MAX11359A Datasheet, PDF (11/66 Pages) Maxim Integrated Products – 16-Bit Data-Acquisition System with ADC, DAC, UPIOs, RTC, Voltage Monitors, and Temp Sensor

16-Bit Data-Acquisition System with ADC, DAC,
UPIOs, RTC, Voltage Monitors, and Temp Sensor
Table 1. Output Noise (Notes 12, 13, and 14)
RATE (sps)
10
40
50
60
200
240
400
512
GAIN = 1
1.684
3.178
3.234
3.307
55.336
104.596
587.138
983.979
OUTPUT NOISE (µV_RMS)
GAIN = 2
GAIN = 4
1.684
1.684
3.178
3.178
3.234
3.234
3.307
3.307
55.336
55.336
104.596
104.596
587.138
587.138
983.979
983.979
GAIN = 8
1.684
3.178
3.234
3.307
55.336
104.596
587.138
983.979
Note 12: V_REF = ±1.25V, bipolar mode, V_IN = 1.24912V, PGA gain = 1, T_A = +85°C.
Note 13: C_IN = 5pF, op-amp noise is considered to be the same as the switching noise. The increase of the op amp’s noise contri-
bution is due to a large input swing (0 to 3.6V).
Note 14: Assume ±3 sigma peak-to-peak variation; noise-free resolution means no code flicker at given bits’ LSB.
Table 2. Peak-to-Peak Resolution
RATE (sps)
10
40
50
60
200
240
400
512
GAIN = 1
17.49
16.57
16.55
16.51
12.45
11.53
9.04
8.30
PEAK-TO-PEAK RESOLUTION (BITS)
GAIN = 2
GAIN = 4
17.49
17.49
16.57
16.57
16.55
16.55
16.51
16.51
12.45
12.45
11.53
11.53
9.04
9.04
8.30
8.30
GAIN = 8
17.49
16.57
16.55
16.51
12.45
11.53
9.04
8.30
Table 3. Maximum External Source Impedance Without 16-Bit Gain Error
PARAMETER
0 (Note 15)
EXTERNAL CAPACITANCE (pF)
50
100
500
1000
Resistance (kΩ)
350
60
30
10
4
Note 15: 2pF parasitic capacitance is assumed, which represents pad and any other parasitic capacitance.
5000
1
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