AS1507 datasheet(5/17 Pages) AMSCO

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AS1507

Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s

Timing Characteristics

VDD = +2.7 to +5.5V, HIGH = VDD, LOW = GND, TAMB = -40 to +85ºC. Typ values are at VDD = +5.0V, TAMB = +25ºC

(unless otherwise specified). See Figure 20 on page 9. Digital timing data is guaranteed by design and characteriza-

tion, and is not production tested.

Dynamic Characteristics

Wiper -3dB Bandwidth

AS1507-10

1200

kHz

AS1507-50

220

AS1507-100

120

Wiper Settling Time

AS1507-10

1100

AS1507-50

1600

AS1507-100

2200

Non-Volatile Memory Reliability

Data Retention

TAMB = +85ºC

150

Years

Endurance

TAMB = +25ºC

10M

Write

Cycles

TAMB = +85ºC

tBUSY

Write Non-Volatile Register

Busy Time

1. The programming current operates only during power-up and non-volatile memory writes.

2. DNL and INL are measured with the potentiometer configured as a voltage-divider with HIGH = VDD and LOW =

GND. The wiper terminal is unloaded and measured with a high-input-impedance voltmeter.

3. DNL and INL are measured with the potentiometer configured as a variable resistor. HIGH is unconnected and

LOW = GND. For the 5V condition, the wiper terminal is driven with a source current of 400µA @ 10k

Ω, 80µA @

50k

Ω, 40µA @ 100kΩ. In 3V conditions, the wiper terminal is driven with a source current of 200µA @ 10kΩ,

40µA @ 50k

Ω, 20µA @ 100kΩ.

4. The wiper resistance is measured using the source currents given in Note 3. The number is the worst case

resistance over TAP positions.

5. The device draws higher supply current when the digital inputs are driven with voltages between (VDD - 0.5V)

and (GND + 0.5V).

6. Wiper at midscale with a 10pF load (DC measurement) VDD = 5V, LOW = GND. An AC source (5V peak to peak

sinus signal) is applied to HIGH and the WIPER output is measured. A 3dB bandwidth occurs when the AC

WIPER/HIGH value is 3dB lower than the DC WIPER/HIGH value.

7. Wiper-settling time is the worst-case 0 to 50% rise-time measured between successive wiper positions. HIGH =

VDD, LOW = GND; WIPER is unloaded and measured with a 10pF load.

8. This parameter is not tested but ensured by characterization.

Table 5. Timing Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Unit

fSCLK

SCLK Frequency

MHz

tCP

SCLK Clock Period

200

tCH

SCLK Pulse-Width High

tCL80

SCLK Pulse-Width Low

tCSS

CSN-Fall to SCLK Rise Setup

tCSH

SCLK-Rise to CSN-Rise Hold

tDS

SDIO to SCLK Setup

tDH

SDIO Hold after SCLK

tCS0

SCLK-Rise to CSN-Fall Delay

tCS1

CSN-Rise to SCLK-Rise Hold

tCSW

CSN Pulse-Width High

200

tBUSY

Write Non-Volatile Register Busy Time

Table 4. Electrical Characteristics (Continued)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

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