Datasheet
5
1605fc
LTC1605
ELECTRICAL CHARACTERISTICS
Note 8: Bipolar offset is the offset voltage measured from –0.5 LSB when
the output code flickers between 0000 0000 0000 0000 and 1111 1111
1111 1111.
Note 9: Guaranteed by design, not subject to test.
Note 10: Recommended operating conditions.
Note 11: With CS low the falling R/C edge starts a conversion. If R/C
returns high at a critical point during the conversion it can create small
errors. For best results ensure that R/C returns high within 3µs after the
start of the conversion.
Note 12: As measured with fixed resistors shown in Figure 4. Adjustable to
zero with external potentiometer.
Note 13: Full-scale error is the worst-case of –FS or +FS untrimmed
deviation from ideal first and last code transitions, divided by the transition
voltage (not divided by the full-scale range) and includes the effect of
offset error.
Note 14: All specifications in dB are referred to a full-scale ±10V input.
Note 15: Full-power bandwidth is defined as full-scale input frequency at
which a signal-to-(noise + distortion) degrades to 60dB or 10 bits of
accuracy.
Note 16: Recovers to specified performance after (2 • FS) input
overvoltage.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Supply Current vs Supply Voltage
Change in CAP Voltage vs
Load Current
SUPPLY VOLTAGE (V)
4.50
9.5
SUPPLY CURRENT (mA)
10.0
10.5
11.0
11.5
12.0
12.5
4.75 5.00 5.25 5.50
1605 • TPC01
f
SAMPLE
= 100kHz
LOAD CURRENT (mA)
–25
CHANGE IN CAP VOLTAGE (mV)
10
30
50
15
1605 TPC03
–10
–30
0
20
40
–20
–40
–50
–15
–5
5
25
TEMPERATURE (°C)
–50
10.0
POSITIVE SUPPLY CURRENT (mA)
10.5
11.0
11.5
12.0
–25 0 25 50
1605 • TPC02
75 100
f
SAMPLE
= 100kHz
Supply Current vs Temperature
Typical INL Curve
CODE
0
INL (LSBs)
65535
1605 • TPC04
16384
32768
49152
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
CODE
0
DNL (LSBs)
65535
1605 • TPC05
16384
32768
49152
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
Power Supply Feedthrough vs
Ripple FrequencyTypical DNL Curve
RIPPLE FREQUENCY (Hz)
–70
–60
–50
–40
–30
–20
POWER SUPPLY FEEDTHROUGH (dB)
1M
1605 • TPC06
1 10010 1k 100k10k