E0AD-033E-49EE-BDEF-602B9F233913-low.gif](/ods/images/SBOS831B/GUID-6DD9E0AD-033E-49EE-BDEF-602B9F233913-low.gif)
Simulated with single-ended to differential gain of 1,
PSRR for positive supply to differential output |
Figure 6-48 +PSRR
vs VOCM Approaching VS+![Input
Offset Current (IOS) GUID-5DEC0E9C-A39A-45CF-BD42-C199EA84D4FD-low.gif](/ods/images/SBOS831B/GUID-5DEC0E9C-A39A-45CF-BD42-C199EA84D4FD-low.gif)
Total of 561 PW units trimmed at a 5 V supply |
Figure 6-50 Input
Offset Current (IOS)![Input
Offset Current vs Temperature GUID-8B68F61D-A836-4901-9A0D-47B59764A396-low.gif](/ods/images/SBOS831B/GUID-8B68F61D-A836-4901-9A0D-47B59764A396-low.gif)
5 V
and 3 V delta from 25°C IOS, 52 PW
units |
Figure 6-52 Input
Offset Current vs Temperature![Input
Offset Current Drift Histogram GUID-929921D1-3831-4D1E-B219-6848D69F4C0E-low.gif](/ods/images/SBOS831B/GUID-929921D1-3831-4D1E-B219-6848D69F4C0E-low.gif)
–40°C to +125°C endpoint drift, total of 52 PW
units |
Figure 6-54 Input
Offset Current Drift Histogram
Figure 6-56 Supply Current vs PD Voltage![Common-Mode Output Offset from Driven VOCM Histogram GUID-43CEA6F2-771C-4542-8D0E-98C2CF2F18D3-low.gif](/ods/images/SBOS831B/GUID-43CEA6F2-771C-4542-8D0E-98C2CF2F18D3-low.gif)
VOCM input driven to mid-supply, total
of 240 units |
Figure 6-58 Common-Mode Output Offset from Driven VOCM Histogram
Figure 6-60 PD Turn-Off Waveform